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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 11032955 B1

PDFFull Text
Date of Patent:
Jun. 08, 2021

Filed:

Apr. 05, 2017

Ferrite powder, resin composition, electromagnetic shielding material, electronic circuit substrate, electronic circuit component, and electronic device housing

Applicant:

Powdertech Co., Ltd., Chiba, JP;

Inventors:

Koji Aga, Chiba, JP;

Tetsuya Igarashi, Chiba, JP;

Assignee:

POWDERTECH CO., LTD., Chiba, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Ronak C Patel

Int. Cl.
CPC ...
H05K 9/00 (2006.01); C01G 53/00 (2006.01); C08K 3/22 (2006.01); H01F 1/34 (2006.01); H01F 1/375 (2006.01); H05K 1/02 (2006.01);
U.S. Cl.
CPC ...
H05K 9/0081 (2013.01); C01G 53/40 (2013.01); C08K 3/22 (2013.01); H01F 1/344 (2013.01); H01F 1/375 (2013.01); H05K 1/0216 (2013.01); C01P 2002/32 (2013.01); C01P 2004/03 (2013.01); C01P 2004/20 (2013.01); C01P 2004/54 (2013.01); C01P 2006/42 (2013.01); C08K 2003/2296 (2013.01); C08K 2201/003 (2013.01); C08K 2201/01 (2013.01); C08K 2201/016 (2013.01);
Abstract

The present invention provides a powdered ferrite having high dispersibility in a resin and high electromagnetic shielding characteristics. The powdered ferrite comprises platy ferrite particles having a spinel crystal structure. The powdered ferrite comprises at least 50 number % platy ferrite particles each having at least one protrusion on a surface of the particle, and the protrusion has a shape selected from the group consisting of a rectangular pyramid, a truncated rectangular pyramid, an elongated rectangular pyramid, and combinations thereof.

Find Patent Forward Citations

Aga, Koji. (2021). Ferrite powder, resin composition, electromagnetic shielding material, electronic circuit substrate, electronic circuit component, and electronic device housing (U.S. Patent No. 11032955). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11032955

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

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