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:
Jul. 06, 2010
Filed:
Jun. 13, 2006
Helmut Witteler, Wachenheim, DE;
Walter Bertkau, Ludwigshafen, DE;
Thomas Heidenfelder, Dannstadt-Schauernheim, DE;
Alexander Göthlich, Mannheim, DE;
Jens Haas, Ludwigshafen, DE;
Frank Klippel, Ludwigshafen, DE;
Gunnar Schornick, Neuleiningen, DE;
Helmut Witteler, Wachenheim, DE;
Walter Bertkau, Ludwigshafen, DE;
Thomas Heidenfelder, Dannstadt-Schauernheim, DE;
Alexander Göthlich, Mannheim, DE;
Jens Haas, Ludwigshafen, DE;
Frank Klippel, Ludwigshafen, DE;
Gunnar Schornick, Neuleiningen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Process for the passivation of metallic surfaces by treatment of the surface with an acidic, aqueous preparation which comprises at least one water-soluble acid group-containing polymer and Zn, Ca, Mg or Al ions, said process being in particular a continuous process for the passivation of strip metals.