ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,797, issued on Aug. 19, was assigned to DAIKIN INDUSTRIES LTD. (Osaka, Japan).
"Fluoropolyether group containing compound and method for producing the same" was invented by Kentarou Hiraga (Osaka, Japan), Akinari Sugiyama (Osaka, Japan), Fumihiko Yamaguchi (Osaka, Japan), Takashi Nomura (Osaka, Japan), Shouta Shibutani (Osaka, Japan) and Shingo Okuno (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A fluoropolyether-containing compound of the following formula (1a): Ra-R2-R1-Rb (1a) wherein the symbols are as defined in the specification. Also disclosed is a fluoropolyether-containing compound of the following formula (1b): Ra-R2'-R1-Rb ...