US Patent Issued to Nippon Kayaku on Oct. 20 for "Bismaleimide compound, composition containing same, polybenzoxazole, and semiconductor device" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,767,761, issued on Oct. 20, was assigned to Nippon Kayaku K.K. (Tokyo).

"Bismaleimide compound, composition containing same, polybenzoxazole, and semiconductor device" was invented by Naoki Kawamoto (Tokyo), Firyon Ko (Tokyo) and Taihei Koumoto (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bismaleimide compound represented by formula (1): wherein A1 represents a direct bond, a divalent linking group represented by formula (1-1), (1-2), or (1-3): wherein ring a represents a benzene ring or a cyclohexane ring; X represents a direct bond or a divalent linking group; and Z represents a monovalent substituent; and A2 represents a divalent linking g...