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. 30, 2018
Filed:
Jan. 08, 2015
Applicants:
Denka Company Limited, Chuo-ku, Tokyo, JP;
National University Corporation Yokohama National University, Yokohama-shi, Kanagawa, JP;
Inventors:
Junichi Tatami, Yokohama, JP;
Midori Sotokawa, Yokohama, JP;
Koki Ikarashi, Omuta, JP;
Hideki Hirotsuru, Omuta, JP;
Assignee:
Denka Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 21/064 (2006.01); C09K 5/14 (2006.01); C09D 5/32 (2006.01); C08K 3/38 (2006.01); C09D 1/00 (2006.01); C09D 183/04 (2006.01);
U.S. Cl.
CPC ...
C09K 5/14 (2013.01); C01B 21/064 (2013.01); C01B 21/0646 (2013.01); C01B 21/0648 (2013.01); C08K 3/38 (2013.01); C09D 1/00 (2013.01); C09D 5/32 (2013.01); C09D 183/04 (2013.01); C01P 2002/70 (2013.01); C01P 2004/61 (2013.01); C01P 2006/32 (2013.01); C08K 2003/385 (2013.01); C08K 2201/001 (2013.01);
Abstract
There is provided a method for producing hexagonal boron nitride, including a heating step of heating a mixture containing boron carbide and an alkaline earth metal compound under an ammonia atmosphere at 1300-1500° C. to obtain a product containing hexagonal boron nitride, wherein a molar ratio of the boron carbide to the alkaline earth metal compound in the mixture is 0.5-2.0.