Patents by Inventor Christophe Flesch

Christophe Flesch 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).

  • Preparation of poly(ethylene oxide)-coated nanoparticles of maghemite
    Patent number: 8399021
    Abstract: The invention relates to a material consisting of an aqueous dispersion of PEG-coated nanoparticles of maghemite. The process for preparing said material consists in polymerizing ethylene oxide in the presence of nanoparticles of maghemite in an aqueous dispersion. The polymerization is initiated using reactive groups which are capable of initiating the polymerization of ethylene oxide without the addition of a catalyst, and which are attached to the nanoparticles of maghemite by means of a coupling agent comprising an alkoxysilyl group and one or more of said reactive groups. Applications: contrast agent for MRI.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: March 19, 2013
    Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Universite de Haute Alsace
    Inventors: Christelle Delaite, Christophe Flesch, Philippe Dumas
  • PREPARATION OF POLY(ETHYLENE OXIDE)-COATED NANOPARTICLES OF MAGHEMITE
    Publication number: 20100015059
    Abstract: The invention relates to a material consisting of an aqueous dispersion of PEG-coated nanoparticles of maghemite. The process for preparing said material consists in polymerizing ethylene oxide in the presence of nanoparticles of maghemite in an aqueous dispersion. The polymerization is initiated using reactive groups which are capable of initiating the polymerization of ethylene oxide without the addition of a catalyst, and which are attached to the nanoparticles of maghemite by means of a coupling agent comprising an alkoxysilyl group and one or more of said reactive groups. Applications: contrast agent for MRI.
    Type: Application
    Filed: February 7, 2007
    Publication date: January 21, 2010
    Inventors: Christelle Delaite, Christophe Flesch, Philippe Dumas