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. 25, 2025
Filed:
Jan. 23, 2024
Sumitomo Electric Industries, Ltd., Osaka, JP;
Haruko Harada, Osaka, JP;
Fumiyoshi Kobayashi, Osaka, JP;
Anongsack Paseuth, Osaka, JP;
Kosuke Tominaga, Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A cutting tool is a cutting tool including: a base; and a coating disposed on the base, wherein the coating includes a first layer, wherein the first layer is composed of α-AlO, a thickness of the first layer is 2 μm or more and 15 μm or less, on a cross section along a normal line of an interface between the base and the coating, a ratio N2/N1 is 0.60 or more, and on the cross section along the normal line of the interface between the base and the coating, a ratio N4/N3 and the ratio N2/N1 satisfy a relationship of a Formula 1.