JPMorgan Chase JPM.N is due to report on Friday along with Citigroup C.N and Wells Fargo WFC.N. By Bansari Mayur Kamdar Jan 13 (Reuters) - U.S. stock index futures were muted on Thursday ahead of jobless claims data and fresh inflation figures that are expected to give more cues on the Federal Reserve's tightening policy, while Delta Air Lines led gains among carriers on strong earnings. Major U.S. tech firms edged lower ahead of a White House meeting with their top executives, including representatives from Alphabet-owned Google GOOGL.O, Apple Inc AAPL.O and Amazon.com Inc AMZN.O, to discuss software security.