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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 12215410 B1

PDFFull Text
Date of Patent:
Feb. 04, 2025

Filed:

Jan. 16, 2020

Grain oriented electrical steel sheet, forming method for insulation coating of grain oriented electrical steel sheet, and producing method for grain oriented electrical steel sheet

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Ichiro Tanaka, Tokyo, JP;

Takashi Kataoka, Tokyo, JP;

Kazutoshi Takeda, Tokyo, JP;

Tomoya Suenaga, Tokyo, JP;

Yuki Kunita, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Anthony M Liang

Int. Cl.
CPC ...
C22C 38/06 (2006.01); C21D 3/04 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); H01F 1/147 (2006.01);
U.S. Cl.
CPC ...
C22C 38/06 (2013.01); C21D 3/04 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0236 (2013.01); C21D 9/46 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); H01F 1/147 (2013.01); C21D 2201/05 (2013.01); C22C 2202/02 (2013.01);
Abstract

A grain oriented electrical steel sheet includes a base steel sheet, an oxide layer, and a tension-insulation coating. When the iron oxide layer is analyzed by a fourier transform infrared spectroscopy, an absorbance Aat 650 cmand an absorbance Aat 1250 cmsatisfy 0.2≤A/A≤5.0. Moreover, a magnetic flux density B8 in a rolling direction of the grain oriented electrical steel sheet is 1.90 T or more.

Find Patent Forward Citations

Tanaka, Ichiro. (2025). Grain oriented electrical steel sheet, forming method for insulation coating of grain oriented electrical steel sheet, and producing method for grain oriented electrical steel sheet (U.S. Patent No. 12215410). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12215410

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