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:
Aug. 16, 2016
Filed:
Aug. 24, 2012
Applicants:
Yuh Ishida, Itami, JP;
Hitoshi Sumiya, Itami, JP;
Inventors:
Yuh Ishida, Itami, JP;
Hitoshi Sumiya, Itami, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 3/14 (2006.01); C04B 35/5831 (2006.01); C04B 35/645 (2006.01);
U.S. Cl.
CPC ...
C09K 3/1418 (2013.01); C04B 35/5831 (2013.01); C04B 35/6455 (2013.01); C04B 2235/5292 (2013.01); C04B 2235/72 (2013.01); C04B 2235/767 (2013.01); C04B 2235/781 (2013.01); C04B 2235/788 (2013.01); C04B 2235/96 (2013.01);
Abstract
A cubic boron nitride complex polycrystal contains granular cubic boron nitride and tabular cubic boron nitride. The average grain size of the granular cubic boron nitride is 500 nm or less. The maximum value of a short side of the tabular cubic boron nitride is 10 nm or more to 10000 nm or less. Thereby, it is possible to provide a cubic boron nitride complex polycrystal having high hardness and a manufacturing method therefor, a cutting tool, a wire-drawing die and a grinding tool including the same.