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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 10000858 B1

PDFFull Text
Date of Patent:
Jun. 19, 2018

Filed:

Jul. 23, 2014

Bath for surface treatment, method of producing surface-treated steel plate by using the bath for surface treatment, and surface treated steel plate produced by the same method

Applicants:

Toyo Seikan Group Holdings, Ltd., Tokyo, JP;

Nippon Paint Co., Ltd., Osaka-shi, Osaka, JP;

Toyo Kohan Co., Ltd., Toyko, JP;

Inventors:

Wataru Kurokawa, Yokohama, JP;

Seitaro Kanazawa, Yokohama, JP;

Shinichi Taya, Kudamatsu, JP;

Kunihiro Yoshimura, Kudamatsu, JP;

Naomi Iida, Kudamatsu, JP;

Miwa Iida, Tokyo, JP;

Masahiko Matsukawa, Tokyo, JP;

Assignees:

TOYO SEIKAN GROUP HOLDINGS, LTD., Tokyo, JP;

NIPPON PAINT SURF CHEMICALS CO., LTD., Tokyo, JP;

TOYO KOHAN CO., LTD., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Edna Wong

Int. Cl.
CPC ...
C25D 3/56 (2006.01); C25D 3/60 (2006.01); C25D 3/00 (2006.01); C25D 3/32 (2006.01); C25D 9/10 (2006.01); B32B 15/04 (2006.01); B32B 15/08 (2006.01); B32B 15/082 (2006.01); C25D 21/14 (2006.01); C25D 21/18 (2006.01); C25D 5/50 (2006.01);
U.S. Cl.
CPC ...
C25D 3/32 (2013.01); B32B 15/04 (2013.01); B32B 15/08 (2013.01); B32B 15/082 (2013.01); C25D 9/10 (2013.01); C25D 21/14 (2013.01); C25D 21/18 (2013.01); B32B 2439/40 (2013.01); C25D 5/505 (2013.01); Y10T 428/1259 (2015.01); Y10T 428/12569 (2015.01); Y10T 428/12618 (2015.01); Y10T 428/12722 (2015.01); Y10T 428/12806 (2015.01); Y10T 428/12972 (2015.01);
Abstract

To provide a bath for surface treatment capable of forming a surface-treating film having excellent corrosion resistance by a high-speed electrolytic treatment, and a method of producing a surface-treated steel plate having excellent corrosion resistance and closely adhering property to the coating maintaining good productivity. A bath for surface treatment used for forming a surface-treating film on the surface of a steel plate by cathodic electrolysis, the bath for surface treatment containing Zr and/or Ti, and a polycarboxylic acid.

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