US Patent Issued to SUMITOMO ELECTRIC HARDMETAL, SUMITOMO ELECTRIC INDUSTRIES on Sept. 9 for "Cemented carbide and cutting tool" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,498, issued on Sept. 9, was assigned to SUMITOMO ELECTRIC HARDMETAL CORP. (Itami, Japan) and SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).

"Cemented carbide and cutting tool" was invented by Yasuki Kido (Itami, Japan), Yoshihiro Kimura (Osaka, Japan), Atsuhiro Yoneda (Itami, Japan), Yuki Tanaka (Itami, Japan) and Keiichi Tsuda (Itami, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cemented carbide consists of a first hard phase, second hard phases, and a binder phase, wherein the first hard phase is composed of tungsten carbide grains, a D10 and a D90 of grain sizes of the tungsten carbide grains are 0.40 micro metre or more and 2.00 mi...