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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 12252802 B1

PDFFull Text
Date of Patent:
Mar. 18, 2025

Filed:

Nov. 29, 2021

Surface-treated steel sheet

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Kosuke Kawamoto, Tokyo, JP;

Yasuto Goto, Tokyo, JP;

Yuta Dairokuno, Tokyo, JP;

Koki Shimada, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Renner, Otto, Boisselle & Sklar, LLP

Primary Examiner:

Seth Dumbris

Int. Cl.
CPC ...
C25D 5/12 (2006.01); C21D 9/46 (2006.01); C25D 3/12 (2006.01); C25D 5/36 (2006.01); C25D 5/50 (2006.01);
U.S. Cl.
CPC ...
C25D 5/12 (2013.01); C21D 9/46 (2013.01); C25D 3/12 (2013.01); C25D 5/36 (2013.01); C25D 5/50 (2013.01); Y10T 428/12472 (2015.01); Y10T 428/12993 (2015.01);
Abstract

A surface-treated steel sheet of the present disclosure includes a steel sheet, and an alloy layer containing Ni and Co on a surface of the steel sheet. A surface roughness Ra1 of the surface of the alloy layer over a sampling length of 5.0 mm in the width direction of the steel sheet is 2.0 μm or less. Ra2 that denotes the arithmetic mean height of a roughness curve of the surface of the alloy layer over a sampling length of 10 μm in the width direction of the steel sheet is 20 nm or less, and RSm that denotes the mean length of roughness curve elements over the sampling length of 10 μm in the width direction of the steel sheet is 700 nm or more, Ra2 and RSm being measured using an atomic force microscope.

Find Patent Forward Citations

Kawamoto, Kosuke. (2025). Surface-treated steel sheet (U.S. Patent No. 12252802). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12252802

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

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