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:
Dec. 06, 1977
Filed:
Jul. 21, 1976
Applicant:
Inventor:
William E Rosenberg, Strongsville, OH (US);
Assignee:
Columbia Chemical Corporation, Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ;
U.S. Cl.
CPC ...
204 / ; 204D / ; 260511 ; 2606 / ; 252 791 ;
Abstract
An aqueous acid tin electroplating bath contains as a brightening agent compounds having the formula: ##STR1## where O is oxygen and A is selected from the class consisting of hydrogen, hydroxy alkyl, polyalkoxy, and 3-sulfopropyl, certain emulsifying agents and certain synergistically acting carboxylic acids, amides and esters to give extremely bright electrodeposits.