Patents by Inventor Christian Guizard
Christian Guizard 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).
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Patent number: 11033863Abstract: A filter for the filtration of a fluid, such as a liquid, includes or composed of a support element made of a porous ceramic material, the element having a tubular or parallelepipedal shape delimited by an external surface and including, in its internal portion, a set of adjacent channels with axes parallel to one another and separated from one another by walls of the porous inorganic material, wherein at least a portion of the channels and/or at least a portion of the external surface are covered with a porous separating membrane layer, wherein the layer is made of a material essentially composed of sintered grains of silicon carbide (SiC), and the weight content of elemental oxygen of the layer is less than 0.5%.Type: GrantFiled: December 18, 2015Date of Patent: June 15, 2021Assignees: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEAN, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE DE MONTPELLIER, ECOLE NATIONALE SUPERIEURE DE CHIMIE DE MONTPELLIERInventors: Daniel Urffer, Christian Guizard
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Publication number: 20170348646Abstract: A filter for the filtration of a fluid, such as a liquid, includes or composed of a support element made of a porous ceramic material, the element having a tubular or parallelepipedal shape delimited by an external surface and including, in its internal portion, a set of adjacent channels with axes parallel to one another and separated from one another by walls of the porous inorganic material, wherein at least a portion of the channels and/or at least a portion of the external surface are covered with a porous separating membrane layer, wherein the layer is made of a material essentially composed of sintered grains of silicon carbide (SiC), and the weight content of elemental oxygen of the layer is less than 0.5%.Type: ApplicationFiled: December 18, 2015Publication date: December 7, 2017Inventors: Daniel URFFER, Christian GUIZARD
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Patent number: 9101916Abstract: Catalyst system suitable especially for the removal of CO compounds, comprising or consisting of an oxide, preferably of fluorite crystalline structure, conforming to the following molar formulation: Ce1?uMyAzDvO2?x, wherein Ce is cerium, A represents at least one element possessing a plurality of oxidation states and selected from Ti, Ga, In, V, Cr, Mn, Fe, Sn, Co, Ni, Cu, M represents at least one element selected from Gd, Y, Sc, Sm, Nd, Pr, Zn, D represents at least one element other than A and selected from Pt, Pd, Rh, Ru, Cu, Fe, Ag, and Au, u is between 0.05 and 0.45, y is between 0.01 and 0.4, Z is greater than 0 and less than 0.4, v is between 0.001 and 0.4, and x is greater than 0.Type: GrantFiled: December 14, 2012Date of Patent: August 11, 2015Assignees: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Agnes Princivalle, Daniel Aubert, Christian Guizard, Helena Kaper, Michaela Klotz
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Publication number: 20150111729Abstract: Catalyst system suitable especially for the removal of CO compounds, comprising or consisting of an oxide, preferably of fluorite crystalline structure, conforming to the following molar formulation: Ce1?uMyAzDvO2?x, wherein Ce is cerium, A represents at least one element possessing a plurality of oxidation states and selected from Ti, Ga, In, V, Cr, Mn, Fe, Sn, Co, Ni, Cu, M represents at least one element selected from Gd, Y, Sc, Sm, Nd, Pr, Zn, D represents at least one element other than A and selected from Pt, Pd, Rh, Ru, Cu, Fe, Ag, and Au, u is between 0.05 and 0.45, y is between 0.01 and 0.4, Z is greater than 0 and less than 0.4, v is between 0.001 and 0.4, and x is greater than 0.Type: ApplicationFiled: December 14, 2012Publication date: April 23, 2015Applicants: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Agnes Princivalle, Daniel Aubert, Christian Guizard, Helena Kaper, Michaela Klotz
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Patent number: 8968667Abstract: The present invention relates to an electrocatalytic system for the joint treatment of oxidizing polluting entities of the NOx type and reducing polluting entities of the hydrocarbons HC or CO type present in a gas to be purified, in particular an exhaust gas resulting from a combustion engine, said system comprising: a catalyst A for reduction of the polluting entities of the NOx type, a catalyst B for oxidation of the polluting entities of the hydrocarbons HC type and CO, a compound E which conducts electrons and ions by oxide ions, said catalysts A and B being in contact with the compound E, said compound E being composed of an oxide which conducts ions and electrons corresponding to the molar formulation: Ce1-y-zO2-xMyNz in which Ce is cerium, M is an element chosen from: Gd, Y, Sc, Sm, La, Pr, Nd, Er or Tb, y is between 0.01 and 0.4, N is an element having several degrees of valency chosen from: Ti, V, Cr, Mn, Fe, Co, Ni or Cu, z is less than 0.4 and x is greater than 0.05.Type: GrantFiled: June 16, 2011Date of Patent: March 3, 2015Assignees: Saint-Gobain Centre de Recherches et d'Etudes Europeen, Centre National de la Recherche Scientifique, Universite Claude Bernard-Lyon 1Inventors: Agnes Princivalle, Philippe Vernoux, Abdelkader Hadjar, Christian Guizard
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Patent number: 8802044Abstract: The invention relates to a filtration structure, for filtering a gas coming from a diesel engine, which is laden with gaseous pollutants of the nitrogen oxide NOx type and with solid particles, of the particulate filter type, said filtration structure being characterized in that it includes a catalytic system comprising at least one noble metal or transition metal suitable for reducing the NOx and a support material, in which said support material comprises or is made of a zirconium oxide partially substituted with a trivalent cation M3+ or with a divalent cation M?2+, said zirconium oxide being in a reduced, oxygen-sub-stoichiometric, state.Type: GrantFiled: December 16, 2009Date of Patent: August 12, 2014Assignees: Saint-Gobain Centre de Recherches et d'Etudes Europeen, Centre National de la Recherche ScientifiqueInventors: Philippe Vernoux, Abdelkader Hadjar, Agnes Princivalle, Christian Guizard
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Patent number: 8591845Abstract: The present invention relates to the use, for the reduction of oxidizing contaminating entities of the NOx type, in particular NO2, present in a gas to be purified, of a catalytic system comprising or composed of an oxide corresponding to the molar formulation: Ce1-y-zO2-xMyNz, in which: Ce is cerium, M is an element chosen from: Gd, Y, Sc, Sm, La, Pr, Nd, Er or Tb, y is between 0.01 and 0.4, N is an element having several degrees of valency chosen from: Ti, V, Cr, Mn, Fe, Co, Ni or Cu, z is less than 0.4, x is greater than 0.05.Type: GrantFiled: June 16, 2011Date of Patent: November 26, 2013Assignees: Saint-Gobain Centre de Recherches et d'Etudes Europeen, Centre National de la Recherche Scientifique, Universite Claude Bernard-Lyon 1Inventors: Agnes Princivalle, Philippe Vernoux, Abdelkader Hadjar, Christian Guizard
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Publication number: 20130142702Abstract: The present invention relates to an electrocatalytic system for the joint treatment of oxidizing polluting entities of the NOx type and reducing polluting entities of the hydrocarbons HC or CO type present in a gas to be purified, in particular an exhaust gas resulting from a combustion engine, said system comprising: a catalyst A for reduction of the polluting entities of the NOx type, a catalyst B for oxidation of the polluting entities of the hydrocarbons HC type and CO, a compound E which conducts electrons and ions by oxide ions, said catalysts A and B being in contact with the compound E, said compound E being composed of an oxide which conducts ions and electrons corresponding to the molar formulation: Ce1-y-zO2-xMyNz in which Ce is cerium, M is an element chosen from: Gd, Y, Sc, Sm, La, Pr, Nd, Er or Tb, y is between 0.01 and 0.4, N is an element having several degrees of valency chosen from: Ti, V, Cr, Mn, Fe, Co, Ni or Cu, z is less than 0.4 and x is greater than 0.05.Type: ApplicationFiled: June 16, 2011Publication date: June 6, 2013Applicants: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, UNIVERSITE CLAUDE BERNARD - LYON 1, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Agnes Princivalle, Philippe Vernoux, Abdelkader Hadjar, Christian Guizard
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Publication number: 20130136676Abstract: The present invention relates to the use, for the reduction of oxidizing contaminating entities of the NOx type, in particular NO2, present in a gas to be purified, of a catalytic system comprising or composed of an oxide corresponding to the molar formulation: Ce1-y-zO2-xMyNz, in which: Ce is cerium, M is an element chosen from: Gd, Y, Sc, Sm, La, Pr, Nd, Er or Tb, y is between 0.01 and 0.4, N is an element having several degrees of valency chosen from: Ti, V, Cr, Mn, Fe, Co, Ni or Cu, z is less than 0.4, x is greater than 0.05.Type: ApplicationFiled: June 16, 2011Publication date: May 30, 2013Applicants: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEEN, UNIVERSITE CLAUDE BERNARD-LYON 1, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUEInventors: Agnes Princivalle, Philippe Vernoux, Abdelkader Hadjar, Christian Guizard
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Publication number: 20110250112Abstract: The invention relates to a filtration structure, for filtering a gas coming from a diesel engine, which is laden with gaseous pollutants of the nitrogen oxide NOx type and with solid particles, of the particulate filter type, said filtration structure being characterized in that it includes a catalytic system comprising at least one noble metal or transition metal suitable for reducing the NOx and a support material, in which said support material comprises or is made of a zirconium oxide partially substituted with a trivalent cation M3+ or with a divalent cation M?2+, said zirconium oxide being in a reduced, oxygen-sub-stoichiometric, state.Type: ApplicationFiled: December 16, 2009Publication date: October 13, 2011Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, SAINT-GOBAIN CENTRE DE RECH. ET D'ETUDES EUROPEENInventors: Philippe Vernoux, Abdelkader Hadjar, Agnes Princivalle, Christian Guizard
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Publication number: 20090186153Abstract: A process for the “in situ” manufacture, in a pressurized CO2 medium, of coated particles. The manufacturing process is characterized in that the steps of synthesising the particles and of coating these particles are coupled in such a way that the synthesised particles remain dispersed in a pressurized CO2 medium at least until the coating. The device comprises a reactor for synthesising particles in a pressurized CO2 medium; a means of injecting the coating material or precursor thereof into said reactor; a means of supplying said reactor with a pressurized CO2 medium; in which the means of injecting the coating material or precursor thereof is coupled to the synthesis reactor in such a way that the injection of the coating material or precursor thereof into said reactor does not destroy the dispersion of the particles, in a pressurized CO2 medium, in said reactor.Type: ApplicationFiled: May 14, 2007Publication date: July 23, 2009Applicants: Commissariat A L"energie Atomique, Centre National De La Recherche Scientifique, Universite Montpellier 2Inventors: Audrey Hertz, Bruno Fournel, Christian Guizard, Anne Julbe, Jean-Christophe Ruiz, Stephane Sarrade
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Patent number: 6387341Abstract: This invention relates to a method of manufacturing a product based on a simple or mixed metal oxide, or silicon oxide, from a charge of one or more precursors comprising one or more organic precursors. These oxides can be, for example, oxides of Ti, Al, Mg, Th, Si, Ba, Bc or Zr etc. The method comprises bringing the charge of organo-metallic precursors into contact with a reaction medium that comprises supercritical C02, at a temperature of from 31 to 100° C. and a supercritical pressure of from 3×107 to 5×107 Pa, in order to form from the precursor, a product based on a simple or mixed metal oxide, or silicon oxide, from the reaction medium by reducing the pressure of the supercritical C02 to a pressure lower than the supercritical pressure.Type: GrantFiled: March 13, 2000Date of Patent: May 14, 2002Assignee: Commissariat a l'Energie AtomiqueInventors: Stéphane Sarrade, Luc Schrive, Christian Guizard, Anne Julbe
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Patent number: 5425878Abstract: The invention relates to membranes for facilitated ion transport in aqueous solutions. The membrane is an adduct of a heteropolysiloxane and a crown-ether, and contains certain ions such as picrate or fluoroborate. This membrane is efficient for the selective transport of potassium ions.Type: GrantFiled: November 24, 1993Date of Patent: June 20, 1995Assignee: Eastman Kodak CompanyInventors: Christian Lurin, Christian Guizard, Danielle Wettling, Pascale Lacan
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Patent number: 5266207Abstract: Mechanically strong and thermally/chemically-resistant composite nanofiltration membranes, well adapted for the separation of low molecular weight compounds, comprise a porous inorganic support substrate, the pore diameters of which ranging from 3 to 10 nm, this inorganic support substrate having a polymer membrane which comprises an elastomeric polyphosphazene densely deposited on at least one of the face surfaces thereof, the structural porosity of such polyphosphazene membrane ranging from 0.2 to 2 nm.Type: GrantFiled: April 30, 1992Date of Patent: November 30, 1993Assignee: TechsepInventors: Anne Boye, Andre Grangeon, Christian Guizard
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Patent number: 4562021Abstract: The present invention relates to a method of manufacturing a medium for microfiltration, for ultrafiltration, or for reverse osmosis, wherein hydrolysis is performed on an alkoxide, an organo-metallic compound, or a metal salt of an organic or an inorganic acid, optionally dissolved in an anhydrous organic solvent, in order to obtain a sol of particles of the oxide or of the hydroxide of the corresponding chemical element, a thickening agent is added to the sol, and the resulting sol is slip cast onto a support layer having pores which are larger than pores desired for the filter medium, the thin layer deposited on the support medium is then dried, and then heat treated to eliminate the thickening agent and to sinter the particles of the deposited thin layer. The thickening agent is added to the sol in conjunction with a strong acid whose anion does not form a complex with ions of the oxide or hydroxide metal, and the slip casting is performed by mere putting into contact without filtering.Type: GrantFiled: September 5, 1984Date of Patent: December 31, 1985Assignee: Ceraver, S.A.Inventors: Jean-Andre Alary, Louis Cot, Francis Gugliermotte, Andre Larbot, Christian Guizard