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:
Dec. 15, 2020
Filed:
Sep. 23, 2016
Applicant:
Macdermid Enthone Gmbh, Langenfeld, DE;
Inventors:
Andreas Konigshofen, Leverkusen, DE;
Ronny Kiefer, Klotze, DE;
Assignee:
MacDermid Enthone GmbH, Langenfeld, DE;
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/00 (2006.01); C25D 15/00 (2006.01); C25D 3/06 (2006.01); C25D 3/56 (2006.01); C25D 5/14 (2006.01);
U.S. Cl.
CPC ...
C25D 15/00 (2013.01); C25D 3/06 (2013.01); C25D 3/562 (2013.01); C25D 5/14 (2013.01); Y10T 428/24917 (2015.01);
Abstract
The invention relates to a corrosion protection layer system for metal surfaces, said layer system comprising as the two top most layers: a) a discontinuous nickel-phosphorus layer and b) a chromium layer plated from a trivalent chromium electrolyte solution, and method of producing such a corrosion protection layer system. The corrosion protection layer system provides corrosion resistance of the nickel-phosphorus layer against sodium chloride with the protection of the chromium layer produced from a trivalent process again magnesium salts, without the need for any post-treatment.