ALEXANDRIA, Va., July 23 -- United States Patent no. 12,364,660, issued on July 22, was assigned to WELLA GERMANY GMBH (Darmstadt, Germany) and Wella International Operations Switzerland (Petit Lancy, Switzerland).
"Granulated hair dye composition" was invented by Stephanie Sitterberg-Muehlthau (Kelkheim, Germany), David Sarro (Frankfurt am Main, Germany), Dominik Hess (Darmstadt, Germany) and Franziska Eekhoff (Solingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "It is provided a granulated hair dye composition, a poultice obtained with it, a method for preparing it and a method for dyeing thereof. The granulated hair dye composition comprises a natural hair dyeing agent, a natural thickening ag...