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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 12746712 B1

PDFFull Text
Date of Patent:
Sep. 29, 2026

Filed:

Jan. 22, 2025

Manufacturing method of coil component and coil component

Applicant:

Sumida Corporation, Tokyo, JP;

Inventors:

Motomi Takahashi, Natori City, JP;

Tomohiro Kajiyama, Natori City, JP;

Teruaki Tanaka, Natori City, JP;

Shinichi Sakamoto, Natori City, JP;

Juichi Oki, Natori City, JP;

Mitsugu Kawarai, Natori City, JP;

Tsutomu Otsuka, Natori City, JP;

Assignee:

SUMIDA CORPORATION, Tokyo, JP;

Attorney:

CANTOR COLBURN LLP

Primary Examiner:

Andrew D Graham

Int. Cl.
CPC ...
B29C 43/18 (2006.01); B22F 1/08 (2022.01); B22F 1/10 (2022.01); B29C 43/00 (2006.01); B29C 43/52 (2006.01); H01F 17/04 (2006.01); H01F 27/28 (2006.01); H01F 27/29 (2006.01); H01F 41/00 (2006.01); H01F 41/02 (2006.01); H01F 41/061 (2016.01); H01F 41/076 (2016.01); B22F 3/12 (2006.01); B29K 83/00 (2006.01); B29K 105/16 (2006.01); B29K 505/00 (2006.01); B29L 31/34 (2006.01);
U.S. Cl.
CPC ...
B29C 43/18 (2013.01); B22F 1/08 (2022.01); B22F 1/10 (2022.01); B29C 43/00 (2013.01); B29C 43/003 (2013.01); B29C 43/52 (2013.01); H01F 17/045 (2013.01); H01F 27/2847 (2013.01); H01F 27/2852 (2013.01); H01F 27/292 (2013.01); H01F 41/005 (2013.01); H01F 41/0246 (2013.01); H01F 41/061 (2016.01); H01F 41/076 (2016.01); B22F 3/12 (2013.01); B29C 2043/181 (2013.01); B29K 2083/00 (2013.01); B29K 2105/16 (2013.01); B29K 2505/00 (2013.01); B29K 2995/0008 (2013.01); B29L 2031/34 (2013.01); H01F 2017/046 (2013.01); H01F 2017/048 (2013.01);
Abstract

A manufacturing method of a coil component comprising the steps of: preparing a coil assembly body in which a coil is attached on a magnetic core and a mold body which is formed with a cavity portion in the inside thereof and which includes at least one opening portion, putting a viscous admixture including magnetic powders and thermosetting resin and the coil assembly body in the cavity portion, pushing the put-in viscous admixture in the mold body, and thermally-curing the pushed-in viscous admixture and forming a magnetic exterior body which covers the coil assembly body.

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