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. 11, 2012
Filed:
Jan. 23, 2007
Applicants:
Lee Capper, Wolverhampton, GB;
Andreas Noack, Berlin, DE;
Inventors:
Lee Capper, Wolverhampton, GB;
Andreas Noack, Berlin, DE;
Assignee:
Atotech Deutschland GmbH, Berlin, DE;
Primary Examiner:
Int. Cl.
CPC ...
C23C 22/30 (2006.01); C23C 22/48 (2006.01);
U.S. Cl.
CPC ...
Abstract
For producing corrosion resistant yellow passivate layers on zinc and zinc alloy surfaces, an aqueous reaction solution is utilized that contains trivalent chromium ions, at least one acid as well as at least one heteroaromatic compound selected from the group comprising nicotinic acid, the salts and derivatives thereof.