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.:
Date of Patent:
Sep. 06, 2011
Filed:
Oct. 26, 2007
Tatsuya Miyoshi, Fukuyama, JP;
Kenichi Sasaki, Fukuyama, JP;
Naoto Yoshimi, Chiba, JP;
Akira Matsuzaki, Fukuyama, JP;
Kazuhisa Okai, Fukuyama, JP;
Takao Ooshima, Hiratuka, JP;
Takashi Nakano, Hiratuka, JP;
Masahiro Murata, Hiratuka, JP;
Syoichi Tanaka, Hiratuka, JP;
Tatsuya Miyoshi, Fukuyama, JP;
Kenichi Sasaki, Fukuyama, JP;
Naoto Yoshimi, Chiba, JP;
Akira Matsuzaki, Fukuyama, JP;
Kazuhisa Okai, Fukuyama, JP;
Takao Ooshima, Hiratuka, JP;
Takashi Nakano, Hiratuka, JP;
Masahiro Murata, Hiratuka, JP;
Syoichi Tanaka, Hiratuka, JP;
JFE Steel Corporation, Tokyo, JP;
Kansai Paint Co., Ltd., Hyogo, JP;
Abstract
The surface-treated steel sheet has a zinc-based plated steel sheet, a surface-treatment coating being formed on the surface of the zinc-based steel sheet by applying and drying a surface treatment coating composition thereon, and a top coating being formed by applying and drying a coating composition for top coating on the surface-treatment coating. The surface treatment coating composition contains a water-epoxy resin dispersion, a silane coupling agent, and phosphoric acid and/or a hexafluorometal acid. The coating composition for top coating contains a high molecular weight epoxy group-containing resin having number average molecular weights ranging from 6000 to 20000.