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. 12, 2026
Filed:
Feb. 15, 2023
Tdk Corporation, Tokyo, JP;
Seigo Tokoro, Tokyo, JP;
Kazuhiro Yoshidome, Tokyo, JP;
Akito Hasegawa, Tokyo, JP;
Nobuhiro Okuda, Tokyo, JP;
TDK CORPORATION, Tokyo, JP;
Abstract
A magnetic core, containing metal magnetic powder and resin, in which a content of the metal magnetic powder satisfies 60%≤(A1/A2)≤90%. The metal magnetic powder includes small particles having the Heywood diameter of 1 μm or less in the cross section of the magnetic core and large particles having the Heywood diameter of 5 μm or more and less than 40 μm. An edge-to-edge distance regarding to a distance between the small particles satisfies 5≤((L1av/dav)×100)≤70. An edge-to-edge distance regarding to a distance between the small particles and the large particles satisfies 0.02 μm≤L2av≤0.13 μm and σ≤0.25 μm.