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. 24, 2025
Filed:
Oct. 03, 2019
Nippon Steel Corporation, Tokyo, JP;
Hisashi Mogi, Tokyo, JP;
Takahito Mizumura, Tokyo, JP;
Fumiaki Takahashi, Tokyo, JP;
Teruyuki Tamaki, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
The present invention provides a magnetic core and transformer which are reduced in core loss. The magnetic core according to the present invention comprises a core member which is formed by winding first electrical steel sheets, which is ring shaped seen from a side surface, and which has one or more bent parts seen from a side surface and one or more stacks of second electrical steel sheets stacked together, each the stack being arranged at least at one of the surfaces formed by side surfaces of the first electrical steel sheets at a bent part of the core member so that a surface formed by side surfaces of the second electrical steel sheets runs along it.