ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,448, issued on May 27, was assigned to Xerox Corp. (Norwalk, Conn.).
"Polyimide microparticles" was invented by Hojjat Seyed Jamali (Mississauga, Canada) and Valerie M. Farrugia (Oakville, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing polyimide microparticles may comprise: combining a diamine and a dianhydride in a first dry, high boiling point solvent; reacting the diamine and the dianhydride to produce a mixture comprising poly(amic acid) (PAA) and the first dry, high boiling point solvent; emulsifying the mixture in a matrix fluid that is immiscible with the first dry, high boiling point solvent using an emulsion st...