ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,920, issued on Oct. 14, was assigned to KOYO SEALING TECHNO Co. LTD. (Itano-gun, Japan) and JTEKT Corp. (Kariya, Japan).
"Seal rubber composition and sealing member" was invented by Katsuhiko Kusunoki (Itano-gun, Japan) and Fumiaki Kasahara (Kashiwara, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A seal rubber composition contains a carboxyl group-containing acrylic rubber, silica, and two or more inorganic fibers, an amount of the silica per 100 parts by weight of the carboxyl group-containing acrylic rubber is 25 to 100 parts by weight, and a total amount of the inorganic fibers per 100 parts by weight of the carboxyl group-containing acry...