logo

For the Inventor, By the Inventor

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 12534377 B1

PDFFull Text
Date of Patent:
Jan. 27, 2026

Filed:

Mar. 24, 2021

Carbon-containing alumina powder, resin composition, heat dissipation component, and method for producing carbon-containing alumina powder

Applicant:

Denka Company Limited, Tokyo, JP;

Inventors:

Takafumi Komaki, Tokyo, JP;

Junya Nitta, Tokyo, JP;

Yoshiaki Okamoto, Tokyo, JP;

Masakazu Hirata, Tokyo, JP;

Genta Karino, Tokyo, JP;

Assignee:

DENKA COMPANY LIMITED, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

Stefanie J Cohen

Int. Cl.
CPC ...
C01F 7/00 (2022.01); C01F 7/02 (2022.01); C08K 3/22 (2006.01); H05K 7/20 (2006.01);
U.S. Cl.
CPC ...
C01F 7/02 (2013.01); C08K 3/22 (2013.01); C01P 2004/32 (2013.01); C01P 2006/12 (2013.01); C01P 2006/80 (2013.01); C08K 2003/2227 (2013.01); H05K 7/2039 (2013.01);
Abstract

A carbon-containing alumina powder containing a carbon-containing alumina particle having a projected area equivalent circle diameter of 1 μm or more and 100 μm or less as determined by microscopy, wherein an average sphericity of the carbon-containing alumina particle is 0.85 or more, and a specific surface area is 0.05 m/g or more and 1.0 m/g or less, and a ratio B/A of a carbon content ratio B to a carbon content ratio A in the carbon-containing alumina powder calculated by using a specific measurement method is 0.20 or more and 0.90 or less.

Find Patent Forward Citations

Komaki, Takafumi. (2026). Carbon-containing alumina powder, resin composition, heat dissipation component, and method for producing carbon-containing alumina powder (U.S. Patent No. 12534377). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12534377

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

Loading…