IDiyas

For the Inventor, By the Inventor

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 10837118 B1

PDFFull Text
Date of Patent:
Nov. 17, 2020

Filed:

Jan. 20, 2016

Surface treated steel sheet for fuel tank

Applicant:

Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;

Inventors:

Kiyokazu Ishizuka, Tokyo, JP;

Noriyuki Maekawa, Tokyo, JP;

Hiroaki Uramoto, Tokyo, JP;

Hidetoshi Shindo, Tokyo, JP;

Ikuo Kikuchi, Tokyo, JP;

Kenichiro Matsumura, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Xiaobei Wang

Int. Cl.
CPC ...
B32B 15/04 (2006.01); B32B 15/18 (2006.01); B32B 15/08 (2006.01); C25D 7/00 (2006.01); C23C 28/00 (2006.01); B60K 15/03 (2006.01); B65D 85/84 (2006.01); C23C 2/06 (2006.01); C23C 2/26 (2006.01); C23C 22/44 (2006.01); C23C 2/40 (2006.01); C23C 22/42 (2006.01); C25D 5/48 (2006.01); C23C 22/08 (2006.01); B32B 1/02 (2006.01); C23C 22/06 (2006.01); C25D 3/22 (2006.01); C25D 3/56 (2006.01); B62J 35/00 (2006.01);
U.S. Cl.
CPC ...
C25D 7/00 (2013.01); B32B 1/02 (2013.01); B32B 15/18 (2013.01); B60K 15/03 (2013.01); B65D 85/84 (2013.01); C23C 2/06 (2013.01); C23C 2/26 (2013.01); C23C 2/40 (2013.01); C23C 22/06 (2013.01); C23C 22/08 (2013.01); C23C 22/42 (2013.01); C23C 22/44 (2013.01); C23C 28/3225 (2013.01); C23C 28/34 (2013.01); C25D 3/22 (2013.01); C25D 3/56 (2013.01); C25D 5/48 (2013.01); B60K 2015/03032 (2013.01); B62J 35/00 (2013.01); C23C 2222/20 (2013.01);
Abstract

Provided is a surface treated steel sheet for a fuel tank, the surface treated steel sheet including: a Zn plated layer or a Zn—Ni alloy plated layer which is formed on at least a surface of the steel sheet to be an inner surface of the fuel tank; and a chromate-free chemical conversion coating layer containing a water-and-oil repellent, the chromate-free chemical conversion coating layer being placed over the Zn plated layer or the Zn—Ni alloy plated layer on the surface to be the inner surface of the fuel tank. A water contact angle on a surface of the chromate-free chemical conversion coating layer is more than or equal to 70 degrees and an n-hexadecane contact angle on the surface of the chromate-free chemical conversion coating layer is more than or equal to 30 degrees and less than or equal to 70 degrees.

Find Patent Forward Citations

Loading…