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:
Nov. 14, 2023
Filed:
Oct. 01, 2018
Diamond polycrystal, tool including diamond polycrystal, and method of producing diamond polycrystal
Applicant:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Inventors:
Hitoshi Sumiya, Osaka, JP;
Katsuko Yamamoto, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
C01B 32/25 (2017.01); C01B 32/26 (2017.01); B23B 27/20 (2006.01);
U.S. Cl.
CPC ...
C01B 32/26 (2017.08); B23B 27/20 (2013.01); C01B 32/25 (2017.08); C01P 2002/60 (2013.01); C01P 2002/76 (2013.01); C01P 2006/90 (2013.01);
Abstract
A diamond polycrystal includes diamond grains, the diamond polycrystal including a cubic diamond and a 6H type hexagonal diamond, wherein the cubic diamond and the 6H type hexagonal diamond exist in the same or different diamond grains, and a ratio Ab/Abis more than or equal to 0.4 and less than or equal to 1, Abrepresenting a maximum value of absorption in a range of more than or equal to 1200 cmand less than or equal to 1300 cmin an infrared absorption spectrum, Abrepresenting a maximum value of absorption in a range of more than or equal to 1900 cmand less than or equal to 2100 cm.