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:
Jun. 23, 2026
Filed:
Feb. 07, 2022
Sumitomo Electric Hardmetal Corp., Itami, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
A cutting tool comprising a base material and a coating; wherein: the coating comprises a titanium compound layer and an α-AlOlayer; the α-AlOlayer comprises a region Aand a region A; the titanium compound layer comprises a region Band a region B; an average particle diameter a1 of the α-AlOparticles in the region A, an average particle diameter a2 of the α-AlOparticles in the region A, an average particle diameter b1 of the titanium compound particles in the region B, and an average particle diameter b2 of the titanium compound particles in the region Bsatisfy relationships represented by respective expressions 1 to 3:0.80≤2/2≤1.27 Expression 11.50≤1/2≤10 Expression 21.45≤1/2≤5 Expression 3; and