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:
May. 07, 2024
Filed:
Feb. 15, 2019
Proterial, Ltd., Tokyo, JP;
Shuho Koseki, Tokyo, JP;
Daiki Shinno, Tokyo, JP;
Proterial, Ltd., Tokyo, JP;
Abstract
A covering member has a hard film on the surface of a base material, wherein the hard film comprises a layer A selected from a nitride, a carbonitride, an oxynitride, and an oxycarbonitride of Cr or CrM; a metal layer which is formed on the outer surface side of the A layer and includes Cr, Ti, or W; and a layer B which is formed on the outer surface side of the metal layer and selected from a nitride, a carbonitride, an oxynitride, and an oxycarbonitride of Cr or CrM, and wherein M is one or two or more from a Group 4 metal, a Group 5 metal, a Group 6 metal of the periodic table, Al, Si, and B, and strain is introduced in the outer surface side of the metal layer.