Patents by Inventor Didier Doucet

Didier Doucet 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).

  • Iodinated polymers, processes for preparing them and their applications as contrast media
    Patent number: 5886169
    Abstract: Iodized polymers, comprising a skeleton consisting of a dextrane onto which are grafted groups of the formula (I). Application of the these compounds as contrast products.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: March 23, 1999
    Assignee: Guerbet S.A.
    Inventors: Dominique Paris, Jean-Maxime Nigretto, Bruno Bonnemain, Dominique Meyer, Didier Doucet
  • Nitrogen-containing cyclic ligands, metallic complexes formed by these ligands, diagnostic compositions containing these complexes and process for the preparation of the ligands
    Patent number: 5417960
    Abstract: The subject of the invention is nitrogen-containing cyclic ligands and metal complexes formed by these ligands, the uses of these complexes as magnetic resonance imaging (MRI) agents, as X-ray contrast agents and as chemical shift reagents in vivo.
    Type: Grant
    Filed: February 3, 1994
    Date of Patent: May 23, 1995
    Assignee: Guerbet S.A.
    Inventors: Nichel Schaefer, Didier Doucet, Bruno Bonnemain, Dominique Meyer, Dominique Paris
  • Iodinated polymers with dextran skeleton, processes for their preparation and their uses as contrast products
    Patent number: 5126440
    Abstract: The invention relates to iodine-containing polymers including a skeleton comprised of a dextrane to which are grafted groups having the formula (I), wherein the groups R are simultaneously groups derived from triiodobenzenic amines and groups derived from aliphatic amines.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: June 30, 1992
    Assignee: Guerbert S.A.
    Inventors: Dominique Paris, Michel Schaefer, Didier Doucet, Dominique Meyer
  • Nitrogen-containing cyclic ligands
    Patent number: 5049667
    Abstract: The subject of the invention is nitrogen-containing cyclic ligands and metal complexes formed by these ligands, the uses of these complexes as magnetic resonance imaging (MRI) agents, as X-ray contrast agents and as chemical shift reagents in vivo.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: September 17, 1991
    Assignee: Guerbet S.A.
    Inventors: Michel Schaefer, Didier Doucet, Bruno Bonnemain, Dominique Meyer, Dominique Paris
  • Novel iodinated non-ionic triiodobenzene compounds and contrast media containing them
    Patent number: 5043152
    Abstract: The invention relates to novel non-ionic compounds of formula ##STR1## These compounds can be used as contrast media.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: August 27, 1991
    Assignee: Guerbet S.A.
    Inventors: Michel Schaefer, Maryse Dugast-Zrihen, Michel Guillemot, Didier Doucet, Dominique Meyer