ALEXANDRIA, Va., June 12 -- United States Patent no. 12,295,618, issued on May 13, was assigned to HydraFacial LLC (Long Beach, Calif.).

"Skin treatment tool applicator tip" was invented by Ed F. Nicolas (Signal Hill, Calif.) and William Cohen (Los Alamitos, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is an applicator tip for a hand piece assembly used in dermal abrasion procedures, the applicator tip having a cap shape with a plurality of apertures that form ports communicating with a fluid supply line in the hand piece assembly and a vacuum source to remove the abrading fluid. The fluid is introduced onto the outer abrading surface of the applicator tip through a first centr...