US Patent Issued to RIKEN, ZEON, THE YOKOHAMA RUBBER on Sept. 15 for "Method for producing chain unsaturated carboxylic acid compound using phenylalanine ammonia layse" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,693, issued on Sept. 15, was assigned to RIKEN (Wako, Japan), ZEON Corp. (Tokyo) and THE YOKOHAMA RUBBER Co. LTD. (Hiratsuka, Japan).

"Method for producing chain unsaturated carboxylic acid compound using phenylalanine ammonia layse" was invented by Tomokazu Shirai (Wako, Japan), Yutaro Mori (Wako, Japan), Yoshihide Yachi (Tokyo), Misao Hiza (Hiratsuka, Japan) and Yayoi Akahori (Hiratsuka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a chain-shaped unsaturated carboxylic acid compound or a geometric isomer thereof, having at least two carbon-carbon double bonds, including the steps of: removing, from a chain-shaped un...