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. 21, 2024
Filed:
Mar. 23, 2021
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Kazuhiro Yoshidome, Tokyo, JP;
Hiroyuki Matsumoto, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 3/08 (2006.01); B22F 1/052 (2022.01); B22F 1/07 (2022.01); B22F 1/16 (2022.01); C22C 45/02 (2006.01); H01F 1/147 (2006.01);
U.S. Cl.
CPC ...
H01F 3/08 (2013.01); B22F 1/052 (2022.01); B22F 1/07 (2022.01); C22C 45/02 (2013.01); H01F 1/147 (2013.01); B22F 1/16 (2022.01); B22F 2304/10 (2013.01);
Abstract
To obtain a magnetic core having an improved relative magnetic permeability and an improved withstand voltage property and the like. The magnetic core contains large particles observed as soft magnetic particles having a Heywood diameter of 5 μm or more and 25 μm or less and small particles observed as soft magnetic particles having a Heywood diameter of 0.5 μm or more and 3 μm or less in a cross section. 1.00≤A1≤1.50, 1.30≤A2≤2.50, and A1≤A2 are satisfied, in which an average aspect ratio of the large particles is A1 and an average aspect ratio of the small particles is A2.