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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 12033791 B1

PDFFull Text
Date of Patent:
Jul. 09, 2024

Filed:

Sep. 16, 2020

Method for forming film and method for manufacturing electrical steel sheet with insulating film

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Takashi Terashima, Tokyo, JP;

Karin Kokufu, Tokyo, JP;

Makoto Watanabe, Tokyo, JP;

Toshito Takamiya, Tokyo, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

Buchanan Ingersoll & Rooney PC

Primary Examiner:

Robert S Walters, Jr

Assistant Examiner:

Kristen A Dagenais

Int. Cl.
CPC ...
B05D 3/00 (2006.01); B05D 7/14 (2006.01); B05D 7/24 (2006.01); C21D 6/00 (2006.01); C21D 8/12 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/16 (2006.01); C22C 38/60 (2006.01); C23C 22/07 (2006.01); H01F 41/00 (2006.01);
U.S. Cl.
CPC ...
H01F 41/00 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/1222 (2013.01); C21D 8/1233 (2013.01); C21D 8/1261 (2013.01); C21D 8/1272 (2013.01); C21D 8/1283 (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); C22C 38/06 (2013.01); C22C 38/16 (2013.01); C22C 38/60 (2013.01); C23C 22/07 (2013.01); C22C 2202/02 (2013.01);
Abstract

A method for forming a film on a surface of a steel sheet includes applying a treatment solution for forming a film containing a fibrous material to the surface of the steel sheet by using a coater under a condition in which a difference between a speed of the steel sheet and a speed of an applicator of the coater is 1.0 m/min or more, inclining the surface of the steel sheet, to which the treatment solution for forming a film has been applied, at an angle of 10° or more with respect to a horizontal plane until drying is started, and thereafter drying the steel sheet.

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