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. 26, 2004
Filed:
Jan. 17, 2002
Applicant:
Inventors:
Oscar Khaselev, Monmouth Junction, NJ (US);
Igor S. Zavarine, Brooklyn, NY (US);
Yun Zhang, Warren, NJ (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 3/60 ; C25D 3/58 ; C23C 1/800 ;
U.S. Cl.
CPC ...
C25D 3/60 ; C25D 3/58 ; C23C 1/800 ;
Abstract
In accordance with the present invention, an electroplating solution is provided for electroplating satin bright tin-copper alloy solder coatings at high speed. The preferred solution comprises sulfonic acid, tin sulfonate, copper sulfonate, non-ionic surfactant, satin brightener and an antioxidant catechol. The preferred surfactant is polyoxyethylene-block-polyoxypropylene. The preferred satin brightener is formed by the oxidation of an aqueous solution of 1-phenyl-3-parazolidinone. The preferred sulfonic acid is methanesulfonic acid.