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:
Jul. 30, 2024
Filed:
Jun. 14, 2023
Applicant:
Panasonic Holdings Corporation, Osaka, JP;
Inventors:
Yusuke Mori, Osaka, JP;
Masashi Yoshimura, Osaka, JP;
Masayuki Imanishi, Osaka, JP;
Akira Kitamoto, Osaka, JP;
Junichi Takino, Osaka, JP;
Tomoaki Sumi, Osaka, JP;
Yoshio Okayama, Osaka, JP;
Assignee:
PANASONIC HOLDINGS CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C30B 29/40 (2006.01); C30B 25/02 (2006.01); C30B 33/08 (2006.01);
U.S. Cl.
CPC ...
C30B 29/406 (2013.01); C30B 33/08 (2013.01); C30B 25/02 (2013.01);
Abstract
A group-III nitride substrate includes: a first region having a first impurity concentration in a polished surface; and a second region having a second impurity concentration lower than the first impurity concentration in the polished surface, wherein a first dislocation density of the first region is lower than a second dislocation density of the second region.