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:
Sep. 30, 2025
Filed:
Aug. 04, 2020
Applicant:
Sumitomo Electric Hardmetal Corp., Hyogo, JP;
Inventors:
Assignee:
SUMITOMO ELECTRIC HARDMETAL CORP., Hyogo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23B 27/20 (2006.01); B23P 15/28 (2006.01);
U.S. Cl.
CPC ...
B23B 27/20 (2013.01); B23P 15/28 (2013.01); B23B 2226/315 (2013.01); B23C 2226/315 (2013.01); Y10T 428/30 (2015.01);
Abstract
There is provided a diamond cutting tool including a cutting edge portion containing single crystal diamond or binderless polycrystalline diamond and graphite, wherein when Raman spectroscopy is performed on a surface of the cutting edge portion, a ratio R1 of Ig1 to a sum of Id1 and the Ig1 is equal to or more than 0.5 and equal to or less than 1, where the Id1 represents a peak intensity of first carbon in the surface, the Ig1 represents a peak intensity of second carbon in the surface, the first carbon represents carbon that forms the single crystal diamond or the binderless polycrystalline diamond.