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:
Apr. 05, 2022
Filed:
Jan. 16, 2017
Osg Corporation, Toyokawa, JP;
Hiroyuki Hanyu, Toyokawa, JP;
Yasuo Fukui, Toyokawa, JP;
OSG CORPORATION, Toyokawa, JP;
Abstract
To provide a tool that ensures improved durability even when a diamond coating containing boron is formed. A diamond coating () includes a first layer () that is formed as a layer on a surface layer side of the diamond coating () and is regarded as containing no boron, and a second layer () positioned on a side of a base material () with respect to the first layer () and contains at least 1000 ppm or more of the boron. Since the first layer () with a larger compressive stress is formed on the surface layer of the diamond coating (), a crack generation from the surface layer side of the diamond coating () during the process can be reduced. Consequently, the durability of a tool () can be improved even when the diamond coating () containing 1,000 ppm or more of boron is formed.