The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2025
Filed:
Jul. 13, 2023
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A cutting tool comprising a base material and a coating disposed on the base material, wherein the coating comprises a hard particle layer, the hard particle layer is formed from a plurality of hard particles consisting of titanium, silicon, carbon, and nitrogen, the hard particle layer comprises a first region and a second region, a composition of the first region is TiSiCN, a composition of the second region is TiSiCN, the Xs and the Xb satisfy relationships of Xb−Xs≥0.01 and 0<Xs<Xb≤0.10, the hard particles have a cubic crystal structure, and in the hard particles, a concentration of the silicon changes periodically along a first direction going from the first main surface to the second main surface.