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:
Oct. 22, 2024
Filed:
Apr. 13, 2020
Jfe Steel Corporation, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
A non-oriented electrical steel sheet having: low high-frequency iron loss and high magnetic flux density; an inner layer and surface layers provided on both sides of the inner layer, the surface layers and the inner layer having specific chemical compositions; the thickness t of 0.01 mm to 0.35 mm; a multilayer ratio of tto t of 0.10 to 0.70, tdenoting a total thickness of the surface layers; a difference between [Si]and [Si]of 1.0 mass % to 4.5 mass % or less, [Si]denoting a Si content in each of the surface layers and [Si]denoting a Si content in the inner layer; and a difference between [Mn]and [Mn]of 0.01 mass % to 0.40 mass %, [Mn]denoting a Mn content at a mid-thickness position t/2 and [Mn]denoting an average Mn content in a region from a surface to a position at a depth of ( 1/10)t.