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:
Oct. 09, 2007
Filed:
May. 18, 2004
Ronald J. Morrissey, Cranston, RI (US);
Ronald J. Morrissey, Cranston, RI (US);
Technic, Inc., Cranston, RI (US);
Abstract
The invention relates to an electroplating solution for providing a deposit of an alloy of gold and tin. This solution includes an aqueous solvent in which gold is present in the form of a solution soluble cyanide complex and tin is present in the form of a solution soluble organotin complex. 2,2'-dipyridyl is present as an additive that allows the codeposition of useful gold-tin alloy compositions at current densities lower than would be possible in its absence, given the concentrations of the individual metallic components in the solution. This additive is generally used at a concentration of 0.1 to 1 grams per liter for imparting significant enhancements in providing gold-tin alloy deposits.