ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,782, issued on Aug. 19, was assigned to AGC Inc. (Tokyo).

"Fluorinated copolymer composition and crosslinked rubber article" was invented by Tsuyoshi Kawai (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a fluorinated copolymer composition whereby a crosslinked rubber article having a low compression set at high temperature can be formed, and a crosslinked rubber article.The fluorinated copolymer composition of the present invention comprises a fluorinated copolymer, an organic peroxide, a compound having at least two polymerizable unsaturated bonds and a phosphorus compound having a melting point of 60deg C. or lower."

The patent ...