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:
Dec. 26, 2023
Filed:
Jul. 08, 2021
Metal magnetic powder and method for manufacturing same, as well as coil component and circuit board
Applicant:
Taiyo Yuden Co., Ltd., Tokyo, JP;
Inventors:
Yoko Orimo, Takasaki, JP;
Tomoo Kashiwa, Takasaki, JP;
Assignee:
TAIYO YUDEN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/147 (2006.01); C23C 8/14 (2006.01); C22C 38/02 (2006.01); C22C 38/18 (2006.01); B22F 1/16 (2022.01); B22F 1/142 (2022.01); B22F 1/145 (2022.01); C22C 38/00 (2006.01); H01F 27/255 (2006.01); H01F 17/04 (2006.01);
U.S. Cl.
CPC ...
H01F 1/147 (2013.01); B22F 1/142 (2022.01); B22F 1/145 (2022.01); B22F 1/16 (2022.01); C22C 38/00 (2013.01); C22C 38/02 (2013.01); C22C 38/18 (2013.01); C23C 8/14 (2013.01); B22F 2301/35 (2013.01); C22C 2202/02 (2013.01); H01F 17/045 (2013.01); H01F 27/255 (2013.01); H01F 2017/048 (2013.01);
Abstract
A metal magnetic powder is constituted by metal magnetic grains that each include: a metal phase where the mass percentage of Fe at its center part is lower than that at its contour part; and an oxide film covering the metal phase so as to allow the magnetic body resistant to magnetic saturation and low in iron loss.