US Patent Issued to DAIKIN INDUSTRIES on Oct. 27 for "Fluorine-containing copolymer" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,774,355, issued on Oct. 27, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).

"Fluorine-containing copolymer" was invented by Tadaharu Isaka (Osaka, Japan), Yukari Yamamoto (Osaka, Japan) and Yumi Zenke (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit, and a perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of the hexafluoropropylene unit of 4.10 to 5.20 mol % with respect to the whole of the monomer units, a content of the perfluoro(propyl vinyl ether) unit of 0.53 to 0.86 mol % with respect to the whole...