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:
Jun. 22, 1993
Filed:
Nov. 20, 1991
Applicant:
Inventors:
Hartwig Voss, Frankenthal, DE;
Rolf Schneider, Mannheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
204131 ; 2041824 ; 204 72 ;
Abstract
Organic sulfonic acids are liberated from aqueous solutions of their salts by a process in which the aqueous organosulfonate solution is subjected to electrodialysis with the aid of an electrodialysis cell which consists of diluate chambers DC, acid chambers AC and base chambers BC according to the sequence I