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:
Jun. 20, 2023
Filed:
Feb. 18, 2020
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Isao Kanada, Tokyo, JP;
Yu Yonezawa, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/24 (2006.01); H01F 1/33 (2006.01); H01F 3/08 (2006.01); H01F 1/20 (2006.01); H01F 1/12 (2006.01); H01F 1/44 (2006.01); H01F 1/26 (2006.01); H01F 17/00 (2006.01); H01F 17/04 (2006.01); H01F 1/22 (2006.01);
U.S. Cl.
CPC ...
H01F 1/24 (2013.01); H01F 1/12 (2013.01); H01F 1/20 (2013.01); H01F 1/33 (2013.01); H01F 3/08 (2013.01); H01F 1/22 (2013.01); H01F 1/26 (2013.01); H01F 1/442 (2013.01); H01F 17/0013 (2013.01); H01F 2017/048 (2013.01);
Abstract
A composite magnetic material includes a powder and a resin. The powder has a main component containing Fe or Fe and Co. An average minor axis length in primary particles of the powder is 100 nm or less. A point satisfying (X, Y)=(σ/A(%), (A-σ)) on an XY coordinate plane is present within a region (including a boundary) surrounded by three points α(24.5, 6.7), β(72.0, 1.2), and γ(24.5, 1.2), in which an average of aspect ratios in the primary particles of the powder is set to A, and a standard deviation of the aspect ratios in the primary particles of the powder is set to σ.