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:
Aug. 12, 2025
Filed:
Feb. 04, 2021
Applicant:
Tokuyama Corporation, Shunan, JP;
Inventors:
Assignee:
Tokuyama Corporation, Shunan, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 21/072 (2006.01);
U.S. Cl.
CPC ...
C01B 21/0726 (2013.01); C01P 2004/32 (2013.01); C01P 2004/50 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2006/12 (2013.01);
Abstract
Provided is an aluminum nitride powder useful as a raw material when an aluminum nitride sintered body excellent as an insulating high thermal conductive member is manufactured, particularly, by press molding. An aluminum nitride powder includes particles having a sphericity of 0.8 or more, in which a median size Dobtained by a laser diffraction method is 0.5 to 1.5 μm, a ratio D/Dof a particle size Dcorresponding to a cumulative undersize distribution of 90% to the Dis 2.2 or less, a BET specific surface area is 2 to 4 m/g, and a total oxygen concentration is 0.6 to 1.2% by mass.