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:
Mar. 28, 2023
Filed:
Feb. 24, 2020
Applicant:
Taiyo Yuden Co., Ltd., Tokyo, JP;
Inventors:
Yoko Orimo, Takasaki, JP;
Shinsuke Takeoka, Takasaki, JP;
Assignee:
TAIYO YUDEN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/147 (2006.01); H01F 27/255 (2006.01); H01F 27/28 (2006.01); H05K 1/18 (2006.01); C22C 38/18 (2006.01); C22C 38/06 (2006.01); C22C 38/02 (2006.01); B22F 1/00 (2022.01); B22F 1/142 (2022.01);
U.S. Cl.
CPC ...
H01F 1/14791 (2013.01); B22F 1/142 (2022.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); H01F 1/14766 (2013.01); H01F 27/255 (2013.01); H01F 27/2804 (2013.01); H05K 1/181 (2013.01); B22F 2301/35 (2013.01); C22C 2202/02 (2013.01); H01F 2027/2809 (2013.01); H05K 2201/1003 (2013.01);
Abstract
A soft magnetic alloy powder contains Fe, Si, and at least one of Cr and Al, as constituent elements, wherein, on the surface of each grain constituting the alloy powder, an oxide film is provided which is such that: it contains Si, as well as at least one of Cr and Al, as constituent elements; these elements are contained at higher percentages by mass than those in the alloy part inside the grain; and the content of Si, expressed in percentage by mass, is higher than the total content of Cr and Al. The soft magnetic metal powder can achieve a higher filling rate.