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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 12790695 B1

PDFFull Text
Date of Patent:
Nov. 10, 2026

Filed:

Nov. 15, 2021

Can steel sheet and method for producing same

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Yuto Kawamura, Tokyo, JP;

Yusuke Nakagawa, Tokyo, JP;

Yoichiro Yamanaka, Tokyo, JP;

Jialin Wang, Tokyo, JP;

Shuhei Kozu, Tokyo, JP;

Assignee:

JFE Steel Corporation, Tokyo, JP;

Attorney:

Buchanan Ingersoll & Rooney PC

Primary Examiner:

Seth Dumbris

Int. Cl.
CPC ...
C23C 28/00 (2006.01); C23C 22/37 (2006.01); C25D 3/08 (2006.01); C25D 5/00 (2006.01); C25D 5/36 (2006.01); C25D 7/06 (2006.01); C25D 9/06 (2006.01); C25D 9/10 (2006.01); C25D 11/38 (2006.01);
U.S. Cl.
CPC ...
C23C 28/32 (2013.01); C23C 22/37 (2013.01); C23C 28/345 (2013.01); C25D 3/08 (2013.01); C25D 5/36 (2013.01); C25D 5/605 (2020.08); C25D 7/0614 (2013.01); C25D 9/06 (2013.01); C25D 9/10 (2013.01); C25D 11/38 (2013.01);
Abstract

There is provided a steel sheet for cans including, on a surface of a steel sheet, a chromium metal layer and a hydrated chromium oxide layer stacked in this order from the steel sheet side. The chromium metal layer has a coating weight of 50 to 200 mg/m, and the hydrated chromium oxide layer has a coating weight of 3 to 30 mg/min terms of chromium amount. The chromium metal layer includes a base portion of flat plate shape and granular protrusions provided on the base portion. At least 20% of the granular protrusions has a circularity C of 0.85 or less. The circularity C is expressed by C=4πA/U, when the outer perimeter of a projection image of a granular protrusion is represented by U, and the area thereof is represented by A.

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Kawamura, Yuto. (2026). Can steel sheet and method for producing same (U.S. Patent No. 12790695). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12790695

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