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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 11136659 B1

PDFFull Text
Date of Patent:
Oct. 05, 2021

Filed:

Mar. 07, 2017

Surface-treated steel material

Applicant:

Nippon Steel Coated Sheet Corporation, Tokyo, JP;

Inventors:

Toshiaki Sakamoto, Tokyo, JP;

Yoichi Tozaki, Tokyo, JP;

Hiromasa Nomura, Tokyo, JP;

Tomonari Hamamura, Tokyo, JP;

Hideaki Nasu, Tokyo, JP;

Assignee:

NIPPON STEEL COATED SHEET CORPORATION, Tokyo, JP;

Attorney:

Wenderoth, Lind & Ponack, L.L.P.

Primary Examiner:

Michael E La Villa

Int. Cl.
CPC ...
C23C 2/26 (2006.01); C23C 2/12 (2006.01); C23C 22/42 (2006.01); C23C 28/00 (2006.01); C09D 5/08 (2006.01); C22C 18/04 (2006.01); C22C 21/10 (2006.01); C23C 2/06 (2006.01); C23C 28/02 (2006.01); C23C 30/00 (2006.01); C23C 22/60 (2006.01); C23C 22/40 (2006.01); C23C 2/40 (2006.01); C23C 2/28 (2006.01); B32B 15/01 (2006.01); B32B 15/18 (2006.01); B32B 15/04 (2006.01); B32B 15/08 (2006.01); B32B 15/092 (2006.01); B32B 15/09 (2006.01);
U.S. Cl.
CPC ...
C23C 2/26 (2013.01); B32B 15/01 (2013.01); B32B 15/012 (2013.01); B32B 15/013 (2013.01); B32B 15/04 (2013.01); B32B 15/043 (2013.01); B32B 15/08 (2013.01); B32B 15/09 (2013.01); B32B 15/092 (2013.01); B32B 15/18 (2013.01); C09D 5/084 (2013.01); C22C 18/04 (2013.01); C22C 21/10 (2013.01); C23C 2/06 (2013.01); C23C 2/12 (2013.01); C23C 2/28 (2013.01); C23C 2/40 (2013.01); C23C 22/40 (2013.01); C23C 22/42 (2013.01); C23C 22/60 (2013.01); C23C 28/00 (2013.01); C23C 28/021 (2013.01); C23C 28/023 (2013.01); C23C 28/025 (2013.01); C23C 28/321 (2013.01); C23C 28/322 (2013.01); C23C 28/3225 (2013.01); C23C 28/34 (2013.01); C23C 30/00 (2013.01); C23C 30/005 (2013.01); Y10T 428/12556 (2015.01); Y10T 428/12569 (2015.01); Y10T 428/12757 (2015.01); Y10T 428/12799 (2015.01); Y10T 428/12972 (2015.01); Y10T 428/12979 (2015.01); Y10T 428/24967 (2015.01); Y10T 428/263 (2015.01); Y10T 428/264 (2015.01); Y10T 428/265 (2015.01);
Abstract

A surface-treated steel material having cut edge corrosion resistance that is equal to or more than that of a chromate treatment without use of hexavalent chromium. The surface-treated steel material includes a coating film formed on a surface of a steel material through a plating layer that is obtained by immersing the steel material in a galvalume bath containing Mg. The coating film is formed using a coating composition containing a coating film-forming resin, a cross-linking agent, a predetermined vanadium compound, and trimagnesium phosphate; the vanadium compound is a compound satisfying a predetermined electrical conductivity; the content of the vanadium compound is restricted to a predetermined amount; the vanadium compound satisfies a predetermined pH; and the content of the trimagnesium phosphate is a predetermined amount.

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