Patents by Inventor Benoît Guizard
Benoît 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: 9733189Abstract: The invention relates to a smoke analysis characterization cell employing optical spectroscopy, which comprises: a reaction chamber, an inlet orifice for injecting smoke into the reaction chamber; an outlet orifice for discharging the smoke from the reaction chamber; and an analysis window for the entry of a laser beam intended to form the plasma inside the reaction chamber, which cell is characterized in that the system further includes a blower for blowing an inert gas close to the analysis window; and a shielding gas injector for the shielded injection of the smoke into the reaction chamber, the shielding being provided by a jet of inert gas around the smoke.Type: GrantFiled: October 27, 2011Date of Patent: August 15, 2017Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Hicham Maskrot, Jean-Baptiste Sirven, Pascale Dewalle, Benoit Guizard
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Patent number: 9480964Abstract: A device and a method for producing suspensions or wet pastes of nanoparticles or ultra-fine particles. The method comprises: introducing a flow of particles of nanometric or submicronic size into a first compartment of a chamber having a bulk density between 15 and 100 g/L; forming, in the first compartment, a spray of droplets between 1 and 10 micrometers in size, by injecting a solvent in liquid or gas form into a second compartment of the device and passing said solvent through the filtering means, the solvent being chosen from the solvents which are liquid at ambient temperature and at atmospheric pressure; stopping the formation of the spray when the entire quantity of particles contained in the first compartment forms, as required, with the solvent, a suspension comprising between 80 and 99.Type: GrantFiled: September 20, 2011Date of Patent: November 1, 2016Assignee: Commissariat a L'Energie Atomique et aux Energies AlternativesInventors: Hicham Maskrot, Benoît Guizard
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Publication number: 20150344313Abstract: The invention concerns a method for controlling the production of nanopowder of a given diameter from at least acetylene contained in a pressurised cylinder, comprising defining the colour of the nanopowder and adjusting the rate of discharge from the pressurised cylinder of acetylene on the basis of the colour of the nanopowder. It also concerns a method for producing nanopowder of a given diameter and a given colour from at least acetylene contained in a pressurised cylinder; production being controlled using the abovementioned method.Type: ApplicationFiled: December 20, 2013Publication date: December 3, 2015Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Hicham Maskrot, Benoît Guizard, Youssef Atman
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Patent number: 9139478Abstract: A method is followed to prepare a powder that includes carbon, silicon and boron, the silicon being in silicon carbide form and the boron being in boron carbide and/or free boron form. The method includes contacting a carbon-based precursor, a silicon-based precursor and a boron-based precursor BX3, X being a halogen atom, to obtain a mixture of these three precursors. The resulting mixture is subjected to laser pyrolysis. The boron-based precursor BX3 is heated, prior to the contacting step and/or simultaneously with the contacting step, to a temperature higher than the condensation temperature of the precursor.Type: GrantFiled: April 29, 2010Date of Patent: September 22, 2015Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Hicham Maskrot, Benoit Guizard, Francois Tenegal
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Patent number: 9005511Abstract: The invention relates to a system for continuous flow production of nanometric or sub-micrometric powders under the action of laser pyrolysis by interaction between a beam emitted by a laser and a flow of reagents emitted by at least one injector, wherein the laser is followed by an optical device allowing the energy of the beam to be distributed along an axis perpendicular to the axis of the flow of reagents, in an elongated cross-section with adjustable dimensions at least at one interaction area between this beam and the flow of reagents emitted by at least two injectors located perpendicularly to the axis of the beam. It also concerns a method for producing such powders.Type: GrantFiled: December 4, 2006Date of Patent: April 14, 2015Assignee: Commissariate a l'Energie AtomiqueInventors: François Tenegal, Benoit Guizard
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Patent number: 8822878Abstract: A system and process for production of nanometric or sub-micrometric powders in continuous flux under the action of laser pyrolysis in at least one interaction zone between a beam emitted by a laser and a flux of reagents emitted by an injector, in which the laser is followed by optical means for distributing the energy of the beam emitted by the latter according to an axis perpendicular to the axis of each flux of reagents, in an elongated cross-section having adjustable dimensions at the level of this at least one interaction zone.Type: GrantFiled: November 7, 2005Date of Patent: September 2, 2014Assignee: Commissariat a l'Energie AtomiqueInventors: Francois Tenegal, Benoit Guizard, Nathalie Herlin-Boime, Dominique Porterat
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Patent number: 8690995Abstract: A device for recovering nanometer or sub-micron particles carried by a gas by generating a stabilized suspension, including: a vessel including a mechanism injecting a liquid; a gas discharge mechanism in an upper portion thereof, located near a particle filter; a particle suspension outlet; and a liquid ring pump, transferring and dispersing particles carried by a gas into a liquid. The pump introduces a gas laden with nanometer or sub-micron particles into the pump; injects at least one liquid into the pump; and discharges the mixture obtained following the transfer. The vessel also includes a mechanism introducing the mixture into the vessel and at least one piezoelectric pellet, immersed in the vessel, configured to generate a fog of micron-sized droplets.Type: GrantFiled: November 17, 2010Date of Patent: April 8, 2014Assignee: Commissariat à l'énergie atomique et aux énergies alternativesInventors: Hicham Maskrot, Benoit Guizard
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Publication number: 20130280132Abstract: The invention relates to a smoke analysis characterization cell employing optical spectroscopy, which comprises: a reaction chamber, an inlet orifice for injecting smoke into the reaction chamber; an outlet orifice for discharging the smoke from the reaction chamber; and an analysis window for the entry of a laser beam intended to form the plasma inside the reaction chamber, which cell is characterized in that the system further includes a blower for blowing an inert gas close to the analysis window; and a shielding gas injector for the shielded injection of the smoke into the reaction chamber, the shielding being provided by a jet of inert gas around the smoke.Type: ApplicationFiled: October 27, 2011Publication date: October 24, 2013Applicant: Commissariat A L'Energie Atomique Et Aux Energies AlternativesInventors: Hicham Maskrot, Jean-Baptiste Sirven, Pascale Dewalle, Benoit Guizard
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Publication number: 20130248614Abstract: A device and a method for producing suspensions or wet pastes of nanoparticles or ultra-fine particles. The method comprises: introducing a flow of particles of nanometric or submicronic size into a first compartment of a chamber having a bulk density between 15 and 100 g/L; forming, in the first compartment, a spray of droplets between 1 and 10 micrometres in size, by injecting a solvent in liquid or gas form into a second compartment of the device and passing said solvent through the filtering means, the solvent being chosen from the solvents which are liquid at ambient temperature and at atmospheric pressure; stopping the formation of the spray when the entire quantity of particles contained in the first compartment forms, as required, with the solvent, a suspension comprising between 80 and 99.Type: ApplicationFiled: September 20, 2011Publication date: September 26, 2013Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Hicham Maskrot, Benoît Guizard
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Publication number: 20120222558Abstract: A device for recovering nanometer or sub-micron particles carried by a gas by generating a stabilized suspension, including: a vessel including a mechanism injecting a liquid; a gas discharge mechanism in an upper portion thereof, located near a particle filter; a particle suspension outlet; and a liquid ring pump, transferring and dispersing particles carried by a gas into a liquid. The pump introduces a gas laden with nanometer or sub-micron particles into the pump; injects at least one liquid into the pump; and discharges the mixture obtained following the transfer. The vessel also includes a mechanism introducing the mixture into the vessel and at least one piezoelectric pellet, immersed in the vessel, configured to generate a fog of micron-sized droplets.Type: ApplicationFiled: November 17, 2010Publication date: September 6, 2012Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Hicham Maskrot, Benoit Guizard
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Patent number: 8241392Abstract: The invention relates to a gas phase method for producing nanometric particles in a reactor for producing particles in a gas phase, in which there is an interaction between a reaction flow and an energy flow. This method comprises the following steps: a step for coupling a device for producing gaseous chlorides with this reactor, a step for producing gaseous chlorides from a base precursor in the form of powders, and a step for injecting such a reaction flow into the reactor.Type: GrantFiled: May 29, 2007Date of Patent: August 14, 2012Assignee: Commissariat a l'Energie AtomiqueInventors: Benoit Guizard, Francois Tenegal
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Publication number: 20120152724Abstract: A method is followed to prepare a powder that includes carbon, silicon and boron, the silicon being in silicon carbide form and the boron being in boron carbide and/or free boron form. The method includes contacting a carbon-based precursor, a silicon-based precursor and a boron-based precursor BX3, X being a halogen atom, to obtain a mixture of these three precursors. The resulting mixture is subjected to laser pyrolysis. The boron-based precursor BX3 is heated, prior to the contacting step and/or simultaneously with the contacting step, to a temperature higher than the condensation temperature of the precursor.Type: ApplicationFiled: April 29, 2010Publication date: June 21, 2012Applicant: COMMISSARIAT A' L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVESInventors: Hicham Maskrot, Benoît Guizard, François Tenegal
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Publication number: 20090294274Abstract: The invention relates to a gas phase method for producing nanometric particles (10) in a reactor (11) for producing particles in a gas phase, in which there is an interaction between a reaction flow (14) and an energy flow (15). This method comprises the following steps: a step for coupling a device for producing gaseous chlorides (12) with this reactor (11), a step for producing gaseous chlorides from a base precursor in the form of powders (20), and a step for injecting such a reaction flow (14) into the reactor (11).Type: ApplicationFiled: May 29, 2007Publication date: December 3, 2009Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Benoît Guizard, Francois Tenegal
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Publication number: 20090014921Abstract: The invention relates to a system for continuous flow production of nanometric or sub-micrometric powders under the action of laser pyrolysis by interaction between a beam emitted by a laser and a flow of reagents emitted by at least one injector, wherein the laser is followed by an optical device allowing the energy of the beam to be distributed along an axis perpendicular to the axis of the flow of reagents, in an elongated cross-section with adjustable dimensions at least at one interaction area between this beam and the flow of reagents emitted by at least two injectors located perpendicularly to the axis of the beam. It also concerns a method for producing such powders.Type: ApplicationFiled: December 4, 2006Publication date: January 15, 2009Inventors: Francois Tenegal, Benoit Guizard
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Publication number: 20080305257Abstract: The invention relates a method for the production of stabilised suspensions of nanometric or submicrometric particles, which is a method contained in a continuous flow that includes a step (20) for the placing in suspension, dispersion and/or functionalisation of these particles produced in a gaseous stream containing the particles at the output of a reactor in a stream of at least one liquid. The invention also relates a device that implements this method.Type: ApplicationFiled: December 13, 2005Publication date: December 11, 2008Applicant: COMMISSARIAT A LENERGIE ATOMIQUEInventors: Francois Tenegal, Benoit Guizard
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Publication number: 20070295702Abstract: The invention relates to a system for production of nanometric or sub-micrometric powders in continuous flux under the action of laser pyrolysis in at least one interaction zone between a beam (11) emitted by a laser (10) and a flux of reagents (13) emitted by an injector (14), in which the laser is followed by optical means (12) for distributing the energy of the beam emitted by the latter according to an axis perpendicular to the axis of each flux of reagents, in an elongated cross-section having adjustable dimensions at the level of this at least one interaction zone. It also relates to a process for production of such powders.Type: ApplicationFiled: November 7, 2005Publication date: December 27, 2007Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUEInventors: Francois Tenegal, Benoit Guizard, Nathalie Herlin-Boime, Dominique Porterat