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:
Jan. 29, 2019
Filed:
Jun. 22, 2017
Applicant:
Ngk Insulators, Ltd., Nagoya, Aichi-prefecture, JP;
Inventors:
Suguru Noguchi, Nagoya, JP;
Shuhei Higashihara, Nagoya, JP;
Takayuki Hirao, Nagoya, JP;
Tetsuya Uchikawa, Nagoya, JP;
Assignee:
NGK INSULATORS, LTD., Aichi-prefecture, JP;
Primary Examiner:
Int. Cl.
CPC ...
C30B 19/06 (2006.01); C30B 23/00 (2006.01); C07F 5/00 (2006.01); C30B 23/02 (2006.01); C30B 23/06 (2006.01); C30B 19/02 (2006.01); C30B 29/40 (2006.01);
U.S. Cl.
CPC ...
C30B 23/005 (2013.01); C07F 5/00 (2013.01); C30B 19/02 (2013.01); C30B 23/025 (2013.01); C30B 23/06 (2013.01); C30B 29/406 (2013.01);
Abstract
A group 13 element source, a flux comprising at least one of an alkali metal and an alkaline earth metal, and an additive being liquid at an ambient temperature are placed in a crystal growing vessel. The crystal growing vessel is heated and pressurized under a nitrogen atom-containing gas atmosphere to form a melt containing the group 13 element source, the flux and the additive. Evaporation of the additive is prevented until the flux is melted. The crystal of the nitride of the group 13 element is then grown in the melt.