Other

Centre National De La Recherche Scientifique

Societe Nationale Elf Aquitaine

Joseph Portier

Guy Campet

Claude Delmas

Jean-Michel Chabagno

Etienne Duguet

Jean Salardenne

Sophie Tuffet

David Georges De Souza

Stéphane Mornet

Jacques Bonnet

Thierry Noel

Stephane Mornet

The invention relates to aqueous dispersions, comprising particles based on a magnetic iron oxide with dimensions of &#x2266;20 nm, the surface of which is modified by the grafting of aminated groups R with a covalent bonding to the surface of said particles, wherein the isoelectronic point of particles with such a modified surface is &#x2267;10. The invention further relates to a method for production of said aqueous suspensions and a method for modification of the surface of the particles present in said dispersions, in particular, by the immobilisation of polysaccharides such as dextrans, particularly for the formulation of magnetic compositions which may be administered in vivo and in particular for the formulation of injectable compositions of contrast agents for MRI.

Ferrofluids stable in neutral media and modified ferrofluids modifies obtained by modification of the surface of the particles of said ferrofluids

A process for the long-term preservation of DNA molecules and a packaging for practicing the same provides for extraction, purification and dehumidification of the DNA by any suitable technique carrying out an encapsulation in a sealed corrosion-proof metallic capsule of the DNA molecule.

Method for prolonged storage of DNA molecules and packaging implementing said method

Target component for cathode sputtering

Growing community of inventors

Gradignan, France

Joseph Portier