ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,010, issued on Oct. 28, was assigned to Sumitomo Electric Industries Ltd. (Osaka, Japan).
"Cutting tool" was invented by Fumiyoshi Kobayashi (Osaka, Japan) and Anongsack Paseuth (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cutting tool, comprising a substrate and a coating, wherein the coating comprises a first layer consisting of multiple hard particles, in the first layer, NSi/(NTi+NSi) is 0.01 or more and 0.10 or less, and NC/(NC+NN) is 0.60 or more and 0.85 or less, the hard particles have a stacked structure in which first unit layers and second unit layers are stacked alternately, the ratio of the number of silicon atoms to t...