US Patent Issued to The Procter & Gamble on Feb. 17 for "Laundry detergent composition containing dye fixative and amine oxide" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,012, issued on Feb. 17, was assigned to The Procter & Gamble Co. (Cincinnati).

"Laundry detergent composition containing dye fixative and amine oxide" was invented by Ming Tang (Beijing), Peng Qin (Beijing) and Qian Gao (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A laundry detergent composition including from 0.01% to 10%, by weight of the composition, of a dye fixative wherein said dye fixative is selected from the group consisting of reaction products of polyamines with cyanamides and acids, reaction products of cyanamides with aldehydes and ammonium salts, reaction products of cyanamides with aldehydes and amines, or reaction products...