Patents by Inventor Colette Douzon

Colette Douzon 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).

  • Polymers derived from crosslinked polystyrenes and dextrans, their methods of preparation and their applications for the analysis and purification of molecules of biological origin
    Patent number: 5019269
    Abstract: These resins derived from a crosslinked styrene (co)-polymer, or from a crosslinked dextran, comprise a (co)-polymer chain which is substituted with one or more groups, which may be identical or different, belonging to the following categories: --Z--A.sub.1 ; --Z--A.sub.2 ; --Z--A.sub.1 --Z'--A.sub.2 ; --Z--A.sub.1 --A.sub.3 --A.sub.2 ; --Z--A.sub.1 --A.sub.4, where Z=spacer chain, Z'=linking chain, A.sub.1 =phosphate residue, A.sub.2 =residue of purine or pyrimidine base, A.sub.3 =sugar residue and A.sub.4 =residue of a molecule participating in the polar structure of various phospholipids. These resins are applicable for the analysis and purification of molecules of biological origin, in particular as a stationary phase in ion-exchange and affinity chromatography, especially for carrying out the fractionation of protein mixtures.
    Type: Grant
    Filed: March 21, 1990
    Date of Patent: May 28, 1991
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Didier Letourneur, Colette Douzon, Veronique Migonney, Daniel A. Muller, Marcel Jozefowicz
  • Polymers derived from crosslinked polystyrenes and dextrans, their methods of preparation and their applications for the analysis and purification of molecules of biological origin
    Patent number: 4950712
    Abstract: These resins derived from a crosslinked styrene (co)-polymer, or from a crosslinked dextran, comprise a (co)-polymer chain which is substituted with one or more groups, which may be identical or different, belonging to the following categories: --Z--A.sub.1 ; --Z--A.sub.2 ; --Z--A.sub.1 --Z'--A.sub.2 ; --Z--A.sub.1 --A.sub.3 --A.sub.2 ; --Z--A.sub.1 --A.sub.4, where Z=spacer chain, Z'=linking chain, A.sub.1 =phosphate residue, A.sub.2 =residue of purine or pyrimidine base, A.sub.3 =sugar residue and A.sub.4 =residue of a molecule participating in the polar structure of various phospholipids. These resins are applicable for the analysis and purification of molecules of biological origin, in particular as a stationary phase in ion-exchange and affinity chromatography, especially for carrying out the fractionation of protein mixtures.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: August 21, 1990
    Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Didier Letourneur, Colette Douzon, Veronique Migonney, Daniel A. Muller, Marcel Jozefowicz