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:
Oct. 14, 2025
Filed:
Mar. 19, 2021
Applicant:
Hokuetsu Corporation, Nagaoka, JP;
Inventors:
Hideaki Komiyama, Nagaoka, JP;
Atsushi Tamura, Nagaoka, JP;
Assignee:
HOKUETSU CORPORATION, Nagaoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K 9/00 (2006.01); C08J 5/18 (2006.01); C08J 7/04 (2020.01); C08K 3/04 (2006.01); C08K 3/34 (2006.01);
U.S. Cl.
CPC ...
H05K 9/009 (2013.01); C08J 5/18 (2013.01); C08J 7/0427 (2020.01); C08K 3/041 (2017.05); C08K 3/042 (2017.05); C08K 3/346 (2013.01); C08J 2301/28 (2013.01);
Abstract
An electromagnetic wave noise suppression sheet having high electromagnetic wave noise suppression performance and thermal conductivity and reducing cost includes a first layer containing carbon nanotubes, an inorganic filler, and carboxymethylcellulose. The inorganic filler is at least one selected from the group consisting of graphite, carbon black, and an inorganic pigment. A ratio of a mass of the inorganic filler to a mass of the carbon nanotubes is ¼ or more and 2 or less.