ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,030, issued on Nov. 4, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Copolymer" was invented by Tatsuya Funaoka (Osaka, Japan), Ryouichi Yano (Osaka, Japan) and Manabu Fujisawa (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a copolymer consisting essentially of ethylene units, tetrafluoroethylene units, and hexafluoropropylene units, wherein a molar ratio (Et units/TFE units) of the ethylene (Et) units to the tetrafluoroethylene (TFE) units is 52.0/48.0 to 56.0/44.0, and a content of the hexafluoropropylene units is 19.0 to 21.0 mol % based on the total monomer units constituting the copolymer."
The patent was fil...