Patents by Inventor Celine Poncet-Legrand

Celine Poncet-Legrand 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).

  • Nanometric or mesoscopic dissymetric particles, and method for preparing same
    Patent number: 8029897
    Abstract: The invention relates to nanometric or mesoscopic dissymmetric particles, and to a method for preparing the same. The particles have an inorganic part A and a spherical organic part B bound by physicochemical or covalent interactions. Material A is a metal oxide, a metal or a metal chalcogenide. Material B is a polymer consisting of recurrent units derived from a vinyl compound. The particles are obtained by modifying the surface of material A particles with a coupling agent C having a function FC which exhibits affinity for the polymer, and contacting the modified inorganic particles with the precursor(s) of the polymer B, in the presence of a free radical initiator and of a surfactant in solution in a solvent.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: October 4, 2011
    Assignees: Centre National de la Recherche Scientifique, CPE Lyon Formation Continue et Recherche, Universite Paul Sabatier
    Inventors: Céline Poncet-Legrand, Serge Ravaine, Etienne Duguet, Elodie Bourgeat-Lami, Stéphane Reculusa, Christophe Mingotaud
  • Unsymmetrical Inorganic Particles, and Method for Producing the Same
    Publication number: 20080038176
    Abstract: The invention relates to unsymmetrical nanoscale or mesoscopic particles, and to a method for preparing the same. Said particles are characterized by a surface F1 and the zone Z2 carries groups F2 different from the groups F1, the zone Z1 being free of groups F2 and the zone Z2 being free of groups F1. The method of preparation comprises the following steps: 1) the zone Z2 of the surface of the initial particles is masked by fixing a polymer nodule thereto; 2) the masked particles obtained at the end of step 1) are treated in order to modify the nonmasked surface zone Z1 thereof; 3) the polymer nodule is removed after modifying the zone Z1; 4) optionally, the surface of the zone Z2 of the particles is modified following the demasking process.
    Type: Application
    Filed: November 4, 2004
    Publication date: February 14, 2008
    Applicants: Centre National De La Recherche Scientifique, Cpe Lyon Formation Continue Et Recherche, Universite Paul Sabatier, Universite Des Sciences Et Technologies
    Inventors: Etienne Duguet, Celine Poncet-Legrand, Serge Ravaine, Elodie Bourgeat-Lami, Stephane Reculusa, Christophe Mingotaud, Marie-Helene Delville, Franck Pereira
  • Nanometric or mesoscopic dissymetric particles, and method for preparing same
    Publication number: 20060134420
    Abstract: The invention relates to nanometric or mesoscopic dissymmetric particles, and to a method for preparing the same. The particles have an inorganic part A and a spherical organic part B bound by physicochemical or covalent interactions. Material A is a metal oxide, a metal or a metal chalcogenide. Material B is a polymer consisting of recurrent units derived from a vinyl compound. The particles are obtained by modifying the surface of material A particles with a coupling agent C having a function FC which exhibits affinity for the polymer, and contacting the modified inorganic particles with the precursor(s) of the polymer B, in the presence of a free radical initiator and of a surfactant in solution in a solvent.
    Type: Application
    Filed: October 28, 2003
    Publication date: June 22, 2006
    Inventors: Celine Poncet-Legrand, Serge Ravaine, Etienne Duguet, Elodie Bourgeat-Lami, Stephane Reculusa, Christophe Mingotaud