ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,579, issued on July 28, was assigned to NTK CUTTING TOOLS Co. LTD. (Komaki, Japan).
"Sintered body and cutting tool" was invented by Yoshito Kojima (Nagoya, Japan), Kentaro Yamamoto (Nagoya, Japan) and Ryoji Toyoda (Nagoya, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sintered body and cutting tool, the sintered body (2) including: a first hard particle (10) containing TiCN; a second hard particle (20) containing (Ti, M) (C, N); a third hard particle (30) including a core portion (31) containing TiCN, and a peripheral portion (32) enclosing the core portion (31) and containing (Ti, M) (C, N) each as main components; a particle (40) contain...