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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 10312004 B1

PDFFull Text
Date of Patent:
Jun. 04, 2019

Filed:

Jun. 07, 2017

Metal powder core comprising copper powder, coil component, and fabrication method for metal powder core

Applicant:

Hitachi Metals, Ltd., Tokyo, JP;

Inventors:

Tetsuro Kato, Tottori, JP;

Shin Noguchi, Tottori, JP;

Kazunori Nishimura, Tottori, JP;

Assignee:

HITACHI METALS, LTD., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Hoa (Holly) Le

Int. Cl.
CPC ...
B22F 3/12 (2006.01); B22F 9/02 (2006.01); C21D 1/34 (2006.01); H01F 1/153 (2006.01); H01F 1/28 (2006.01); B22F 1/02 (2006.01); C22C 33/02 (2006.01); C22C 45/02 (2006.01); B22F 9/00 (2006.01); B22F 9/04 (2006.01); H01F 3/08 (2006.01); H01F 41/02 (2006.01); B22F 1/00 (2006.01); B22F 3/02 (2006.01); H01F 1/22 (2006.01); H01F 1/24 (2006.01); H01F 1/33 (2006.01); H01F 27/255 (2006.01); H01F 27/28 (2006.01);
U.S. Cl.
CPC ...
H01F 1/15308 (2013.01); B22F 1/0059 (2013.01); B22F 1/02 (2013.01); B22F 3/02 (2013.01); B22F 9/002 (2013.01); B22F 9/04 (2013.01); C22C 33/02 (2013.01); C22C 33/0278 (2013.01); C22C 45/02 (2013.01); H01F 1/1535 (2013.01); H01F 1/15333 (2013.01); H01F 1/22 (2013.01); H01F 1/24 (2013.01); H01F 1/28 (2013.01); H01F 1/33 (2013.01); H01F 3/08 (2013.01); H01F 27/255 (2013.01); H01F 27/28 (2013.01); H01F 41/0246 (2013.01);
Abstract

In a metal powder core constructed from soft magnetic material powder and a coil component employing this, a configuration suitable for reduction of a core loss is provided. The metal powder core constructed from soft magnetic material powder is characterized in that Cu is dispersed among the soft magnetic material powder. It is characterized in that, preferably, the soft magnetic material powder is pulverized powder of soft magnetic alloy ribbon and that Cu is dispersed among the pulverized powder of soft magnetic alloy ribbon. Further, it is characterized in that, preferably, the soft magnetic alloy ribbon is a Fe-based nano crystal alloy ribbon or a Fe-based alloy ribbon showing a Fe-based nano crystalline structure and that the pulverized powder has a nano crystalline structure.

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