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:
Dec. 31, 2019
Filed:
Jan. 18, 2016
Applicant:
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Inventors:
Yuh Ishida, Itami, JP;
Keiko Arimoto, Itami, JP;
Katsuko Yamamoto, Itami, JP;
Hitoshi Sumiya, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C04B 35/5831 (2006.01); B23B 27/14 (2006.01); B23B 51/00 (2006.01); B23C 5/16 (2006.01); B23B 27/20 (2006.01); C04B 35/583 (2006.01); C04B 35/645 (2006.01);
U.S. Cl.
CPC ...
C04B 35/5831 (2013.01); B23B 27/14 (2013.01); B23B 27/20 (2013.01); B23B 51/00 (2013.01); B23C 5/16 (2013.01); C04B 35/583 (2013.01); C04B 35/645 (2013.01); B23B 2226/125 (2013.01); B23B 2228/00 (2013.01); C04B 2235/386 (2013.01); C04B 2235/5445 (2013.01); C04B 2235/5454 (2013.01); C04B 2235/781 (2013.01); C04B 2235/785 (2013.01); C04B 2235/96 (2013.01);
Abstract
A cubic boron nitride polycrystal includes cubic boron nitride, the cubic boron nitride having an average grain size of not more than 150 nm, the cubic boron nitride polycrystal having a crack generation load of not less than 25 N in a breaking strength test in which an R200 μm diamond indenter is used to apply a load at a rate of 100 N/min.