US Patent Issued to KYOCERA on Oct. 28 for "Coated tool" (Japanese Inventor)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,012, issued on Oct. 28, was assigned to KYOCERA Corp. (Kyoto, Japan).

"Coated tool" was invented by Hirotoshi Ito (Satsumasendai, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coated tool includes a base and a coating film on the base. The coating film includes an Al2O3 layer, and a surface layer on the Al2O3 layer. The surface layer has a first erosion rate of 0.1 micro metre/min or less. The first erosion rate is obtained from measurement by causing a liquid A, in which 3 mass % of amorphous Al2O3 particles having a mean particle diameter of 1.1-1.3 micro metre is dispersed in purified water, to collide with the surface layer. The surface...