US Patent Issued to Nippon Kayaku on Jan. 13 for "Epoxy resin, epoxy compound, epoxy resin composition, resin sheet, prepreg, carbon fiber reinforced composite material and phenol resin" (Japanese Inventors)

ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,690, issued on Jan. 13, was assigned to Nippon Kayaku K.K. (Tokyo).

"Epoxy resin, epoxy compound, epoxy resin composition, resin sheet, prepreg, carbon fiber reinforced composite material and phenol resin" was invented by Yusuke Kawano (Tokyo), Masataka Nakanishi (Tokyo), Masato Yarita (Tokyo) and Kazuma Inoue (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An epoxy resin represented by the following formula (1), in which in a total amount of an epoxy compound represented by n=1 in the epoxy resin of the above formula, a total content of an epoxy compound represented by the following formula (2) and an epoxy compound represented by the followi...