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. 03, 2018
Filed:
Feb. 13, 2015
Applicant:
Ewald Doerken Ag, Herdecke, DE;
Inventors:
Marcel Roth, Duesseldorf, DE;
Christopher Koester, Herdecke, DE;
Ingo Klueppel, Bochum, DE;
Verena Grossmann, Herdecke, DE;
Gerhard Reussmann, Essen, DE;
Assignee:
Ewald Doerken AG, Herdecke, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 22/73 (2006.01); C23C 22/07 (2006.01); C23C 22/36 (2006.01); C23C 22/42 (2006.01); C23C 22/44 (2006.01); C23C 22/60 (2006.01); C23C 22/80 (2006.01); C23C 22/34 (2006.01); C23C 22/46 (2006.01); C23C 22/83 (2006.01);
U.S. Cl.
CPC ...
C23C 22/73 (2013.01); C23C 22/07 (2013.01); C23C 22/34 (2013.01); C23C 22/36 (2013.01); C23C 22/42 (2013.01); C23C 22/44 (2013.01); C23C 22/46 (2013.01); C23C 22/60 (2013.01); C23C 22/80 (2013.01); C23C 22/83 (2013.01); C23C 2222/10 (2013.01); C23C 2222/20 (2013.01); Y10T 428/265 (2015.01); Y10T 428/31663 (2015.04);
Abstract
A method for the manufacture of a substrate provided with a chromium VI-free and a cobalt-free passivation by the application of a first acidic passivation and a second alkaline passivation, containing a silane-modified and/or a siloxane modified silicate, with which an improved protection against corrosion is achieved, an aqueous, acidic composition for passivating and a passivated substrate, and a device for applying the passivation.