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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 10483034 B1

PDFFull Text
Date of Patent:
Nov. 19, 2019

Filed:

Mar. 07, 2017

Manufacturing method of coil-embedded inductor using soft magnetic molding solution and coil-embedded inductor manufactured by using the same

Applicant:

Chang Sung Co., Ltd., Cheongju-si, Chungcheongbuk-do, KR;

Inventors:

Tae Kyung Lee, Incheon, KR;

Seung Nam Yang, Uiwang-si, KR;

Sung Jin Choi, Pyeongtaek-si, KR;

Assignee:

CHANG SUNG CO., LTD., Cheongju-si, Chungcheongbuk-Do, KR;

Attorney:

Buchanan Ingersoll & Rooney PC

Primary Examiner:

Anthony J Zimmer

Assistant Examiner:

Ricardo D Morales

Int. Cl.
CPC ...
H01F 41/02 (2006.01); H01F 1/26 (2006.01); H01F 3/08 (2006.01); H01F 27/255 (2006.01); H01F 27/32 (2006.01); B22F 1/00 (2006.01); C22C 33/02 (2006.01); B22F 3/22 (2006.01); H01F 27/28 (2006.01); H01F 41/04 (2006.01); H01F 1/147 (2006.01); H01F 17/04 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0246 (2013.01); B22F 1/0011 (2013.01); B22F 1/0014 (2013.01); B22F 1/0062 (2013.01); B22F 1/0074 (2013.01); B22F 3/225 (2013.01); C22C 33/0257 (2013.01); H01F 1/26 (2013.01); H01F 3/08 (2013.01); H01F 27/255 (2013.01); H01F 27/28 (2013.01); H01F 27/327 (2013.01); H01F 41/04 (2013.01); B22F 2001/0066 (2013.01); B22F 2301/35 (2013.01); B22F 2304/10 (2013.01); H01F 1/14758 (2013.01); H01F 1/14766 (2013.01); H01F 1/14791 (2013.01); H01F 2017/048 (2013.01);
Abstract

An optimal condition is disclosed in which a composition of a soft magnetic molding solution includes 94 to 98 wt % of a soft magnetic powder and 2 to 6 wt % of an organic vehicle, in order to manufacture a coil-embedded inductor having various advantages such as high inductance, a low core loss, and high reliability. An exemplary manufacturing method is provided of a coil-embedded inductor having a structure in which a part of a coil is embedded in a magnetic core, which includes preparing an organic vehicle, preparing a soft magnetic molding solution having the density of 5.5 to 6.5 g/cc by mix-milling a soft magnetic powder with the organic vehicle, positioning and fixing a part of the coil in the case, and forming the magnetic core by injecting and curing the soft magnetic molding solution into the case.

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