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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 11566302 B1

PDFFull Text
Date of Patent:
Jan. 31, 2023

Filed:

Dec. 14, 2017

Grain-oriented electrical steel sheet and method for manufacturing same

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Takeshi Omura, Tokyo, JP;

Hirotaka Inoue, Tokyo, JP;

Kunihiro Senda, Tokyo, JP;

Seiji Okabe, Tokyo, JP;

Assignee:

JFE STEEL CORPORATION, Tokyo, JP;

Attorney:

Kenja IP Law PC

Primary Examiner:

Humera N Sheikh

Assistant Examiner:

Elizabeth D Ivey

Int. Cl.
CPC ...
C21D 9/46 (2006.01); C21D 3/04 (2006.01); C21D 6/00 (2006.01); C21D 8/00 (2006.01); C21D 8/12 (2006.01); C22C 38/00 (2006.01); C22C 38/04 (2006.01); C22C 38/34 (2006.01); H01F 1/147 (2006.01); H01F 27/245 (2006.01); C22C 38/02 (2006.01); C22C 38/18 (2006.01); C22C 38/44 (2006.01); C22C 38/60 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); C21D 3/04 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/005 (2013.01); C21D 8/1255 (2013.01); C21D 8/1288 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/008 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/18 (2013.01); C22C 38/34 (2013.01); C22C 38/44 (2013.01); C22C 38/60 (2013.01); H01F 1/14791 (2013.01); H01F 27/245 (2013.01); H01F 41/0233 (2013.01); C22C 2202/02 (2013.01);
Abstract

Provided is a grain-oriented electrical steel sheet having better transformer iron loss property than conventional grain-oriented electrical steel sheets. A grain-oriented electrical steel sheet comprises: a steel substrate; a forsterite film on a surface of the steel substrate; and a Cr-depleted layer at a boundary between the steel substrate and the forsterite film, the Cr-depleted layer having a Cr concentration that is 0.70 times to 0.90 times a Cr concentration of the steel substrate.

Find Patent Forward Citations

Omura, Takeshi. (2023). Grain-oriented electrical steel sheet and method for manufacturing same (U.S. Patent No. 11566302). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11566302

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

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