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:
Sep. 13, 1988
Filed:
Mar. 03, 1987
Applicant:
Inventors:
Thomas C Bissot, Newark, DE (US);
James T Keating, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C25B / ;
U.S. Cl.
CPC ...
204296 ; 156315 ; 156334 ; 204 98 ; 204128 ; 204283 ;
Abstract
A presoaked perhalogenated polymer cation exchange membrane containing at least one type of acid groups, carboxyl or sulfonyl, is bonded to other articles such as edge-reinforcing tape, gasket, electrolytic cell frame, etc., by means of a pressure-sensitive adhesive material from the group of butyl rubber, styrene-butadiene rubber, and polyacrylate rubber. Presoaking of the membranes is done either in water or in an aqueous alkaline solution.