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. 28, 2021
Filed:
Sep. 18, 2019
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Hardmetal Corp., Itami, JP;
Katsumi Okamura, Osaka, JP;
Yuichiro Watanabe, Osaka, JP;
Akito Ishii, Osaka, JP;
Takashi Harada, Osaka, JP;
Satoru Kukino, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
Provided is a cubic boron nitride sintered body including more than or equal to 85 volume percent and less than 100 volume percent of cubic boron nitride particles, and a remainder of a binder, wherein the binder contains WC, Co, and an Al compound, the binder contains WCoB, and, when Irepresents an X-ray diffraction intensity of a (111) plane of the cubic boron nitride particles, Irepresents an X-ray diffraction intensity of a (100) plane of the WC, and Irepresents an X-ray diffraction intensity of a (420) plane of the WCoB, a ratio I/Iof the Ito the Iis more than 0 and less than 0.10, and a ratio I/Iof the Ito the Iis more than 0 and less than 0.40.