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. 09, 2015
Filed:
Mar. 09, 2010
Satoshi Arai, Tokyo, JP;
Yasuhide Morimoto, Tokyo, JP;
Kiyokazu Ishizuka, Tokyo, JP;
Kazutoshi Takeda, Tokyo, JP;
Satoshi Arai, Tokyo, JP;
Yasuhide Morimoto, Tokyo, JP;
Kiyokazu Ishizuka, Tokyo, JP;
Kazutoshi Takeda, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A non-oriented magnetic steel sheet contains, by mass %, C: 0.005% or less; Si: 2% to 4%; Mn and V: totally 11% or less; and Al: 3% or less, with the balance being Fe and inevitable impurities, wherein a Mn concentration (mass %) and a V concentration (mass %) in a thickness direction satisfy the following formula. 0.1<(Xs−Xc)/t<100, where Xs: a sum of the Mn concentration (mass %) and the V concentration (mass %) at a surface of the steel sheet, Xc: a sum of the Mn concentration (mass %) and the V concentration (mass %) at a center of the steel sheet, and t: a depth (mm), from the surface of the steel sheet, of a position where the sum of the Mn concentration (mass %) and the V concentration (mass %) is equal to Xc.