ALEXANDRIA, Va., June 19 -- United States Patent no. 12,329,840, issued on June 17, was assigned to Henkel AG & Co. KGaA (Duesseldorf, Germany).

"Agent for dyeing keratin material, containing at least two organosilicon compounds that are different from each other, at least one pigment and at least one liquid fatty component and/or a solvent" was invented by Phillip Jaiser (Langenfeld, Germany), Torsten Lechner (Langenfeld, Germany), Juergen Schoepgens (Schwalmtal, Germany), Marc Nowottny (Moenchengladbach, Germany), Carsten Mathiaszyk (Essen, Germany), Andreas Walter (Ratingen, Germany), Carolin Kruppa (Hilden, Germany) and Avni Tairi (Duisburg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "An agent...