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:
Aug. 02, 2005
Filed:
Apr. 13, 2001
Ellenio Mischi, Rosignano Solvay, IT;
Davide Mantione, Bahia Blanca (P.cia Buenos Aires), AR;
Alessandra Pastacaldi, Rosignano Solvay, IT;
Luc Botte, Rosignano Solvay, IT;
Ellenio Mischi, Rosignano Solvay, IT;
Davide Mantione, Bahia Blanca (P.cia Buenos Aires), AR;
Alessandra Pastacaldi, Rosignano Solvay, IT;
Luc Botte, Rosignano Solvay, IT;
SOLVAY (Societe Anonyme), Brussels, BE;
Abstract
A process for producing a bipolar membrane is described in which a cationic membrane undergoes a treatment with a salt from a group 8 metal, an anionic membrane undergoes a treatment with a salt of a transition metal not belonging to group 8, and then the two membranes are conjoined and, before and/or after having been conjoined, the membranes are brought into contact with a treatment solution selected from alkaline aqueous solutions, aqueous metal sulphate solutions and aqueous metal sulphite solutions.