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:
Sep. 23, 2025
Filed:
Mar. 25, 2020
Applicant:
Nichia Corporation, Anan, JP;
Inventor:
Hideki Yoshida, Tokushima, JP;
Assignee:
NICHIA CORPORATION, Anan, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 21/064 (2006.01);
U.S. Cl.
CPC ...
C01B 21/064 (2013.01); C01P 2002/02 (2013.01); C01P 2002/74 (2013.01); C01P 2004/03 (2013.01); C01P 2004/20 (2013.01); C01P 2004/30 (2013.01); C01P 2004/50 (2013.01);
Abstract
A method of manufacturing hexagonal boron nitride fibers includes: providing amorphous fibrous boron nitride; performing heat treatment on the amorphous fibrous boron nitride at a first temperature of 500° C. or greater and less than 900° C. in an oxygen-containing atmosphere to obtain a first heat-treated product; and performing heat treatment on the first heat-treated product at a second temperature in a range of 1000° C. to 1800° C. in a nitrogen-containing atmosphere to obtain a second heat-treated product containing hexagonal boron nitride.