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. 16, 2019
Filed:
Mar. 21, 2015
Audi Ag, Ingolstadt, DE;
Michael Grabowski, Schwabach, DE;
Daniel Blücher, Trondheim, NO;
Michael Korte, Ingolstadt, DE;
Matthias Brettmann, Leinburg, DE;
Sannakaisa Virtanen, Erlangen, DE;
AUDI AG, Ingolstadt, DE;
Abstract
A method for passivating a metal surface of a light-weight metal part is disclosed, wherein a conversion layer is applied to the surface of the light-weight metal part in a passivation step. A passivation step is carried out wherein an aqueous passivation solution is used to create a calcium phosphate-containing conversion layer () on the metal surface of the part, said conversion layer comprising oxides and hydroxides from the material of the part and from the passivation solution and containing amino acids.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile