ALEXANDRIA, Va., July 9 -- United States Patent no. 12,351,512, issued on July 8, was assigned to VIBRANTZ Corp. (Mayfield Heights, Ohio).

"Rare earth frits for fluorescence and methods for laser marking applications" was invented by Yasin Duman (Cousances-les-Forges, France), Joesph E. Sarver (Washington, Pa.) and Lutz Poth (Rossdorf, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Fluorescent rare earth glass frits are suitable for laser marking. A marking composition including fluorescent glass frits is disclosed that is capable of emitting fluorescence under irradiation of ultraviolet rays. A method of forming marks or indicia on a substrate using the fluorescent rare earth glass frits is also dis...