ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,427, issued on May 27, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Member to be compressed for electrochemical devices" was invented by Hitoshi Imamura (Osaka, Japan), Takahisa Aoyama (Osaka, Japan), Hayato Tsuda (Osaka, Japan) and Tadaharu Isaka (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A member to be compressed for an electrochemical device, including a copolymer containing a tetrafluoroethylene unit and a fluoroalkyl vinyl ether unit, the copolymer having a content of the fluoroalkyl vinyl ether unit based on all the monomer units of the copolymer of 4.3% by mass or more and less than 5.5% by mass, and having a melt...