US Patent Issued to SUMITOMO ELECTRIC INDUSTRIES on Aug. 18 for "Cemented carbide and cutting tool" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,709,788, issued on Aug. 18, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).

"Cemented carbide and cutting tool" was invented by Yasuki Kido (Osaka, Japan) and Katsumi Okamura (Osaka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A cemented carbide includes a hard phase and a binder phase, wherein the hard phase has first hard phase grains each composed of tungsten carbide, second hard phase grains including a core portion and a rim portion, a composition of the core portion is represented by M1x1W1-x1C1-y1Ny1, a composition of the rim portion is represented by M2x2W1-x2C1-y2Ny2, each of the M1 and M2 is at least one metal elemen...