Patents by Inventor Herv{acute over (e)} Chollet

Herv{acute over (e)} Chollet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

Polyazacycloalkanes, tri-, tetra- or penta-azamacrocyclic complexes, processes for the production of these substituted or unsubstituted polyazacycloalkanes grafted to a support and uses of polyazacycloalkanes and the aforementioned complexes

Patent number: 6174505

Abstract: The invention relates to polyazacycloalkanes having 3, 4 or 5 nitrogen atoms, tri-, tetra- or penta-azamacrocyclic transition metal complexes and processes for the production of said polyazacycloalkanes. The object of the invention is to form polyazacycloalkanes able to trap metal cations and in particular U, Pu, Am, Ce, Eu, Al, Gd, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ag, Cd, Sn, Au, Mg or Pb or complexes able to trap in particular oxygen in a gaseous mixture. The invention more particularly applies to the treatment of liquid effluents from nuclear power stations.

Type: Grant

Filed: November 12, 1998

Date of Patent: January 16, 2001

Assignee: Commissariat a l'Energie Atomique

Inventors: Roger G{acute over (u)}ilard, Herv{acute over (e)} Chollet, Philippe Guiberteau, Panayotis Cocolios

Polyazacycloalkanes, tri-, tetra- or penta-azamacrocyclic complexes, processes for the production of these substituted or unsubstituted polyazacycloalkanes grafted to a support and uses of polyazacycloalkanes and the aforementioned complexes