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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.:

US 11114227 B1

PDFFull Text
Date of Patent:
Sep. 07, 2021

Filed:

Dec. 14, 2016

Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Masanori Uesaka, Tokyo, JP;

Kunihiro Senda, Tokyo, JP;

Takeshi Omura, Tokyo, JP;

Assignee:

JFE STEEL CORPORATION, Tokyo, JP;

Attorney:

Kenja IP Law PC

Primary Examiner:

Paul A Wartalowicz

Assistant Examiner:

Stephani Hill

Int. Cl.
CPC ...
H01F 1/16 (2006.01); C21D 8/12 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/00 (2006.01); C22C 38/14 (2006.01); C22C 38/60 (2006.01); C22C 38/06 (2006.01); H01F 1/147 (2006.01); C21D 9/46 (2006.01); C21D 1/76 (2006.01);
U.S. Cl.
CPC ...
H01F 1/16 (2013.01); C21D 1/76 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1261 (2013.01); C21D 8/1266 (2013.01); C21D 8/1272 (2013.01); C21D 9/46 (2013.01); C22C 38/00 (2013.01); C22C 38/004 (2013.01); C22C 38/005 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/14 (2013.01); C22C 38/60 (2013.01); H01F 1/14775 (2013.01);
Abstract

A non-oriented electrical steel sheet has low iron loss even under inverter excitation and can be suitably used as the iron core of a motor. The non-oriented electrical steel sheet has a specific chemical composition and an average grain size r of 40 μm to 120 μm. An area ratio R of a total area of grains having a grain size of ⅙ or less of the thickness of the steel sheet to a cross-sectional area of the steel sheet is 2% or greater, and the average grain size r (μm) and the area ratio R (%) satisfy a condition represented by Expression (1), R>−2.4×r+200 (1).

Find Patent Forward Citations

Uesaka, Masanori. (2021). Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet (U.S. Patent No. 11114227). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11114227

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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