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:
Apr. 26, 1977
Filed:
May. 07, 1975
Applicant:
Inventors:
Assignee:
Oronzio de Nora Impianti Elettrochimici S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25B / ;
U.S. Cl.
CPC ...
428443 ; 427341 ; 204296 ; 260 / ; 260 / ;
Abstract
Novel composite material comprising a supporting matrix of inert fibers impregnated with a halogenated copolymer of divinyl benzene and styrene containing sulfonic acid groups copolymerized directly on the fiber material in the absence of a solvent which remains dimensionally stable under electrolysis conditions in diaphragm cells and the method of making them and the method of electrolyzing alkali metal halide solutions in a diaphragm cell equipped with a diaphragm made of said impregnated composite diaphragm material.