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. 22, 2022
Filed:
Nov. 12, 2020
Applicant:
Adamant Namiki Precision Jewel Co., Ltd., Tokyo, JP;
Inventors:
Koji Koyama, Tokyo, JP;
Seongwoo Kim, Tokyo, JP;
Yuki Kawamata, Yuzawa, JP;
Naoki Fujita, Yuzawa, JP;
Assignee:
Adamant Namiki Precision Jewel Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 29/04 (2006.01); C30B 25/18 (2006.01); C30B 25/20 (2006.01); C01B 32/25 (2017.01);
U.S. Cl.
CPC ...
C30B 29/04 (2013.01); C01B 32/25 (2017.08); C30B 25/186 (2013.01); C30B 25/20 (2013.01);
Abstract
A diamond crystal substrate has a substrate surface that is one crystal plane among (100), (111), and (110) and that has atomic steps and terraces structure at an off-angle of 7° or less excluding 0°.