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. 13, 2003
Filed:
May. 21, 2001
Applicant:
Inventors:
Hyman D. Gillman, Spring City, PA (US);
Brenda Fernandes, Cranston, RI (US);
Kazimierz Wikiel, Wakefield, RI (US);
Assignee:
Technic, Inc., Cranston, RI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 3/02 ;
U.S. Cl.
CPC ...
C25D 3/02 ;
Abstract
The use of alkali metal, alkaline earth metal, ammonium and substituted ammonium salts of alkyl and alkanol sulfonic acids as additives in pure metal and metal alloy sulfate electroplating baths has a number of unexpected benefits including wider useful current density range, improved appearance and in the case of tin improved oxidative stability. The metals and alloys include but are not limited to tin, nickel, copper, chromium, cadmium, iron, rhodium, ruthenium, iron/zinc and tin/zinc.