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:
Mar. 31, 2015
Filed:
Jul. 25, 2011
Katsumi Okamura, Itami, JP;
Machiko Abe, Itami, JP;
Satoru Kukino, Itami, JP;
Sumitomo Electric Hardmetal Corp., Itami-shi, JP;
Abstract
A cubic boron nitride sintered body tool has, at least at a cutting edge, a cubic boron nitride sintered body composed of a cubic boron nitride particle and a binder phase. The binder phase contains at least AlOand a Zr compound. On any straight line in the sintered body, the mean value of a continuous distance occupied by AlOis 0.1-1.0 μm, and the standard deviation of the continuous distance occupied by AlOis not more than 0.8. On the straight line, X/Y is 0.1-1 where X represents the number of points of contact between AlOand the Zr compound, and Y represents the sum of the number of points of contact between AlOand cBN and the number of points of contact between AlOand binder phase component(s) other than AlOand the Zr compound.