US Patent Issued to Mahle International on Aug. 11 for "Coating for a piston ring" (Brazilian, American Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,704,177, issued on Aug. 11, was assigned to Mahle International GmbH (Germany).

"Coating for a piston ring" was invented by Fabio Mendes de Araujo (Waterford, Mich.), Luiz Felipe Viegas Rosa Rezende (Itajuba, Brazil), Nikhil Nachappa Tychodianda Kushalappa (Bloomfield Hills, Mich.) and Samuel Jose Muniz De Toledo (Itajuba, Brazil).

According to the abstract* released by the U.S. Patent & Trademark Office: "A piston ring and method of forming includes a base portion formed of a metallic material, an outer contact surface and an inner contact surface extending between a first face and a second face that is opposite the first face of the piston ring, a chromium coating layer on the seco...