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.:
Date of Patent:
May. 07, 2019
Filed:
Mar. 29, 2017
Applicant:
Alps Electric Co., Ltd., Ota-ku, Tokyo, JP;
Inventors:
Ryo Nakabayashi, Niigata-ken, JP;
Akinori Kojima, Niigata-ken, JP;
Seiichi Abiko, Niigata-ken, JP;
Keiichiro Sato, Niigata-ken, JP;
Akira Sato, Niigata-ken, JP;
Takao Mizushima, Niigata-ken, JP;
Assignee:
Alps Alpine Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 27/29 (2006.01); H01F 41/02 (2006.01); H01F 1/153 (2006.01); H01F 1/26 (2006.01); H01F 3/08 (2006.01); H01F 17/04 (2006.01); H01F 17/06 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0246 (2013.01); H01F 1/153 (2013.01); H01F 1/26 (2013.01); H01F 3/08 (2013.01); H01F 17/04 (2013.01); H01F 17/062 (2013.01); H01F 2017/048 (2013.01);
Abstract
A powder core includes: a powder of a crystalline magnetic material; and a powder of an amorphous magnetic material, in which a median diameter D50A of the powder of the amorphous magnetic material is 15 μm or less, and satisfies the expression: 1≤D50A/D50C≤3.5 with respect to a median diameter D50C of the powder of the crystalline magnetic material.