GEN Corporation

GEN Corporation of Japan developed a personal helicopter named the GEN H-4, but production was deferred pending large enough orders to make the aircraft economical.
The company also developed the GEN 125, a very small , twin-cylinder, two-stroke aircraft engine to power the H-4. The engine weighs and four are used in the H-4 design to provide redundancy.
The company does not have any fixed location, but has carried out its development work in borrowed facilities.
The company name translates as "fountain of wisdom".