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:
May. 13, 2003
Filed:
Jun. 26, 2000
Naoto Yoshimi, Fukuyama, JP;
Satoru Ando, Fukuyama, JP;
Masaru Sagiyama, Fukuyama, JP;
Akihiko Furuta, Tokyo, JP;
Masaaki Yamashita, Fukuyama, JP;
Akira Matsuzaki, Fukuyama, JP;
Takafumi Yamaji, Kawasaki, JP;
Tatsuya Miyoshi, Fukuyama, JP;
Takahiro Kubota, Fukuyama, JP;
Yasuhiko Haruta, Hiratuka, JP;
Hiroyasu Matsuki, Hiratuka, JP;
Kenichi Tomita, Hiratuka, JP;
NKK Corporation, Tokyo, JP;
Abstract
A coated steel sheet having excellent corrosion resistance comprises: a zinc or a zinc alloy plated steel sheet or an aluminum or an aluminum alloy plated steel sheet; a composite oxide coating formed on the surface of the plated steel sheet; and an organic coating formed on the composite oxide coating. The composite oxide coating contains a fine particle oxide and a phosphoric acid and/or a phosphoric acid compound. The organic coating has thickness of from 0.1 to 5 &mgr;m.