ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,428, issued on Nov. 18, was assigned to Nippon Kayaku K.K. (Tokyo).

"Epoxy resin mixture, epoxy resin composition and cured product of same" was invented by Yusuke Kawano (Tokyo) and Masataka Nakanishi (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An epoxy resin mixture which contains an epoxy resin represented by Formula (1) below and an epoxy resin represented by Formula (2) below at a weight ratio of 1:5 to 1:0.2. (In Formula (1), plural R1's each exist independently and represent a hydrogen atom or a C1-10 alkyl group, n represent a real number of 1 to 10, and G represents a substituted or unsubstituted glycidyl group.) (In Formula (2), ...