US Patent Issued to Henkel on June 30 for "Agent for oxidatively dyeing keratin fibers" (German Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,530, issued on June 30, was assigned to Henkel AG & Co. KGaA (Dusseldorf, Germany).

"Agent for oxidatively dyeing keratin fibers" was invented by Thomas Hippe (Appen, Germany), Astrid Kleen (Haseldorf, Germany), Hartmut Manneck (Barnitz, Germany), Stefan Hoepfner (Hamburg, Germany) and Tugce Cansev (Hamburg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "An agent for oxidatively dyeing keratinous fibers, in particular human hair, containing, in a cosmetic carrier, at least one oxidation dye precursor or the developer type, isatin, and at least one oxidizing agent and related systems and methods."

The patent was filed on Sept. 17, 2024, unde...