ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,383,478, issued on Aug. 12, was assigned to KAO Corp. (Tokyo).
"Cosmetic product for dyeing keratin fibers" was invented by Bernd Nocker (Darmstadt, Germany), Ines Rabelo De Moraes (Darmstadt, Germany), Peter Bauer (Darmstadt, Germany) and Steven Breakspear (Darmstadt, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cosmetic product, containing a composition A including one or more alkalizing agents, an aqueous composition B having a pH in a range of 1 to 6 and containing one or more oxidizing agents, and a composition C containing one or more compounds selected from the following groups: 1) where R1, R2, and R3 are independently selected from ...