US Patent Issued to HYDROMECANIQUE ET FROTTEMENT on Aug. 4 for "Part coated with a carbon-based layer" (French Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,556, issued on Aug. 4, was assigned to HYDROMECANIQUE ET FROTTEMENT (Andrezieux-Boutheon, France).

"Part coated with a carbon-based layer" was invented by Marie-Alix Leroy (Saint-Etienne, France) and Michael Ougier (Saint Chamond, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a metal part comprising a metallic substrate (S) having an outer surface coated with a layer of carbon-based material (M). According to the invention, the layer of carbon-based material: -is of "DLC" amorphous carbon type, from the a-C family; * comprises less than 3 at % of oxygen within the layer of carbon-based material; * does not contain hyd...