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. 15, 2009
Filed:
Aug. 17, 2005
Hiroki Nakamaru, Fukuyama, JP;
Chiyoko Tada, Chiba, JP;
Kazumi Yamashita, Chiba, JP;
Hideo Sasaoka, Chiba, JP;
Chiaki Kato, Tokyo, JP;
Hiroki Nakamaru, Fukuyama, JP;
Chiyoko Tada, Chiba, JP;
Kazumi Yamashita, Chiba, JP;
Hideo Sasaoka, Chiba, JP;
Chiaki Kato, Tokyo, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
Disclosed is a phosphated galvanized steel sheet comprising a steel sheet, a zinc-plating layer of η single phase which is formed on at least one side of the steel sheet and contains Ni in an amount of not less than 10 ppm by mass and not more than the solubility limit thereof, and a phosphate layer which is formed on the zinc-plating layer and contains Mg in an amount of not less than 0.1 % by mass and less than 2.0 % by mass. Although this steel sheet is not subjected to sealing, it has corrosion resistance equivalent to or higher than those of conventional steel sheets which have been subjected to sealing, while having excellent blackening resistance.