US Patent Issued to SUMITOMO ELECTRIC HARDMETAL on Feb. 18 for "Cutting tool" (Japanese Inventors)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,227,836, issued on Feb. 18, was assigned to SUMITOMO ELECTRIC HARDMETAL CORP. (Itami, Japan).

"Cutting tool" was invented by Susumu Okuno (Itami, Japan), Yasuki Kido (Itami, Japan), Fumiyoshi Kobayashi (Itami, Japan) and Anongsack Paseuth (Itami, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a cutting tool including a base material and a coating layer provided on the base material, the coating layer including a titanium carbonitride layer provided on the base material, an intermediate layer provided on the titanium carbonitride layer in contact therewith, and an alumina layer provided on the intermediate layer in contact therewith, th...