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. 20, 2006
Filed:
Sep. 10, 2001
Noël Ozanne, Grenoble, FR;
Marc Lionel Lemaire, Villeurbanne, FR;
Alain Jean-louis Guy, Pontcarre, FR;
Jacques Henri Foos, Orsay, FR;
Stéphane Pellet-rostaing, Villeurbanne, FR;
Frédéric Chitry, Villeurbanne, FR;
Noël Ozanne, Grenoble, FR;
Marc Lionel Lemaire, Villeurbanne, FR;
Alain Jean-Louis Guy, Pontcarre, FR;
Jacques Henri Foos, Orsay, FR;
Stéphane Pellet-Rostaing, Villeurbanne, FR;
Frédéric Chitry, Villeurbanne, FR;
Compagnie Europeenne du Zirconium CEZUS, Courbevoie, FR;
Abstract
A method for separating a metal (a) from a metal (2), preferably zirconium from hafnium, which consists in dissolving said metals in an aqueous solution wherein said metals are in a state preventing them from passing through a nanofiltration membrane; treating the aqueous medium with a ligand, for example EDTA, which is complexed with metal (1) and/or metal (2), then in passing the resulting treated medium on a filtering membrane allowing through the ligand-metal complexes, but retaining the metals not complexed with the ligand.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile