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:
Jan. 21, 1986
Filed:
Apr. 15, 1985
Applicant:
Inventors:
Fred I Nobel, Sands Point, NY (US);
Barnet Ostrow, Roslyn, NY (US);
David N Schram, Freeport, NY (US);
Assignee:
LeaRonal, Inc., Freeport, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25D / ; C25D / ; C25D / ;
U.S. Cl.
CPC ...
204 444 ; 204 53 ; 204 / ;
Abstract
This invention relates to the electrodeposition of tin, lead and particularly tin-lead alloys from an electroplating bath comprising a lead and/or tin alkylsulfonate, an alkylsulfonic acid in a sufficient amount to impart a pH below about 3 to the bath, and various additives to improve the brightness of the deposits, the useful current density ranges, and/or the solderability of tin-lead alloy deposits including quaternary nitrogen wetting agents containing a fatty acid radical, alkylene oxides, pyridine compounds, aromatic aldehydes, acetaldehyde and/or a bismuth compound.