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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 10418160 B1

PDFFull Text
Date of Patent:
Sep. 17, 2019

Filed:

Nov. 28, 2018

Metal powder core, coil component employing same, and fabrication method for metal powder core

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Tetsuro Kato, Osaka, JP;

Shin Noguchi, Osaka, JP;

Kazunori Nishimura, Osaka, JP;

Assignee:

Hitachi Metals, Ltd., Tokyo, JP;

Attorneys:

Michael J. Blessent

Bret E. Field

Bozicevic, Field & Francis LLP

Primary Examiner:

Tuyen T Nguyen

Int. Cl.
CPC ...
H01F 27/24 (2006.01); H01F 1/147 (2006.01); H01F 5/00 (2006.01); H01F 1/153 (2006.01); H01F 1/24 (2006.01); H01F 3/08 (2006.01); B22F 1/00 (2006.01); B22F 3/02 (2006.01); B22F 9/04 (2006.01); C21D 9/00 (2006.01); C22C 9/02 (2006.01); C22C 45/02 (2006.01); H01F 1/22 (2006.01); H01F 1/26 (2006.01);
U.S. Cl.
CPC ...
H01F 1/147 (2013.01); B22F 1/0062 (2013.01); B22F 3/02 (2013.01); B22F 9/04 (2013.01); C21D 9/0068 (2013.01); C22C 9/02 (2013.01); C22C 45/02 (2013.01); H01F 1/15308 (2013.01); H01F 1/22 (2013.01); H01F 1/24 (2013.01); H01F 3/08 (2013.01); H01F 5/00 (2013.01); H01F 27/24 (2013.01); B22F 2301/10 (2013.01); B22F 2301/35 (2013.01); B22F 2302/45 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); C22C 2202/02 (2013.01); H01F 1/26 (2013.01);
Abstract

Provided are: a metal powder core having a configuration suitable for core loss reduction and strength improvement; a coil component employing this; and a fabrication method for metal powder core. The metal powder core is obtained by dispersing Cu powder among soft magnetic material powder comprising pulverized powder of Fe-based soft magnetic alloy and atomized powder of Fe-based soft magnetic alloy and then by performing compaction. The fabrication method for metal powder core includes: a mixing step of mixing together soft magnetic material powder containing thin-leaf shaped pulverized powder of Fe-based soft magnetic alloy and atomized powder of Fe-based soft magnetic alloy, Cu powder, and a binder and thereby obtaining a mixture; a forming step of performing pressure forming on the mixture obtained at the mixing step; and a heat treatment step of annealing a formed article obtained at the forming step.

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