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. 23, 1987
Filed:
Oct. 22, 1985
Applicant:
Inventors:
Philippe Dagard, Marly Le Roi, FR;
Thierry V Cohen, Paris, FR;
Assignee:
Framatome & Cie., Courbevoie, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25D / ; B01D / ;
U.S. Cl.
CPC ...
2041823 ; 2041824 ; 204301 ;
Abstract
The concentration of an acid in a weakly ionized aqueous solution, more particularly the concentration of boric acid in solution in demineralized water from the primary circuit of a pressurized water nuclear reactor, is modified by effecting simultaneously the dissociation of the acid and the electrodialysis of the solution using at least one electrodialysis membrane comprising a polymer support such as PTFE or FEP and having aminated groups introduced for example according to a process comprising a step of grafting.