Patents by Inventor Christophe Coutanceau

Christophe Coutanceau 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).

  • Method for producing proton-conducting platinum particles with a large active surface area and surface-grafted with specific, proton-conducting polymers
    Patent number: 10673076
    Abstract: A specific method for preparing platinum particles grafted with proton-conducting polymers and use of these particles as catalysts for oxygen reduction.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: June 2, 2020
    Assignee: COMMISSARIAT À L'ÉNERGIE ATOMOIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Pierrick Buvat, Janick Bigarré, Christophe Coutanceau, Stève Baranton, Delphine Dru
  • METHOD FOR PRODUCING PROTON-CONDUCTING PLATINUM PARTICLES WITH A LARGE ACTIVE SURFACE AREA AND SURFACE-GRAFTED WITH SPECIFIC, PROTON-CONDUCTING POLYMERS
    Publication number: 20190109329
    Abstract: A specific method for preparing platinum particles grafted with proton-conducting polymers and use of these particles as catalysts for oxygen reduction.
    Type: Application
    Filed: April 3, 2017
    Publication date: April 11, 2019
    Inventors: Pierrick Buvat, Janick Bigarré, Christophe Coutanceau, Stève Baranton, Delphine Dru
  • Method for preparing proton-conducting particles capable of catalyzing the reduction of oxygen or the oxidation of hydrogen by grafting proton-conducting polymers to the surface of the particles
    Patent number: 9446392
    Abstract: The invention relates to a method for preparing particles comprising a material capable of catalyzing the reduction of oxygen or the oxidation of hydrogen, said particles being functionalized by polymers comprising at least one repeating unit bearing at least one proton-conducting group, and said particles being covalently bonded to a carbon material, said method comprising: a step a) of contacting particles, comprising a material capable of catalyzing the reduction of oxygen or the oxidation of hydrogen, with a polymer comprising at least one repeating unit bearing at least one proton-conducting group and comprising at least one portion corresponding to an organic radical of a compound that is an initiator for ATRP polymerization, said radical comprising at least one group capable of being grafted onto the surface of said particles, whereby particles, onto which polymers comprising at least one repeating unit bearing at least one proton-conducting group are grafted, are obtained.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: September 20, 2016
    Assignees: COMMISARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Pierrick Buvat, Anne-Claire Ferrandez, Steve Baranton, Christophe Coutanceau
  • Method for preparing proton-conducting particles capable of catalyzing the reduction of oxygen or the oxidation of hydrogen
    Patent number: 9421531
    Abstract: A method for preparing particles includes a material capable of catalyzing the reduction of oxygen or the oxidation of hydrogen, the particles being functionalized by polymers including at least one repeating unit bearing at least one proton-conducting group, and the particles being covalently bonded to a carbon material. The method includes the following consecutive steps: a) a step of contacting particles, comprising a material capable of catalyzing the reduction of oxygen or the oxidation of hydrogen, with a compound that is an initiator for ATRP polymerization, the compound comprising at least one group capable of being grafted onto the surface of the particles, whereby particles, onto which a radical of the initiator compound is grafted, are obtained; and b) a step of contacting the particles obtained in a) with at least one monomer having at least one proton-conducting group, whereby the polymerization of the monomer from the above-mentioned radicals occurs.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: August 23, 2016
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Pierrick Buvat, Anne-Claire Ferrandez, Steve Baranton, Christophe Coutanceau
  • METHOD FOR PREPARING PROTON-CONDUCTING PARTICLES CAPABLE OF CATALYZING THE REDUCTION OF OXYGEN OR THE OXIDATION OF HYDROGEN BY GRAFTING PROTON-CONDUCTING POLYMERS TO THE SURFACE OF THE PARTICLES
    Publication number: 20140309318
    Abstract: The invention relates to a method for preparing particles comprising a material capable of catalyzing the reduction of oxygen or the oxidation of hydrogen, said particles being functionalized by polymers comprising at least one repeating unit bearing at least one proton-conducting group, and said particles being covalently bonded to a carbon material, said method comprising: a step a) of contacting particles, comprising a material capable of catalyzing the reduction of oxygen or the oxidation of hydrogen, with a polymer comprising at least one repeating unit bearing at least one proton-conducting group and comprising at least one portion corresponding to an organic radical of a compound that is an initiator for ATRP polymerization, said radical comprising at least one group capable of being grafted onto the surface of said particles, whereby particles, onto which polymers comprising at least one repeating unit bearing at least one proton-conducting group are grafted, are obtained.
    Type: Application
    Filed: November 5, 2012
    Publication date: October 16, 2014
    Inventors: Pierrick Buvat, Anne-Claire Ferrandez, Steve Baranton, Christophe Coutanceau
  • METHOD FOR PREPARING PROTON-CONDUCTING PARTICLES CAPABLE OF CATALYZING THE REDUCTION OF OXYGEN OR THE OXIDATION OF HYDROGEN
    Publication number: 20140309386
    Abstract: A method for preparing particles includes a material capable of catalyzing the reduction of oxygen or the oxidation of hydrogen, the particles being functionalized by polymers including at least one repeating unit bearing at least one proton-conducting group, and the particles being covalently bonded to a carbon material. The method includes the following consecutive steps: a) a step of contacting particles, comprising a material capable of catalyzing the reduction of oxygen or the oxidation of hydrogen, with a compound that is an initiator for ATRP polymerization, the compound comprising at least one group capable of being grafted onto the surface of the particles, whereby particles, onto which a radical of the initiator compound is grafted, are obtained; and b) a step of contacting the particles obtained in a) with at least one monomer having at least one proton-conducting group, whereby the polymerization of the monomer from the above-mentioned radicals occurs.
    Type: Application
    Filed: November 5, 2012
    Publication date: October 16, 2014
    Inventors: Pierrick Buvat, Anne-Claire Ferrandez, Steve Baranton, Christophe Coutanceau