US Patent Issued to SUMITOMO ELECTRIC HARDMETAL on April 8 for "Cutting tool" (Japanese Inventors)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,102, issued on April 8, was assigned to SUMITOMO ELECTRIC HARDMETAL CORP. (Itami, Japan).

"Cutting tool" was invented by Susumu Okuno (Itami, Japan), Takato Yamanishi (Itami, Japan), Masahito Hikiji (Itami, Japan) and Fumiyoshi Kobayashi (Itami, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cutting tool comprises a substrate and a coating provided on the substrate, the coating including a first alumina layer provided on the substrate, a titanium compound layer provided directly on the first alumina layer, and a second alumina layer provided directly on the titanium compound layer, in which a portion adjacent to the titanium compound layer i...