ALEXANDRIA, Va., July 23 -- United States Patent no. 12,364,659, issued on July 22, was assigned to WELLA INTERNATIONAL OPERATIONS SWITZERLAND SARL (Petit-Lancy, Switzerland).

"Multicomponent in situ coloration composition" was invented by Mathias Kurt Herrlein (Kronberg am Taunus, Germany), Graham Neil McKelvey (Glastutten-Hesse, Germany), Simon Paul Godfrey (Oberursel, Germany), Matija Crne (Wiesbaden, Germany), Andrej Gross (Darmstradt, Germany), Malte Bernd Hermann Afflerbach (Darmstadt, Germany) and Corinne Mohr (Lorsch, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A multicomponent composition for coloration of materials such as keratin fibers, keratin material, keratin textiles including but ...