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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 11276516 B1

PDFFull Text
Date of Patent:
Mar. 15, 2022

Filed:

Oct. 26, 2017

Magnetic powder for high-frequency applications and magnetic resin composition containing same

Applicant:

Sanyo Special Steel Co., Ltd., Himeji, JP;

Inventors:

Toshiyuki Sawada, Himeji, JP;

Kodai Miura, Himeji, JP;

Assignee:

Sanyo Special Steel Co., Ltd., Himeji, JP;

Attorney:

The Webb Law Firm

Primary Examiner:

Xiaowei Su

Int. Cl.
CPC ...
H01F 1/147 (2006.01); B22F 1/00 (2006.01); C08K 3/08 (2006.01); C22C 30/00 (2006.01); C22C 38/00 (2006.01); C22C 38/44 (2006.01); C22C 38/46 (2006.01); C22C 38/48 (2006.01); C22C 38/50 (2006.01); C22C 38/52 (2006.01); C22C 38/58 (2006.01);
U.S. Cl.
CPC ...
H01F 1/14733 (2013.01); B22F 1/0059 (2013.01); C08K 3/08 (2013.01); C22C 30/00 (2013.01); C22C 38/00 (2013.01); C22C 38/002 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/52 (2013.01); C22C 38/58 (2013.01); H01F 1/14758 (2013.01); B22F 2301/35 (2013.01); B22F 2998/10 (2013.01); C08K 2003/0856 (2013.01); C08K 2201/01 (2013.01); C22C 2202/02 (2013.01);
Abstract

There is provided a magnetic powder for high frequency use including, in percent by mass, 0.2 to 5.0% C and at least one selected from Group IV to VI elements, Mn, and Ni in a total of 0.1 to 30%, the balance being Fe or/and Co, inclusive 0% for Co), and incidental impurities, wherein the saturation magnetization exceeds 1.0 T and satisfies Expression (1): Co%/(Co%+Fe%)≤0.50. According to the magnetic powder, there is provided a metal magnetic powder having a saturation magnetization exceeding 1.0 T and also having a high FR of 200 MHz or more and a magnetic resin composition including the metal magnetic powder.

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