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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 10872716 B1

PDFFull Text
Date of Patent:
Dec. 22, 2020

Filed:

Nov. 09, 2015

Soft magnetic flaky powder and method for producing the same

Applicant:

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

Inventors:

Fumihiro Maezawa, Himeji, JP;

Toshiyuki Sawada, Himeji, JP;

Assignee:

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

Attorney:

The Webb Law Firm

Primary Examiner:

Jessee R Roe

Assistant Examiner:

Rebecca Janssen

Int. Cl.
CPC ...
H01F 1/147 (2006.01); B22F 1/00 (2006.01); B22F 9/08 (2006.01); C21D 6/00 (2006.01); C22C 38/02 (2006.01); C22C 38/18 (2006.01); H01F 41/02 (2006.01); C22C 38/34 (2006.01); B22F 9/04 (2006.01);
U.S. Cl.
CPC ...
H01F 1/14775 (2013.01); B22F 1/0055 (2013.01); B22F 9/04 (2013.01); B22F 9/082 (2013.01); C21D 6/002 (2013.01); C21D 6/008 (2013.01); C22C 38/02 (2013.01); C22C 38/18 (2013.01); C22C 38/34 (2013.01); H01F 1/14766 (2013.01); H01F 41/02 (2013.01); B22F 2998/10 (2013.01); C22C 2202/02 (2013.01); H01F 1/147 (2013.01);
Abstract

In order to provide a soft magnetic flaky powder that is used primarily in a member for an RFID and that has the high real part μ' of a magnetic permeability and the low imaginary part μ″ of the magnetic permeability even when having an average particle diameter of 30 μm or more, and a method for producing the soft magnetic flaky powder, the present invention provides a soft magnetic flaky powder obtained by flattening-treatment of a soft magnetic powder, in which an average particle diameter is more than 30 μm, a coercive force measured by applying a magnetic field in the longitudinal direction of the flaky powder is in a range of 240 to 640 A/m, a saturation magnetization is 1.0 T or more, and an aspect ratio is 30 or more, and a method for producing the soft magnetic flaky powder.

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