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. 21, 2021
Filed:
Jan. 18, 2017
Applicant:
Chemetall Gmbh, Frankfurt, DE;
Inventors:
Olaf Dahlenburg, Frankfurt am Main, DE;
Lisa Schmeier, Frankfurt am Main, DE;
Assignee:
Chemetall GmbH, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 22/00 (2006.01); C23C 22/18 (2006.01); C23C 22/36 (2006.01); C25D 13/20 (2006.01); C23C 22/78 (2006.01); C23C 22/82 (2006.01); C25D 5/48 (2006.01);
U.S. Cl.
CPC ...
C23C 22/182 (2013.01); C23C 22/362 (2013.01); C23C 22/364 (2013.01); C23C 22/365 (2013.01); C23C 22/78 (2013.01); C23C 22/82 (2013.01); C25D 5/48 (2013.01); C25D 13/20 (2013.01);
Abstract
Described herein is a method for phosphating of a metallic surface, wherein a metallic surface, optionally after cleaning and/or activation, is first treated with an acidic, aqueous, substantially nickel-free phosphating composition that includes zinc ions, manganese ions, iron(III) ions and phosphate ions, and is thereafter optionally rinsed and/or dried. Also described herein are a corresponding phosphating composition and a correspondingly phosphate-coated metallic surface.