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. 13, 2018
Filed:
Aug. 21, 2015
Applicant:
Mitsubishi Chemical Corporation, Tokyo, JP;
Inventors:
Yutaka Mikawa, Ibaraki, JP;
Hideo Namita, Ibaraki, JP;
Hirotaka Ikeda, Ibaraki, JP;
Kazunori Kamada, Ibaraki, JP;
Hideo Fujisawa, Ibaraki, JP;
Atsuhiko Kojima, Ibaraki, JP;
Assignee:
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C30B 29/40 (2006.01); C30B 7/10 (2006.01);
U.S. Cl.
CPC ...
C30B 29/406 (2013.01); C30B 7/105 (2013.01);
Abstract
An object of the present invention is to provide a crystal of a nitride of a Group-13 metal on the Periodic Table which has good crystallinity and has no crystal strain, and to provide a production method for the crystal. The crystal of a nitride of a Group-13 metal on the Periodic Table of the present invention, comprises oxygen atom and hydrogen atom in the crystal and has a ratio of a hydrogen concentration to an oxygen concentration therein of from 0.5 to 4.5.