ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,390,862, issued on Aug. 19, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).
"Cemented carbide and cutting tool" was invented by Yoshihiro Kimura (Osaka, Japan), Yasuki Kido (Osaka, Japan) and Anongsack Paseuth (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cemented carbide comprising a plurality of tungsten carbide particles and a binder phase, wherein the cemented carbide comprises at least one first element selected from the group consisting of titanium, tantalum, niobium, zirconium, cerium, yttrium, and boron, and wherein in a first graph in a coordinate system where an X axis is a distance from a position at which c...