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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 11718901 B1

PDFFull Text
Date of Patent:
Aug. 08, 2023

Filed:

May. 17, 2017

Method for producing coated magnetic powder, method for producing dust core, and method for producing electromagnetic component

Applicants:

Sumitomo Electric Industries, Ltd., Osaka, JP;

Sumitomo Electric Sintered Alloy, Ltd., Takahashi, JP;

Inventors:

Asako Watanabe, Itami, JP;

Tomoyuki Ueno, Itami, JP;

Assignees:

SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;

SUMITOMO ELECTRIC SINTERED ALLOY, LTD., Takahashi, JP;

Attorney:

Xsensus LLP

Primary Examiner:

Vanessa T Luk

Int. Cl.
CPC ...
C22C 38/02 (2006.01); H01F 1/26 (2006.01); H01F 41/02 (2006.01); B22F 1/102 (2022.01); B22F 1/16 (2022.01); C22C 38/06 (2006.01); H01F 1/147 (2006.01); B22F 3/02 (2006.01); B22F 3/24 (2006.01); H01F 41/04 (2006.01);
U.S. Cl.
CPC ...
C22C 38/02 (2013.01); B22F 1/102 (2022.01); B22F 1/16 (2022.01); B22F 3/02 (2013.01); B22F 3/24 (2013.01); C22C 38/06 (2013.01); H01F 1/14766 (2013.01); H01F 1/14791 (2013.01); H01F 1/26 (2013.01); H01F 41/02 (2013.01); H01F 41/0246 (2013.01); H01F 41/04 (2013.01); B22F 2003/248 (2013.01); B22F 2301/35 (2013.01); B22F 2998/10 (2013.01); C22C 2202/02 (2013.01);
Abstract

A method for producing a coated magnetic powder in which particle surfaces of a soft magnetic powder are coated with a silicone resin includes a preparation step of preparing a silicone emulsion by mixing a silicone resin with water containing a surfactant and dispersing the silicone resin in the water, an application step of applying the silicone emulsion onto particle surfaces of a soft magnetic powder, and a drying step of drying the soft magnetic powder after the silicone emulsion is applied.

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