Datasets:

cwinkler

/

patents_green_plastics

like 1

a system and method for the contained aerobic treatment of biodegradable matter , especially for box composting of organic wastes , is described . the system comprises a cover is a laminate of a porous polymeric layer adhered to a woven or knit or nonwoven fabric , in which the laminate has a specific air permeability and resistance to water vapor transmission .

a stackable , portable air filtration unit utilizing a molded plastic central housing , injection - molded plastic inlet and outlet covers and accommodating a high - efficiency particulate air filter or other high efficiency particulate filter , a secondary filter and a pre - filter . the unit is versatile and flexible in that different motorized impellers can be used alternatively , depending on the desired specifications .

a thermally decomposable polymer composition comprising a polyester of a dicarboxylic acid and a difunctional tertiary alcohol are disclosed , which are useful in the forming of microelectronic assemblies . a representative example of a composition comprises a thermally decomposable polyester of the formula : wherein m is at least about 100 .

a multi - layered pipe of arbitrary length and cross - section is produced by co - extrusion of a segmented thermoplastic copolyester elastomer outer body over the exterior surface of an annular tubular core of cpvc / pvc having a wall thickness , measured in the radial direction , in the range from about 0 . 95 mm to about 1 . 375 mm . the cope is cohesively bonded to the annular core coextensively with essentially the entire length of the pipe . though the cope is easily degraded in contact with water , and cpvc and blends of cpvc with less than 25 % by weight of pvc are typically rigid when extruded as pipe , a laminated pipe of cope and cpvc / pvc with the specified wall thickness and overall dimensions which in the laminated pipe satisfy an applicable plumbing code has essentially the same performance characteristics as commercially available cpvc pipe which is a monolayer and not a laminate .

the instant invention involves the use of a combination of preparatory steps in conjunction with mass spectroscopy and time - of - flight detection procedures to maximize the diversity of biopolymers which are verifiable within a particular sample . the cohort of biopolymers verified within such a sample is then viewed with reference to their ability to evidence at least one particular disease state ; thereby enabling a diagnostician to gain the ability to characterize either the presence or absence of said at least one disease state relative to recognition of the presence and / or the absence of said biopolymer .

the instant invention involves the use of a combination of preparatory steps in conjunction with mass spectroscopy and time - of - flight detection procedures to maximize the diversity of biopolymers which are verifiable within a particular sample . the cohort of biopolymers verified within such a sample is then viewed with reference to their ability to evidence at least one particular disease state ; thereby enabling a diagnostician to gain the ability to characterize either the presence or absence of said at least one disease state relative to recognition of the presence and / or the absence of said biopolymer .

a method for applying a barrier to a structure to prevent the infiltration of pest species includes providing a composition and associating the coating composition with the structure . the composition is formed from a polymer component having dispersed therein beads formed from colloidal clay and adsorbed pest control agent . colloidal clays adsorb more pest control agent that do standard clays and releases the adsorbed pest control agent at a slower rate than do standard clays .

methods for fabricating dense arrays of polymeric molecules in a highly multiplexed manner are provided using semiconductor - processing - derived lithographic methods . advantageously , the methods are adaptable to the synthesis of a variety of polymeric compounds . for example , arrays of peptides and polymers joined by peptide bonds may be fabricated in a highly multiplexed manner .

compositions and methods for destroying chemical and biological agents such as toxins and bacteria are provided wherein the substance to be destroyed is contacted with finely divided metal oxide nanoparticles . the metal oxide nanoparticles are coated with a material selected from the group consisting of surfactants , waxes , oils , silyls , synthetic and natural polymers , resins , and mixtures thereof . the coatings are selected for their tendency to exclude water while not excluding the target compound or adsorbates . the desired metal oxide nanoparticles can be pressed into pellets for use when a powder is not feasible . preferred metal oxides for the methods include mgo , sro , bao , cao , tio 2 , zro 2 , feo , v 2 o 3 , v 2 o 5 , mn 2 o 3 , fe 2 o 3 , nio , cuo , al 2 o 3 , sio 2 , zno , ag 2 o , the corresponding hydroxides of the foregoing , and mixtures thereof .

the present invention relates to a functionalized semi - permeable membrane composed of a porous biocompatible support pretreated so as to increase the surface energy thereof and characterized in that it includes at least two layers , each having a hydrophilic polymer and at least one biological active molecule , and to the use thereof in particular for producing a bioartificial organ .

a moisturizing mat , and process for making it , are disclosed . the moisturizing mat is suitable for use as a base to promote trickle watering of plants in greenhouses . the mat comprises a wood pulp / fabric layer having an impervious plastic film backing layer . the moisturizing mat is produced by a process including the steps of depositing wood pulp on a first fibrous layer , placing a second fibrous layer on top of the wood pulp , bonding the product of step , and bonding an impervious plastic film to one face of the product of step .

a release device , and in particular a release device for use in parachute systems in place of pyrotechnic cutters . the inventive systems utilize a severable structural member of low melting point , high strength polymer that is severed by introducing a heat defect . the member is typically a ultra high molecular weight polyethylene braided line and the heat defect is preferably caused a resistance heater or solid state laser diode . this inventive results in a low cost non - pyrotechnic release device with is not subject to regulatory and transportation restrictions .

a granulating device for plastic compounds in which cutting knives of a cutting device face the die plate of a granulating head to form granules of plastic strings extruded from the die plate . the cutting knives are supported on a cutting shaft driven in rotation by a drive shaft of a drive motor . the cutting shaft is rotatably supported in fixed axial position in a housing . in order to obtain a planar parallel and central positioning of the cutting knives relative to the die plate , for example , due to thermal displacement , the housing and drive unit are guided together in a displaceable manner on guide shafts having first ends fixed to the granulating head and opposite ends which are vertically supported for universal pivotable movement in the manner of propped cantilever beams .

the invention provides uncharged water - soluble silica - adsorbing polymers for suppressing electroendoosmotic flow and to reduce analyte - wall interactions in capillary electrophoresis . in one aspect of the invention , one or more of such polymers are employed as components of a separation medium for the separation of biomolecules , such as polynucleotides , polysaccharides , proteins , and the like , by capillary electrophoresis . generally , such polymers are characterized by water solubility over the temperature range between about 20 ° c . to about 50 ° c ., concentration in a separation medium in the range between about 0 . 001 % to about 10 % , molecular weight in the range of about 5 × 10 3 to about 1 × 10 6 daltons , and absence of charged groups in an aqueous medium having ph in the range of about 6 to about 9 . in one embodiment , polymers of the invention are selected from the group consisting of polylactams , such as polyvinylpyrrolidone ; n , n - disubstituted polyacrylamides ; and n - substituted polyacrylamides . in accordance with the method of the invention , a sufficient amount of polymer adsorbs to the capillary surface to establish a zone of high viscosity that shields the analyte from the wall and impedes the movement of an electrical double layer under an electric field .

a method is provided for carrying out depolymerization of a polymer containing electrophilic linkages in the presence of a catalyst and a nucleophilic reagent , wherein production of undesirable byproducts resulting from polymer degradation is minimized . the reaction can be carried out at a temperature of 80 ° c . or less , and generally involves the use of an organic , nonmetallic catalyst , thereby ensuring that the depolymerization product are substantially free of metal contaminants . in an exemplary depolymerization method , the catalyst is a carbene compound such as an n - heterocyclic carbene , or is a precursor to a carbene compound . the method provides an important alternative to current recycling techniques such as those used in the degradation of polyesters , polyamides , and the like .

the invention provides methods and compositions generally useful to the use of polymerase chain reaction amplification of trace dna sequences from formalin - fixed paraffin - embedded biopsy samples and specifically relevant to the identification of multi - drug resistant h . pylori in such biopsy samples .

a dispensing pump for liquid or pasty products comprising a housing , a piston arranged to move telescopically within the housing between rest and activated positions and a plastics spring arranged to return the piston from its activated to its rest position . the plastics spring has a folded , concertina configuration to provide the required return force for the piston . the spring also has end plates , which can be adapted increased functionality . the whole pump may be moulded from a plastics material and has few component parts .

a method of forming a thermoplastic article , comprises steps of a ) positioning at least one preheated first component being hollow and having at least one open end in two co - operating first mould halves ; b ) extruding a blow - mouldable thermoplastic material into the first component and closing the mould halves ; and c ) blowing the blow - moldable thermoplastic material inside the mould halves to form an article on which the first component is fixedly engaged . the method is simple in implementation , low in cost and easy in modification , and by which a thermoplastic article of varied colors , patterns , materials , and / or functional components being fixedly mounted on its outer surface could be realized .

proposed is a paper gathering and feeding method , a device therefor , and a rotation member acting sufficiently also on any deformed notes at the time of gathering , and at the time of feeding , feeding is not prevented irrespective of the plasticity deformation , and an object thereof is to reduce the exchange frequency and maintenance of the rotation member , extend the continuous operation time of the paper gathering and feeding device , and realize comprehensive reduction of production cost , service cost , and the like . with respect to a paper gathering and feeding method or a device therefor performing a gathering process for dropping paper to be transferred in a transfer section to gather the same in a gathering section , and a feeding process for feeding the paper gathered in the gathering section to the transfer section , a rotation member provided with a changeable piece changeable with a radius distance between a tip section and a rotation axis is provided in the vicinity of a coupling section between the transfer section and the gathering section , and at the time of the gathering process , the rotation member is so formed as to rotate in a gathering direction to slap down the paper using the changeable piece with the wider radius distance , and at the time of the feeding process , the rotation member rotates in a feeding direction to perform the feeding allowance operation to allow the paper to be fed .

this invention describes the application of selected polymers as novel drug delivery systems which use the body temperature and ph to induce a liquid to gel transition of the polymer which contains a drug or therapeutic agent therein . the goal of such a delivery system is to achieve a greater degree of bioavailability or sustained concentration of a drug .

a depolymerized - carboxyalkyl polysaccharide formed by de polymerizing a polysaccharide having from 0 . 5 to 3 . 0 degrees of substitution and reducing the molecular weight of said polysaccharide before or after said depolymerizing provides a biodegradable scale inhibitor useful to prevent deposition of scale comprising , for example , calcium , barium , sulfate and salts thereof . the depolymerized carboxyalkyl polysaccharide is particularly useful in off shore oil production squeeze treatments and in the treatment of scale formed in industrial water treatment .

a method for producing a plastic article includes extruding an approximately tubular blank from an extrudate and shaping the blank into a hollow body inside a blow - mold using differential pressure , wherein at least one insertable part is introduced into the interior of the partially molded plastic article before the latter is fully shaped into a finished plastic article , and the tubular blank is arranged between at least two halves of a blow - mold by means of an intermediate frame .

this invention is about a string line holder , used by construction workers for aligning construction units , that is inexpensive to make because of its simplicity in structure and its material which string line holder , after the string line is used up or defrayed , can be completely disposed of and replaced by another inexpensive string line holder of the same structure . the string line holder is made from a cylindrically shaped reel or spool on which the string line is wound and has an elongated handle which can be entirely inserted within a cylindrical passageway through the reel or spool and can be partially withdrawn from the cylindrical passageway such that the reel or spool can be rotated around a portion of the elongated handle . the string line holder , including the reel or spool and the elongated handle , is constructed from an inexpensive material such as cardboard or plastic .

an oven for use be in heating stations of thermoforming apparatus , comprises a heating panel constituted by panel portions which can be mutually opened or separated by a controlled falling operation or by gravity . thus , in an emergency condition , the panel can be immediately removed from the plastic material being deformed , even in a case of a malfunction of the driving mechanism controlling the operation of the oven .

a method of producing hollow plastic components , such as for air conduction in internal combustion engines , in which two or more molded or hollow body members are manufactured using injection molding technology , are thereupon brought together and are joined together using plastic welding technology .

biodegradable thermoplastic materials made of blends of starch esters and polyalkylene glycols with additions of polybasic aliphatic carboxylic acids and oxycarboxylic acids are improved with respect to water stability and mechanical characteristics and barrier properties by admixing to the blends aliphatic polycarbonates at levels of from 5 : 95 to 95 : 5 with the optional addition of ecologically compatible plasticizers and fillers . these materials can be used for all goods which are to be packaged in films , in particular tobacco products , but also soap , paper tissues , toilet articles , and the like . in addition to biodegradability , said materials are characterized in that they may be fed to a special recycling process , but also to conventional recycling processes without adversely affecting them .

polyamines having the formula : ## str1 ## wherein r 1 and r 2 are alkyl , aralkyl or aryl having up to 10 carbon atoms ; and a and b may be the same or different and are integers from 1 to 8 ; or a salt thereof with a pharmaceutically acceptable acid . anti - neoplastic , anti - diarrheal , anti - peristaltic , gastro - intestinal anti - spasmodic , anti - viral , anti - retroviral , anti - psoriasis and insecticidal compositions comprising biologically effective amounts of the above - described amines and biologically acceptable carriers therefor are also disclosed , as well as methods of treatment , administration or application of biologically effective amounts of the polyamines of the invention . also disclosed are methods for preparing the polyamines of the invention .

a stand - alone dispensable bag and method for packaging prescription drugs , cosmetics , and small objects wherein the bag comprises a bag made of plastic . the bag has a flap which covers an opening of the bag . the bag has a bottom gusset so that the bag can open flat on the bottom .

method and apparatus are disclosed for making integrated optical circuits . a waveguide in the form of a thin layer of dielectric material is modified as to its coherent radiation transmitting properties by electron beam impingement thereon so as to modulate coherent radiation by mode conversion and mode guiding . preferably the layer is of thermoplastic material which is locally charged by the electron beam and is heated to allow corresponding deformation due to the forces generated by the localized charging . when cooled , the deformations are frozen in but may be erased by subsequent reheating whereafter the deformation process may be repeated , thus allowing reuse of the device for a different optical circuit , or allowing its modification to form a different optical circuit .

a germ - free beverage lid system ; a protective covering specially designed for the plastic lids that are used for beverages sold in coffee house chains , fast food restaurants , convenience stores , and similar outlets . the intent is to provide a more hygienic means of offering these type of lids to consumers , helping to create a sterile cup lid to stop the spread of germs and bacteria .

a method and apparatus for treating refuse by non - combustibly shrinking polyfoam plastics in the refuse . the trash is heated at a temperature between 250 ° and 500 ° for a minimum period of time . a rotatable chamber heats the refuse and transports the refuse for the minimum period of time . an operator controls the rate of rotation of the chamber and thus the time of heating in accordance with the moisture content of the refuse . a steam / air mixture used as a heat medium serves to kill bacteria in the refuse in addition to shrinking . and drying the refuse .

disclosed are a top shell or bottom shell made from a deep - drawn molded plastic part as well as a receptacle which is composed of the two joined shells . the invention further relates to a method and a device for producing a top shell or a bottom shell . the aim of the invention is to create a first and second shell which can be produced inexpensively as a disposable item while allowing the same to be locked together in a fixed but easily removable manner by joining the two shells together so as to create a largely tight receptacle . said aim is achieved , among other things , by embodying a reducing collar between the holding edge and the pot - type central part on the top shell while disposing at least two identically pitched threads on the inner face of the holding edge . the reducing collar delimits the at least two threads on one side while said at least two threads are provided with an open thread inlet .

an orthopedic screw with an internal bore and mating driver has a bioabsorbable polymer component . to increase the torque tolerance of the screw and to minimize the likelihood of the driver stripping inside the bore of the screw , the screw and driver are heat treated together to shrink fit the screw onto the driver thereby increasing the driver - to - screw contact and distributing the loading force over a greater area to protect against material failure . the heat treatment involves heating the screw to an elevated temperature and holding that temperature for a period to promote stress relaxation and / or crystallization of the material .

disclosed are oligonucleotides useful in methods for determining whether a sample contains atopobium vaginae or has an increased likelihood of containing atopobium vaginae , an organism which is seen in conjunction with bacterial vaginosis or is a causative agent of bacterial vaginosis . these oligonucleotides , which have nucleotide sequences derived from a segment of the genome of atopobium vaginae , are useful as forward and reverse primers for a polymerase chain reaction using nucleic acids from a biological sample as a template , and as probes for detecting any resultant amplicon . detection of an amplicon indicates the sample contains atopobium vaginae or has an increased likelihood of containing atopobium vaginae .

a biocompatible polymeric composition for cross - linking in - situ in a wound is disclosed comprising 1 ) one or more polyanionic polymers such as alginates or hyaluronates , able to be cross - linked the surface of the wound and 2 ) one or more polycationic polymers such as chitosan or deae - dextran , that assists in the solidification process as well as speeds up hemostasis without the need for applying pressure . the biocompatible polymeric composition may further comprise a cross - linking agent such as aqueous calcium chloride . the invention encompasses an initial polymeric composition , the solidified matrix cross - linked and integrated at the wound site , including the methods of using , applying , and cross - linking the composition .

a biocompatible biological component is provided comprising a membrane - mimetic surface film covering a substrate . suitable substrates include hydrated substrates , e . g . hydrogels which may contain drugs for delivery to a patient through the membrane - mimetic film , or may be made up of cells , such as islet cells , for transplantation . the surface may present exposed bioactive molecules or moieties for binding to target molecules in vivo , for modulating host response when implanted into a patient and the surface may have pores of selected sizes to facilitate transport of substances therethrough . an optional hydrophilic cushion or spacer between the substrate and the membrane - mimetic surface allows transmembrane proteins to extend from the surface through the hydrophilic cushion , mimicking the structure of naturally - occurring cells . an alkylated layer directly beneath the membrane - mimetic surface facilates bonding of the surface to the remainder of the biological component . alkyl chains may extend entirely through the hydrophilic cushion when present . to facilitate binding , the substrate may optionally be treated with a polyelectrolyte or alternating layers of oppositely - charged polyelectrolytes to facilitate charged binding of the membrane - mimetic film or alkylated layer beneath the membrane - mimetic film to the substrate . the membrane - mimetic film is preferably made by in situ polymerization of phospholipid vesicles .

a device for adjusting the opening travel of a mold holder unit of a machine for molding plastic materials , comprising a movable plate which is arranged to support a portion of the mold and is actuated by at least one cylinder comprising a piston movable in a casing , said plate being movable , during the opening travel , from a first position , in which said mold is closed , to a second position in which said mold is open , is described . on the casing of the cylinder there being provided a member movable axially with respect to said casing and displaceable axially with respect to the casing by screw means in order to act as a stop for said piston during said opening travel .

the present invention relates to a method intended for heat insulation of a pipe , comprising the following successive stages of depositing , on the outer surface of the pipe moving longitudinally , a thickness of an insulating material made of elastomer having an elastic type behavior , substantially without irreversible plastic deformation , forming at least one circumferential slot in the thickness of the material substantially orthogonally to the axis of the pipe , and coating the insulating material thickness with a sealed sheath . in a variant , the slot is machined in the thickness of the insulant . the invention further relates to a heat - insulated pipe .

in accordance with the present invention , a high intensity radiopaque contrast agent is disclosed . the agent may be coated on or incorporated within bulk materials , which may then be subsequently utilized to fabricate a radiopaque medical device . primary effects through chemistry include higher radiopaque concentrations per unit weight of the radiopaque element or agent . secondary effects include selective placement of the radiopaque elements which may further enhance the radiopacity of the device with reduced requirements of the radiopaque agent . such a radiopaque contrast agent may be produced in various forms such as a dendrimer and / or incorporated as the end groups of polymeric chain . in addition one can incorporate biological and / or pharmaceutical agents in combination with the present invention .

a method and apparatus for making inexpensive , form - fitted , protective cases of thermal plastic or polycarbonate material that can be easily printed with decorative imagery and / or electronic circuitry for a variety of products , such as portable music players or radios , cell phones , lap - top computers , and the like . the method involves creating a tool having substantially the same surface dimensions of a product . an element is then molded from bulk film of thermoplastic material using the tool . once the element is molded , it is trimmed from the bulk film . the resulting apparatus is a protective case intended to form - fit over the surface features and dimensions of the actual product used to define the tool .

a plastic garment hanger having a hook with an abutment for engaging an aperture formed in an indicator cap to support the indicator cap on the hanger is provided . a hook having an upwardly projecting web which defines an aperture wherein a descending flexible tongue for engaging an aperture formed in an indicator cap is also provided .

a balloon sleeve is provided for a balloon catheter , and the balloon catheter itself with the balloon sleeve provided wherein a substantially smaller front end cross - section is presented for insertion into a patient . the balloon sleeve has a thermoplastic film positioned adjacent each end thereof . however , one is on the internal surface and one on the outer surface enabling mounting the sleeve in a reverse lap fashion wherein the entire balloon body is so reverse lapped when mounted . the mounting eliminates separate objects for securing the balloon sleeve . nevertheless , the manner of mounting causes the inflated balloon to flow over and protect a patient from the catheter end .

applicants have produced a chromophore and a polymer that are highly sensitive to the presence of various agents , including organophosphates , pesticides , neurotoxins , metal ions , some explosives , and biological toxins . the detection is accomplished by detecting a change in the fluorescence characteristics of the chromophore or polymer when in the presence of the agent to be detected . the chromophore and polymer may be incorporated into sensors of various types , and they are adaptable for potential field use in areas where detection of these types of agents is desired .

the present invention relates generally to novel genetic sequences that encode fatty acid epoxygenase enzymes , in particular fatty acid δ12 - epoxygenase enzymes from plants that are mixed function monooxygenase enzymes . more particularly , the present invention exemplifies cdna sequences from crepis spp . and vernonia galamensis that encode fatty acid δ12 - epoxygenases . the genetic sequences of the present invention provide the means by which fatty acid metabolism may be altered or manipulated in organisms , such as , for example , yeasts , moulds , bacteria , insects , birds , mammals and plants , and more particularly in plants . the invention also extends to genetically modified oil - accumulating organisms transformed with the subject genetic sequences and to the oils derived therefrom . the oils thus produced provide the means for the cost - effective raw materials for use in the efficient production of coatings , resins , glues , plastics , surfactants and lubricants .

a device for passing a biopolymer molecule includes a nanochannel formed between a surface relief structure , a patterned layer forming sidewalls of the nanochannel and a sealing layer formed over the patterned layer to encapsulate the nanochannel . the surface relief structure includes a three - dimensionally rounded surface that reduces a channel dimension of the nanochannel at a portion of nanochannel and gradually increases the dimension along the nanochannel toward an opening position , which is configured to receive a biopolymer .

an apparatus useful for the extrusion of high melting slippery plastic resins comprising a screw element which operates rotatably within a close - fitting barrel having cut into the interior surface thereof a shallow and narrow groove of the same hand and substantially the same lead as the screw element .

a dihydrolipoamide dehydrogenase in a germ is recombined . the new dld is applied in a solution to degrade an ether bond of an organic polymer . with the present invention , bioremediation is accomplished without secondary pollution of compounds which have environmental hormones .

a process and material therefrom is described where a material comprised of a continuous orientable polymer matrix with one or more discontinuous or continuous second phases is stretched in the solid state using more than one device to apply force to the unoriented material to form a material that consists of a continuous oriented polymer matrix with one or more other phases . at least one of the phases releases from the oriented polymer matrix forming voids during the orientation process , thereby reducing the density to less than that of the original unoriented mixture . one or more of the phases may stay bonded to the continuous oriented polymer phase , acting as a reinforcing agent and forming no voids . methods for forming such a material allowing for the control of the final shape and affecting the final density independent of the composition are also disclosed .

an industrially advantageous process described below has been established wherein tetrahydrofuran and a cyclic ether copolymerizable therewith are copolymerized by the use of a very small amount of a commercially available heteropolyacid as it is untreated , the heteropolyacid of the catalyst is recovered , recycled and reused in a simple way , and a high quality polyether substantially free from catalyst contaminants is obtained . a process for producing a polyether , comprising the steps of copolymerizing tetrahydrofuran and at least one cyclic ether copolymerizable therewith by the use of an untreated heteropolyacid as a catalyst in the presence of a hydroxy compound to form a reaction liquid , contacting the resulting reaction liquid with an anion exchange resin so that the heteropolyacid contained in the reaction liquid adsorb to the anion exchange resin to remove the heteropolyacid , desorbing the removed heteropolyacid from the anion exchange resin to reuse it as the catalyst , and reusing the anion exchange resin after the desorption as it is , thus to recycle and reuse both the catalyst and the anion exchange resin .

the present invention relates to polymeric compositions useful in the manufacture of biocompatible medical devices . more particularly , the present invention relates to certain cationic monomers capable of polymerization to form polymeric compositions having desirable physical characteristics useful in the manufacture of ophthalmic devices . such properties include the ability to extract the polymerized medical devices with water . this avoids the use of organic solvents as is typical in the art . the polymeric compositions comprise polymerized cationic hydrophilic siloxanyl monomers prepared by the process disclosed herein .

high accuracy positioning relative to an absolute reference position is provided for a plurality of cores constituting a polymer waveguide array for connection to ferrules at ends of a plurality of these assemblies to form a single - mode polymer waveguide array assembly . a method for forming a single - mode polymer waveguide array assembly enables a plurality of cores constituting a polymer waveguide array to be positioned with high accuracy . also provided is a combination of process molds used in the processes unique to the present methods .

the present invention provides a polymer membrane enhanced with cured epoxy resin for use as the outer membrane of biosensors . the membrane includes approximately 30 - 80 % epoxy resin adhesives , 10 - 60 % polymer such as poly , polycarbonate and polyurethane and 0 - 30 % plasticizers and 5 - 15 % surface modifier reagent such as polyethylene oxide - containing block copolymers . utilizing the polymer membrane of the present invention , a three - layered sensing element has been developed . this sensing element will be particularly useful for miniaturized biosensors used for in vitro blood measurements or for continuous in vivo monitoring such as implantable biosensors . this element includes an enzyme layer , an interference - eliminating layer and the novel polymer member of the present invention as the outer polymer layer . this novel sensing element shows excellent response characteristics in solutions and has an extremely long lifetime . this technology is particularly useful for improving the lifetime of implantable biosensors .

disclosed herein is a plastic compound lens for a headlight . the plastic compound lens includes a first lens part including a first light - incident surface and a first shaped surface and made of a first material , and a second lens part including an inside shaped surface and an outside convex - shaped surface and made of a second material . the second lens part extends to surround the first lens part . the first light - incident surface of the first lens part is formed as any one of plane , convex , concave , and aspherical surfaces , and an aspherical surface including an inflection point . the first shaped surface of the first lens part is formed as a surface of any one of concave , convex and aspherical lenses , and an aspherical lens including an inflection point . the inside shaped surface of the second lens part is formed to correspond to the first shaped surface of the first lens part .

a watercraft having a seat securely carried on the watercraft , the seat having a plastic seat frame and a plastic seat back frame . the seat frame and the seat back frame are joined via a hinged connection . the bottom of the seat frame has receptacles that easily engage with engagement elements mounted on the deck of the watercraft . the seat has mechanism to easily adjust the height of the front of the seat , the height of the rear of the seat , the recline angle , and the amount of lumbar support . the seat has four legs stored under the seat frame which can be plugged into the seat frame to turn the seat into a lawnchair .

the invention provides novel polyesters , fibers and films , nonwovens from the fibers and disposable products of the polyesters such as diapers from the nonwovens . the products are degradable under the conditions typically existing in waste composting processes , have low ingredient costs and yet provide strength and toughness properties adequate for end uses such as in disposable diapers . the polyesters are based upon polyethylene terephthalate copolymerized with diethylene glycol and a 5 - sulfoisophthalic acid .

a co - extruded microlayered polymer barrier film is provided . the barrier film can be applied to paperboard to form a container having reduced oxygen gas permeability . co - extrusion of the barrier film allows for the simultaneous fabrication of tens or hundreds of alternating microlayers of two different polymers that combine to form a film having reduced oxygen gas permeability compared to macro layer thickness films of the same two polymers .

this mechanism offers a simple solution wherein an axial movement of a grooved piece brings about a radial movement of rigid balls that grip and deform a pipe that is initially in a plastic state . depending on the geometry of the channels of the grooved piece , a variable grip is achieved . this gripping operation is simply released as the grooved piece returns to its initial position , the pipe itself now being in a solid state , so that the balls are returned to their initial position . the correct position for gripping the plastic pipe can be detected by a detector . the pressurization of the plastic pipe can be achieved thanks to an elastic joint on the piece that surrounds the pipe .

a non - metallic element system is provided as part of a downhole tool that can effectively seal or pack - off an annulus under elevated temperatures . the element system can also resist high differential pressures without sacrificing performance or suffering mechanical degradation , and is considerably faster to drill - up than a conventional element system . in one aspect , the composite material comprises an epoxy blend reinforced with glass fibers stacked layer upon layer at about 30 to about 70 degrees . in another aspect , a mandrel is formed of a non - metallic polymeric composite material . a downhole tool , such as a bridge plug , frac - plug , or packer , is also provided . the tool comprises a support ring having one or more wedges , an expansion ring , and a sealing member positioned with the expansion ring .

a transparent typewriter bail is described having a transparent bar and end support elements which seat on a typewriter platen and preserve the integrity of the shape of the transparent bar when it is installed in a typewriter . the end support elements may be in the form of rollers or adjustable elements with which one may vary the spacing between the platen and the transparent bar for optimum performance . bowing and permanent set distortions of plastic transparent bars are effectively prevented to provide a transparent typewriter bail through which typed text can be read .

a method of producing a biologic liquid sampling tablet is disclosed and includes molecularly imprinting a polymer over a matrix of an analyte of interest for biological testing ; and removing the matrix from the imprinted polymer to form a porous tablet . the tablet is sized to be inserted in an ampoule or human oral cavity .

a molding apparatus that blow molds a polymeric container having a glasslike appearance and having a shape exhibiting superior stability against toppling . the container includes a base defined by a chime and a bottom having a central push - up region . a plurality of support feet surrounds and protrudes downwardly from the bottom , each of the support feet having a substantially flat contact surface and having a radially outermost point corresponding with a vent of the apparatus at a point wherein the bottom merges with the chime .

a method for manufacturing retortable cans is taught which includes the step of cable extruding a tube of plastic . subsequently , a substantially gas - tight material is laminated to the outside of the tube and a plastic layer is laminated to the layer of substantially gas - tight material . preferably , the gas - tight material comprises a metallic foil .

a heat moldable composite panel is particularly useful as an automotive headliner and other as structural parts which must have heat and sound insulating properties as well as sound absorbing properties . the panel comprises a corrugated core which is advantageously dual arched core or corrugated metal foil , with opposite sides . one side is covered by a linerboard and is attached to the core through thermoplastic adhesive . the opposite side is covered by a thermoformable foam layer which is attached to the core by heat activatable adhesive . the entire structure is formable in a molding die at relatively low temperatures .

fluid dispensing apparatus comprising a housing containing two box - like members , an upper and a lower with the lower box being adapted to slide into the upper box to provide a space beneath it for receiving a plastic bag containing a fluid to be fed therefrom . a drive plate is disposed within and in operative relation with the lower box and a plurality of springs disposed between the drive plate and the lower box cause the lower box to apply pressure to the plastic bag to dispense fluid therefrom .

disclosed is a laminate film of thermoplastic resin , comprising v - shaped or semicircular grooves between protruded parts formed continuously in a longitudinal direction and a transverse direction of the film , on one surface thereof , which is advantageous in that , upon conducting a lamination process , generation of air pockets between the laminate film and a subject to be coated can be effectively prevented , and the laminate film does not come off the subject .

a unitary packaging device for packaging an article includes a resilient three - dimensional web of extruded polymer monofilaments , the polymer monofilaments being heat welded at junctions to form an open network of tangled monofilament , and the resilient three - dimensional web of extruded polymer monofilaments is configured to modify the contact area between the article and an exterior container .

the present invention is directed to a biocidal water treatment composition , water treatment apparatus , and method of treating water to reduce levels of pathogens . the composition contains sources of copper , zinc , and silver metal ions within a crosslinked polymer matrix . examples of these ion sources include copper sulfate , zinc sulfate , and silver nitrate . an example of the crosslinked polymer matrix is crosslinked chitosan , which also serves to clarify the water and release the metal ions over time . the product is easy to manufacture , and allows the use of decreased halogen sanitizer , as well as decreased copper ion , thereby decreasing the likelihood of staining . the product simultaneously provides good bactericidal and algaecidal properties , despite low levels of copper ion and low chlorine levels .

a method of fabricating an apertured polymeric film . the method comprising the steps of : masking a polymeric film with a first mask having first laser transmission zones defined therein ; laser - ablating first apertures through the polymeric film using the first mask ; masking the film with a second mask having second laser transmission zones defined therein , each second zone being aligned with a corresponding first aperture , and each second zone having greater perimeter dimensions than the corresponding first aperture ; and reaming the first apertures by laser - ablating the polymeric film using the second mask , the reamed first apertures defining second apertures in the film .

tooth tissues include the pulp mesenchyme that forms the dentin and an epithelium that is responsible for enamel formation . cells from these tissues were obtained from porcine third molars and were seeded onto a biodegradable scaffold composed of a polyglycolic acid — polylactic acid copolymer . cell polymer constructs were then surgically implanted into the omentum of athymic nude rats so that the constructs would have a blood supply and these tissues were allowed to develop inside the rats . infrequently , columnar epithelial cells were observed as a single layer on the outside of the dentin - like matrix similar to the actual arrangement of ameloblasts over dentin during early tooth development . developing tooth tissues derived from such cell polymer constructs could eventually be surgically implanted into the gum of an edentulous recipient where the construct would receive a blood supply and develop to maturity , providing the recipient with a biological tooth replacement .

thermoplastic rubber containing minor amounts of amorphous polypropylene is extruded into films . the films retain characteristic elastomeric properties of pure rubber , but are significantly more processable owing to the presence of the amorphous polypropylene .

the flexible packaging composites include one or more mineral - containing layers with a bonding agent . the composite structure is used as a primary or secondary packaging container or insulating material . in addition to the mineral - containing layer , the composite can contain one or more non - mineral containing layers , including various combinations of extruded resins , cast or blown films , and fibers . the mineral - containing layer is substantially and continuously bonded to the other layers . the present invention is an unexpectedly unique and environmentally friendly composite structure containing mineral layers with bonding agents as a key component . the material is designed to form flexible and semi - rigid storage articles at equal or lower costs to prior art solutions while providing a mineral containing layer that is a very smooth , has comparatively high plasticity , and having a high quality printing surface not requiring corona treatment . the composite structure is used as a primary or secondary packaging container or insulating material . in addition to the mineral containing layer , the composite could contain various combinations of extruded resins , cast or blown films , and fibers . the mineral containing layer is substantially and continuously bonded to the other layers . the polymer , fiber , and mineral containing layers can be shaped , sized and manufactured such that the composite structure formed is subsequently machined to form a storage article . the composite structure has advantages including a high degree of pliability and flexibility , a minimum 37 dyne level on the surface of the mineral containing layer ; a mineral containing layer that is highly 86 opaque , and has a bright , white printing surface that readily accepts coating and inks , therefore , rendering it highly attractive to consumers . further , the composite structure has tensile strength , dead - fold , stiffness , and other characteristics that allow it to be readily machined into desired storage article forms and storage article closures , therefore , the material can be used for as a variety of food , consumer , industrial , anti - static , and commercial uses . other mineral containing layer advantages include environmentally attractive features such photo - degradability , recyclability , compost - ability , and bio - degradability .

this invention is the design and synthesis of a caprolactone monomer which bears a pendant protected carboxyl group . this monomer has been copolymerized with caprolactone in varying ratios . after polymerization , the protecting group can be removed and an antibiotic can be attached as a new pendant group . the bioactivity of the antibiotic - bound poly polymer is described .

the invention relates to a composition for use in the production of an article of manufacture , and in particular , to the manufacture of wall and corner guards . the composition includes a biopolymer in combination with petg as well as a modifier . the biopolymer and modifier are preferably produced from an annually renewable source such as corn or sugar as opposed to traditionally used petroleum based plastics . in this manner , the composition of the invention is relatively environmentally friendly as compared to known compositions while maintaining many of the desirable qualities thereof . in addition , the production of the articles of manufacture results in the consumption of fewer fossil fuels and less production of pollutants .

a rotatable shell cutter member for cutting a hole in large diameter and thick wall plastic pipe . the shell cutter member is rotated and advanced with a positive predetermined lead against the plastic pipe and it first forms a hole in the plastic pipe by cutting and retaining a coupon therefrom and it further progressively enlarges the hole to a diameter equal to or slightly greater than the overall outside diameter of the shell cutter member . the chips initially cut from the plastic pipe in cutting the coupon are discharged upwardly and inwardly of the shell cutter member above the coupon being cut and , when the shell cutter member with its cutting edge in constant cutting engagement with the pipe begins cutting a continuous chip cut , it is also discharged upwardly and inwardly of the shell cutter member . the cutter blade for cutting the plastic pipe is detachably secured to the body member of the shell cutter member so that it may be easily removed and replaced or resharpened and cleaned when the situation requires such action . a drilling machine powered by a compressed air motor , electric motor or gasoline powered engine may be used to rotate and advance the shell cutter member although hand operated drilling machines with positive feed advance may also be used .

the invention disclosed relates to intrinsically bacteriostatic synthetic polymer membranes , and to process for the manufacture thereof . in one embodiment , bacteriostatic metal ions are attached to a surface of a preformed synthetic polymer membrane by static adsorption / adsorption and reduced to the metal in situ . in another embodiment , the instrinsically bacteriostatic membranes are formed by providing a casting solution of a membrane forming synthetic polymer and bacteriostatic metal ions , and casting into a bath containing a reducing agent for the metal ions to form the membrane containing the metal ions incorporated therein .

the present invention relates to a method and apparatus for molding plastic articles . more specifically , the present invention is directed to a staged sequentially separated apparatus for injection molding of plastic panels having a flap or tab molded therewith in a single molding and forming step . the present invention provides , among other things , a method and an apparatus for forming an injection molded part with an undercut , the undercut lying generally in a plane of a major portion of the part , the undercut having an open elongate opening and being positioned between an elongate integrally molded tongue and panel . the apparatus comprising a first mold half with a first mold cavity defining surface , a second mold half with a second mold cavity defining surface , a tongue member carried by the second mold half and projecting into a mold cavity . the tongue member having generally opposing facing surfaces spaced from the first and second mold cavity surfaces for forming opposite face of a molded part undercut . the apparatus also comprising means to selectively effect movement of the transverse mold insert relative to at least a portion of the remainder of the second mold half .

the present invention discloses a complex of clay and polyoxyalkylene amine grafted polypropylene and a method for producing the same . the clay in the present invention is formed by modifying inorganic layered silicate clay with an amphibious intercalating agent obtained by polymerizing polyoxyalkylene amine having molecular weight over 1 , 800 and polypropylene - grafting - maleic anhydride . the method for producing the complex is primarily to polymerize the polyoxyalkylene diamine having molecular weight over 1 , 800 and polypropylene - grafting - maleic anhydride to form an amphibious intercalating agent , which is then acidified with an inorganic acid , and mixed with the swelled clay by powerfully stirring at 60 - 80 ° c . for cation exchanging to obtain the titled complex . according to the present invention , the complex is an excellent surfactant and a reinforcing agent of polymers .

this invention provides biodegradable , biocompatible polymeric films having uniform selected thicknesses between about 60 micrometers and about 5 mm useful in the manufacture of therapeutic implants for insertion into a patient &# 39 ; s body . the films may be shaped to cover implants made of other materials to improve their biocompatibility . the films may be coated with or incorporate bioactive agents . they may have differing properties , e . g ., porosity , thickness , and degradation rate , in different areas .

a cross - head die for applying a coating layer to a filamentary member , e . g ., plastic insulation to an electrical wire , includes a die body with an axial bore in which a tip holder is removably positioned with tapered surfaces of the holder in engagement with like - tapered surfaces of the bore . the holder is maintained in position by a lock nut on a threaded portion of the holder extending out of the die body . in order to assist in removal of the tip holder , an auxiliary nut , engageable with the threads on the tip holder , is provided . the threads on the collar and lock nut are right - hand , while those on the tip holder and auxiliary nut are left - hand , or vice versa . in order to remove the tip holder , the lock nut is backed off a few turns and the auxiliary nut is threaded on the tip holder until it engages the lock nut . as torque is applied to the auxiliary nut an axial force is exerted on the tip holder , pulling it free of the body bore and permitting its easy removal after both nuts are removed .

the instant invention involves the use of a combination of preparatory steps in conjunction with mass spectroscopy and time - of - flight detection procedures to maximize the diversity of biopolymers which are verifiable within a particular sample . the cohort of biopolymers verified within such a sample is then viewed with reference to their ability to evidence at least particular disease state ; thereby enabling a diagnostician to gain the ability to characterize either the presence or absence of at least one disease state relative to recognition of the presence and / or the absence of the biopolymer .

a plastic container suitable for hot - fill food packaging applications is disclosed which is characterized by walls of proportionately decreasing thickness from the mouth of the container to a predetermined collapsible point . the wall thickness is designed such that the container walls will collapse , or deform , only at the collapsible point during cooling after hot - filling of food product or during transportation of the container between locations of varying altitudes and pressures . the container preferably collapses in the base area such that the collapse is not visible to the consumer and also the collapse does not affect stability of the container while in use or during loading and storage . the container of the invention is advantageous in that it requires less plastic material to form than other known hot - fill containers , and also can be formed out of any suitable food - grade plastic material or by any process .

polyethylene terephthalate scrap material containing on its surface a chlorine - containing polymer such as , for example , polyvinylidene chloride or polyvinyl chloride , can be recovered and reused by melt - blending it with a polymer from a defined class of ethylene copolymers containing an epoxy group , and melt processing the blend in the same manner as virgin polyethylene terephthalate . the recovered and reprocessed polymer material has good physical properties and barrier properties .

a netting material , useful for insect netting , comprising a glass yarn fiber material with increased durability over currently available netting material . the glass yarn fiber material contains glass filaments extruded such that the filaments and ensuing glass yarn fibers contain a small diameter . the yarn fibers permit flexibility of the material and ready light penetration and ventilation . the material can be coated with a plastic , such as pvc as well as insecticides , and other biocides .

a group of individual thermoplastic articles are arranged in a dispensing relationship by fusion - bonding individual articles to one another so as to form a cartridge for dispensing purposes .

prophylactic devices are made in an inert atmosphere by cooling mandrels on which the devices are to be deposited , dipping the mandrels into a polymeric material in a solvent / carrier and a mold release agent , rotating the mandrels during and after the dipping , and evaporating the solvent after dipping . the apparatus includes an air lock between a section in which these functions are performed and a section located in an air atmosphere for removing the devices from the mandrels , followed by cleaning the mandrels for use in a subsequent production run for making devices .

the polymerization of fluoromonomers can be accomplished without fouling by using gaseous monomers in the presence of at least one nonvolatile initiator and by recycling the initiator - free polymerizer gases through an external cooler .

the invention relates to a continuous band for producing bags for fruit and vegetable products , formed from a continuous plastic sheet which has been die - cut to produce a series of small holes which are closed using mesh or net fragments fixed along the periphery of said holes by means of heat - sealing , gluing or any other conventional means . according to the invention , the area of the continuous sheet intended to contain the handle is provided with a transverse patch of pre - determined hardness in order to reinforce the area used to hold the bag once it has been filled , such that the thickness of the band - forming plastic sheet can be significantly reduced , specifically by a value of the order of 40 %, without affecting the performance of the bag in terms of mechanical strength since the area in which the greatest strains are concentrated corresponds exactly to the area containing the handle .

a tubular intraluminal prosthesis includes a ptfe or eptfe tubular structure such as a graft , and a tubular diametrically deformable stent circumferentially surrounding the tubular structure . the diametrically deformable stent includes a polymeric coating which allows for attachment to the tubular graft structure and enhances the biocompatibility and integrity of the composite prosthesis .

the present invention relates to a novel mg — ti — al composite metal hydroxide and to production method therefor . mg — ti — al composite hydroxide particles can be obtained by subjecting a solution containing a magnesium salt and a titanium salt to ultrasound processing and carrying out a high - temperature and high - pressure reaction with a solution containing an aluminum salt in the proportions of the metal elements comprised in the mg — ti — al composite metal hydroxide , thereby giving the advantageous effects that the halogen capturing ability is excellent and , when used in a polymer , degradation and earily - staining prevention properties and transparency are outstanding .

a system is disclosed for laminating surfacing materials , such as high and low pressure laminates , paper , wood veneers , metal foils and the like , to core material , such as plywood , particle board , flake board , hard board , rigid plastic foams and the like . the disclosure includes a machine for laminating , particularly utilizing high viscosity , hot melt adhesives within the ambient conditions of a factory . a sandwich is formed at ambient temperature with the adhesive between the laminate and core either as sheet material or precoated on the laminate or the core . the method employs a progressive heating of the adhesive and adjacent parts of the sandwich from ambient temperature through tackiness to an activating temperature followed immediately by a physical migration of the adhesive to wet out adjacent surfaces followed by a cooling of the sandwich to a mechanical bonding adhesive temperature . the machine is particularly useful in non - toxic , non - ventilated installations for laminating wherein it is desired to avoid solvent handling as well as the difficulties of melting and applying hot melt adhesives and controlling the necessary conditions thereof .

this is a double acting , multi - lane machine and method for the forming , filling and sealing of plastic or paper film pouches of various sizes commonly used to hold liquid viscous , dry , particulated or powdery materials or other substances . the machine includes a four roll film dispensing station , a multi unit pump or dispensing station , one of each double acting stations such as side seal station , pull wheel station , cross seal station , and cross cut station . the invention provides for production of a multitude of pouches in a manner of two sets of two films allowing to double the production output of current machinery without any change to cycle time or increase of operational time . coordination and movement of the various stations is accomplished through electronic computer control , working in conjunction with multiple motion controlling devices such as servo motors , air cylinders , belts , linkages and the like . the machines stations and components are adjustable or interchangeable so that pouches of various lengths and widths may be formed .

an entire structure utilizing fiber reinforced plastic pultruded structural shapes is provided for use in decks , docks , and boardwalks . this deck system for building decking , docks , boardwalks , walkways , gazebos , hot tub decks and spas can be built either to and extending from the exterior side of residential or commercial structures or as an independent , freestanding structure . the invention is assembled from frp pultruded components comprising several systems which include a weight bearing support system , flooring system , safety system , roofing system , and decorative system . components of the invention including but not limited to vertical support posts , horizontal decking , railing , stairs , gates , doors , frames and supporting members will be manufactured from frp pultrusion structural shapes and composite sections using corrosion resistant hardware and adhesives . the use of fiber reinforced plastic , allows for the manufacture of a corrosion - free , non - rotting , warp and splitting resistant decks and docks . frp structures do not suffer from the structural and thermal limitations that recycled plastic lumber and pvc experience . the decking surface will incorporate a skid - resistant surface using either pultruded material or honeycomb - sandwich flooring panels . portions or entire assemblies of the invention will be manufactured as modular units , which can be easily transported to the worksite for final assembly / installation . hollow sections in the frp pultruded shapes will be used to conceal electrical wiring for power and lighting fixtures . the intent of this application is to describe these types of structures and their components . the intent of the application is not to limit it to only these structures , but it can be extended to other structures such as gazebos , decks for hot tubs and spas , pavilions , and enclosed patios , pool enclosures , and property enclosures where the structure can be screened - in .

the invention is both a method and apparatus for cutting thermoplastic materials in an aesthetically pleasing fashion . a laser is used to cut a preselected pattern in a thermoplastic material , resulting in a removable cutting being created , which is extracted from the material . using a contrasting color of thermoplastic material , an identical laser cutting is made . the cutting from the first laser cutting operation is mated to the cavity created by the second laser cutting operation , resulting in a mosaic - type thermoplastic material which is pleasing to the eye . to ensure that the by - products of combustion from the laser cutting do not contaminate the heat - sensitive surfaces of the thermoplastic material , a directed source of vacuum is applied to the cutting table to ensure by - products of combustion are directed away from the cutting field .

a molded plastic fixture has a core body formed of a relatively rigid first plastic material and an outer body covering outer surface portions of the core body and formed of an elastomeric material overmolded on the core body and providing improved gripping of supported articles and frictional surfaces to enhance grasping by a user . the fixture is mountable on a wall surface by one or more suction cups , which may be unitary with the outer body or may form part of a separate mounting structure engageable with the fixture in either pivoting or longitudinally sliding relationship therewith . the outer body may be light - transmitting to permit viewing therethrough of the core body , which may be formed of a visually distinguishable material .

sucrose ester and ether products , useful as food or beverage bulking agents , reduced calorie sweeteners , fat replacement agents , stabilizing agents , thickening agents and emulsifying agents ; adhesives ; biodegradable plastics and films ; sizing agents for paper and textiles ; ethical pharmaceuticals and new fibers are prepared by using a two - phase reaction system in which sucrose is dissolved in an alkaline , aqueous solution and an acidic reagent such as a bifunctional acid dichloride or epoxide is added to the sucrose in a water - immiscible organic solvent . several types of products are produced : water - insoluble sucrose ester copolymers ; water - soluble sucrose ester copolymers ; sucrose ester dimers ; and intramolecular , cyclic sucrose esters . these products can be further varied by using different kinds of acid dichlorides or epoxides that contain different kinds of functional groups . the reaction proceeds at the interface of the water / organic solvent solutions whereby there is imparted a specificity that restricts the reaction to the 6 and 6 &# 39 ; primary alcohol groups of sucrose . the reactions can be selected for each of the four basic types of products by controlling the various reaction parameters .

a single - or multi - well sample preparation apparatus and method for desalting , concentrating and depositing samples prior to further analysis such as by maldi tof mass spectrometry . the apparatus in accordance with an embodiment of the present invention includes a plurality of wells each in fluid communication with a respective outlet or drainage opening , optionally containing a three dimensional membrane structure preferably comprising a plurality of sorptive particles entrapped in a porous polymer matrix so as to form a device capable of carrying out solid phase extraction . the apparatus is designed to allow for direct spotting onto a maldi target , thereby eliminating a transfer step . also disclosed is a method of sample preparation , deposition and analysis using the apparatus of the present invention .

ophthalmic compositions containing biocompatible , bioadhesive polymerizable amphipathic mesophase materials useful for repairing retinal tissue tears or retinal detachments are disclosed . in one embodiment , the polymerizable materials , which comprise substituted fluoroalkyl or perfluoroalkyl monomers having anionic , cationic , and / or nonionic surface active functionality in the unsaturated fluorophobic ends , are polymerized in vivo to provide effective , long - lasting repair of torn , ruptured or detached retinal tissue . ophthalmic applications of these materials are not limited to retinal repair .

a method of manufacturing a plastic molding of a foamable thermoplastic raw material blank or preform which contains a foaming agent by high frequency voltage heating in a molding die assembly defining a molding cavity , wherein gas discharging openings which extend through the thickness of the blank or preform are preformed in the raw material blank or preform .

the embodiments disclose means to inhibit the growth and migration of bacteria , mildew and fungus by applying various coatings which contain an inorganic anti - microbial agent onto metal , glass , and plastic substrates . the substrates are used in the manufacture of components for the interior of refrigerators and freezers , which include wire and glass shelving , plastic crisper baskets and other articles within the food storage area . the coatings include the inorganic anti - microbial agent combinet with a matrix resin which are applied by electrostatic powder coating , roller coating , or robotic spraying , and then cured .

a biocompatible composition which comprises crosslinkable serum albumin , crosslinkable serum protein and / or crosslinkable derivatives derived therefrom , and which is polymerizable to give a hydrogel - forming material , is used in a method for the prevention of pathological adhesions .