ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,560, issued on Dec. 23, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Method for producing fluoropolymer powder" was invented by Chiaki Okui (Osaka, Japan), Hirotoshi Yoshida (Osaka, Japan), Hiroyuki Sato (Osaka, Japan), Kenji Ichikawa (Osaka, Japan), Taketo Kato (Osaka, Japan) and Taku Yamanaka (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a fluoropolymer powder including (A1) adding, to a fluoropolymer aqueous dispersion obtained by polymerization using a carboxylic acid type hydrocarbon surfactant, and an acid to adjust a pH to 4.0 or less and cause coagulation to thereby obtain a wet fluoropolymer ...