ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,541, issued on Dec. 16, was assigned to RHODIA OPERATIONS (Lyons, France).

"Liquid dispersion and powder of cerium based core-shell particles, process for producing the same and uses thereof in polishing" was invented by Marie Plissonneau (Lyons, France), Reka Toth (Saint-Genis-Laval, France), Thierry Le Mercier (Rosny-sous-Bois, France), Valerie Buissette (Paris) and Lauriane D'Alencon (Issy-les-Moulineaux, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to cerium based core-shell particles having a core of cerium oxide optionally doped with at least one metal (M) and a shell consisting of a plurality of nanoparticles of...