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:
Feb. 28, 2017
Filed:
Aug. 26, 2013
Applicant:
Kobe Steel, Ltd., Kobe-shi, JP;
Inventors:
Hiroyuki Mitani, Kobe, JP;
Takeo Miyamura, Kobe, JP;
Hirofumi Hojo, Takasago, JP;
Tomotsuna Kamijo, Takasago, JP;
Assignee:
Kobe Steel, Ltd., Kobe-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/02 (2006.01); H01F 41/02 (2006.01); H01F 1/24 (2006.01); B22F 1/02 (2006.01); H01F 1/147 (2006.01); H01F 1/20 (2006.01); H01F 1/22 (2006.01); B22F 5/00 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0246 (2013.01); B22F 1/02 (2013.01); B22F 3/02 (2013.01); H01F 1/147 (2013.01); H01F 1/20 (2013.01); H01F 1/22 (2013.01); H01F 1/24 (2013.01); B22F 5/00 (2013.01); B22F 2999/00 (2013.01); C22C 2202/02 (2013.01);
Abstract
A powder magnetic core which exhibits a high compact density and a reduced iron loss can be obtained by compacting a soft magnetic powder in which the mass ratio of soft magnetic powder particles that pass through a filter having an opening of 75 μm is 95 mass % or higher relative to the whole amount of the soft magnetic powder and which has a mean strain of less than 0.100%.