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:
Apr. 24, 2007
Filed:
Mar. 06, 2001
Applicants:
Hardy Wietzoreck, Frankfurt am Main, DE;
Klaus Bittner, Frankfurt am Main, DE;
Thomas Kolberg, Heppenheim, DE;
Marion Wegner, Frankfurt am Main, DE;
Thomas Wendel, Schwalbach, DE;
Gerrit Schüllermann, Maintal, DE;
Inventors:
Hardy Wietzoreck, Frankfurt am Main, DE;
Klaus Bittner, Frankfurt am Main, DE;
Thomas Kolberg, Heppenheim, DE;
Marion Wegner, Frankfurt am Main, DE;
Thomas Wendel, Schwalbach, DE;
Gerrit Schüllermann, Maintal, DE;
Assignee:
Chemetall GmbH, Franfurt am Main, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23C 22/18 (2006.01); C23C 22/07 (2006.01); C23C 22/12 (2006.01); C23C 22/05 (2006.01);
U.S. Cl.
CPC ...
Abstract
Metallic surfaces are coated with an aqueous, acidic phosphate solution containing 10 to 60 g/l zinc, 0.5 to 40 g/l manganese, 50 to 300 g/l phosphate ions calculated as PO, and optionally other components.