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:
Jan. 27, 2026
Filed:
Apr. 16, 2024
Sumitomo Electric Hardmetal Corp., Itami, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
A cutting tool comprising a rake face and a flank face, the cutting tool being composed of a substrate and a coating provided on the substrate, the coating including a MAlN layer, the MAlN layer including crystal grains of MAlN in the cubic crystal system, in the MAlN, a metal element M having an atomic ratio x of 0.2 or more and 0.8 or less, in the MAlN layer, M representing a metal element including titanium, chromium, or both, nbeing 3 or less, where nrepresents a number of voids at the rake face in the MAlN layer per 50 μm in length in a cross section of the MAlN layer obtained when the MAlN layer is cut along a plane including a normal to the rake face, the void having an area in cross section of 1.0×10μmor more and 0.5 μmor less.