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:
Feb. 04, 2025
Filed:
Sep. 14, 2018
Sumitomo Electric Industries, Ltd., Osaka, JP;
Sumitomo Electric Hardmetal Corp., Itami, JP;
Natsuo Tatsumi, Osaka, JP;
Yoshiki Nishibayashi, Osaka, JP;
Takuya Nohara, Itami, JP;
Akihiko Ueda, Itami, JP;
Yutaka Kobayashi, Itami, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
SUMITOMO ELECTRIC HARDMETAL CORP., Itami, JP;
Abstract
A single-crystal diamond includes n types of regions different in total concentration of an impurity, the n types of regions being observed in an observed surface being in parallel to a (110) face. Each of the n types of regions has an area not smaller than 0.1 μm. At least one of a first line, a second line, and a third line on the observed surface crosses a boundary between the n types of regions at least four times. The first line, the second line, and the third line are in parallel to a <−110> direction and have a length of 1 mm. A midpoint of the first line corresponds to the center of gravity of the observed surface. The second line and the third line are distant from the first line by 300 μm in a <001> direction and a <00−1> direction, respectively.