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:
Nov. 16, 2021
Filed:
Nov. 22, 2017
Applicant:
Macdermid Enthone Gmbh, Langenfeld, DE;
Inventors:
Frank Noffke, Wuppertal, DE;
Christoph Werner, Sunnyvale, CA (US);
Andreas Königshofen, Leverkusen, DE;
Assignee:
MacDermid Enthone GmbH, Langenfeld, DE;
Primary Examiner:
Int. Cl.
CPC ...
C23C 18/20 (2006.01); C23C 18/24 (2006.01); C23C 18/30 (2006.01); C23C 18/34 (2006.01);
U.S. Cl.
CPC ...
C23C 18/2086 (2013.01); C23C 18/24 (2013.01); C23C 18/30 (2013.01); C23C 18/34 (2013.01);
Abstract
The present invention relates to a chrome free etch for plating on plastic processes, wherein plastic surfaces are contacted in a first etching step with an etching solution at least comprising Mn(IV)-ions and, in a second etching step, with a solution at least comprising Mn(III)- and Mn(VII)-ions prior to the metal plating step.