ALEXANDRIA, Va., April 2 -- United States Patent no. 12,264,218, issued on April 1, was assigned to MITSUBISHI GAS CHEMICAL COMPANY INC. (Tokyo).
"Polycarbonate resin" was invented by Toshihito Goto (Ibaraki, Japan) and Noriyoshi Ogawa (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a polycarbonate resin having excellent solubility in low-boiling-point non-halogenated solvents and having a high glass transition temperature. The polycarbonate resin includes constituent units (A) represented by general formula (1) (for example 4,4'-(4-methylpentane-2,2-diyl)diphenol) and constituent units (B) represented by general formula (2) (for example 4,4'-(1-phenylethane-1,1-diyl)diphenol), the...