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:
May. 23, 2017
Filed:
Dec. 08, 2015
Applicant:
Enthone Inc., West Haven, CT (US);
Inventors:
Stefan Schäfer, Solingen, DE;
Thomas B. Richardson, Killingworth, CT (US);
Assignee:
Other;
Primary Examiner:
Int. Cl.
CPC ...
C25D 3/56 (2006.01); C25D 3/46 (2006.01);
U.S. Cl.
CPC ...
C25D 3/46 (2013.01);
Abstract
The invention relates to a cyanide-free electrolyte composition for depositing a silver or silver alloy layer on a substrate as well as a method for depositing silver or silver alloy layers with a cyanide-free electrolyte composition. The electrolyte composition according to the invention comprises at least one silver ion source, a sulfonic acid and/or a sulfonic acid derivative, a wetting agent and a hydantoin. The silver or silver alloy layers deposited from the inventive electrolyte composition by the method according to the invention are dull and ductile.