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:
Aug. 18, 2009
Filed:
Jun. 07, 2007
Hideki Takakuwa, Kanagawa, JP;
Yuko Takanashi, Kanagawa, JP;
Katsutoshi Ando, Saitama, JP;
Yasuhito Murai, Saitama, JP;
Hideki Takakuwa, Kanagawa, JP;
Yuko Takanashi, Kanagawa, JP;
Katsutoshi Ando, Saitama, JP;
Yasuhito Murai, Saitama, JP;
Nihon Parkerizing Co., Ltd., Tokyo, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A solution for treating a surface of an iron material includes (a) zirconium fluoride; (b) ion of a rare earth element and/or a compound containing a rare earth element; (c) a polyallylamine; (d) aluminum ion; and (e) free fluorine ion. Zirconium in the component (a) is at a weight concentration A of 10 to 1000 ppm. The ratio K of the weight concentration B of the rare earth element in the component (b) to the weight concentration A (B/A) is 0.1 to 30. The component (d) is at a weight concentration D of 50 to 250 ppm. The component (e) is at a weight concentration E of 0.5 to 30 ppm. A coating having excellent corrosion resistance before and after the subsequent coating can be deposited on the surface of an iron material by using the surface treating solution which does not contain environmentally harmful ingredients.