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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.:

US 11078080 B1

PDFFull Text
Date of Patent:
Aug. 03, 2021

Filed:

Jun. 12, 2019

Hexagonal boron nitride powder and method for producing the same, and composition and heat dissipation material using the same

Applicant:

Showa Denko K.k., Tokyo, JP;

Inventors:

Boanerges Thendie, Shiojiri, JP;

Masaru Fukasawa, Shiojiri, JP;

Assignee:

SHOWA DENKO K.K., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Colin W Slifka

Int. Cl.
CPC ...
C01B 21/064 (2006.01);
U.S. Cl.
CPC ...
C01B 21/0648 (2013.01); C01P 2002/74 (2013.01); C01P 2004/30 (2013.01); C01P 2004/51 (2013.01); C01P 2004/61 (2013.01); C01P 2006/12 (2013.01); C01P 2006/16 (2013.01); C01P 2006/32 (2013.01);
Abstract

A hexagonal BN powder including aggregates of primary particles of hexagonal BN containing boron and oxygen as impurity elements at a content of 1.00 to 30.00% and 0 to 1.00% by mass, respectively, which has a peak A in a predetermined particle diameter range and a 50% volume cumulative particle diameter D(d1) of 30.0 to 200.0 μl in a particle size distribution curve, and in which a ratio of a height (a1) of the peak A before treatment to a height (a2) of the peak A after treatment is 0.80 to 1.00 and a ratio of D(d1) before treatment to D(d2) after treatment is 0.80 to 1.00 when the hexagonal BN powder is ultrasonically treated under a predetermined condition for 1 minute. Also disclosed is a method for producing the hexagonal BN powder, a composition and a heat dissipation material.

Find Patent Forward Citations

Thendie, Boanerges. (2021). Hexagonal boron nitride powder and method for producing the same, and composition and heat dissipation material using the same (U.S. Patent No. 11078080). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11078080

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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