Patents by Inventor Hicham Maskrot

Hicham Maskrot 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).

  • Publication number: 20210230722
    Abstract: A method for producing a powder of a reinforced alloy (ODS alloy) in which the grains forming the particles of the powder comprise a metal matrix, in the volume of which crystalline oxide particles are dispersed, said method comprising the following successive steps: i) providing a powder mixture to be milled comprising a master alloy intended to form the metal matrix and an additional powder comprising at least one intermediate intended to incorporate atoms intended to form the dispersed oxide particles; ii) milling the powder mixture according to a mechanical synthesis process for making a precursor powder; iii) subjecting the precursor powder to a thermal plasma generated by a plasma torch comprising a plasma gas, in order to obtain the reinforced alloy powder. The method of the invention is particularly suitable for producing an ODS alloy that has optimized characteristics of composition and/or microstructure.
    Type: Application
    Filed: May 3, 2019
    Publication date: July 29, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Elodie VASQUEZ, Pierre-François GIROUX, Fernando LOMELLO, Hicham MASKROT, Yann LECONTE, Frédéric SCHUSTER, Khalil ABDELKEBIR
  • Publication number: 20210140025
    Abstract: Part comprising a steel material whose constituent grains comprise a matrix in which precipitates are incorporated, the precipitates comprising at least one metallic element selected from a metallic element M, a metallic element M?, a metallic element M? or mixtures thereof; the microstructure of the steel being such that the grains are equiaxed and the average grain size being such that the average of their largest dimension “D max” and/or the average of their smallest dimension “D min” is comprised between 10 ?m and 50 ?m. The steel material has optimised, stable and isotropic mechanical properties, in particular so that the steel material can best withstand mechanical and/or thermal stresses.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 13, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Olivier HERCHER, Marine CHAUSSINIAC, Jérôme PRADEL, Aziz CHNIOUEL, Hicham MASKROT, Fernando LOMELLO, Pierre-François GIROUX, Pascal AUBRY
  • Publication number: 20210140022
    Abstract: Steel material whose constituent grains comprise a matrix in which precipitates are incorporated, the precipitates comprising at least one metallic element selected from a metallic element M, a metallic element M?, a metallic element M? or mixtures thereof; the microstructure of the steel being such that the grains are equiaxed and the average grain size being such that the average of their largest dimension “Dmax” and/or the average of their smallest dimension “Dmin” is comprised between 10 ?m and 50 ?m. The steel material has optimized, stable and isotropic mechanical properties, in particular so that the steel material can best withstand mechanical and/or thermal stresses.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 13, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Aziz Chniouel, Hicham Maskrot, Fernando Lomello, Pierre-François Giroux, Pascal Aubry
  • Publication number: 20210138544
    Abstract: Process for the treatment of a steel material, wherein the grains of which it is composed comprise a matrix into which precipitates are incorporated, the precipitates comprising at least one metallic element selected from a metallic element M, a metallic element M?, a metallic element M? or mixtures thereof; the microstructure of the steel being such that the grains are equiaxial and the average size of the grains being such that the average of their largest dimension “Dmax” and/or the average of their smallest dimension “Dmin” is in the range 10 ?m to 50 ?m. The steel material has optimised, stable and isotropic mechanical properties, in particular so that the steel material is more resistant to mechanical and/or thermal stresses.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 13, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Aziz CHNIOUEL, Hicham MASKROT, Fernando LOMELLO, Pierre-François GIROUX, Pascal AUBRY
  • Publication number: 20210138543
    Abstract: Process for the manufacture of a steel material, wherein the grains of which it is composed comprise a matrix into which precipitates are incorporated, the precipitates comprising at least one metallic element selected from a metallic element M, a metallic element M?, a metallic element M? or mixtures thereof; the microstructure of the steel being such that the grains are equiaxial and the average size of the grains being such that the average of their largest dimension “Dmax” and/or the average of their smallest dimension “Dmin” is in the range 10 ?m to 50 ?m. The steel material has optimised, stable and isotropic mechanical properties, in particular so that the steel material is more resistant to mechanical and/or thermal stresses.
    Type: Application
    Filed: November 6, 2020
    Publication date: May 13, 2021
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Hicham MASKROT, Aziz CHNIOUEL, Fernando LOMELLO, Pierre-François GIROUX, Pascal AUBRY
  • Publication number: 20210096090
    Abstract: A non-destructive method for characterizing and monitoring the homogeneity of metal parts which are being manufactured by sintering and comprise several distinct zones. Laser radiation is applied successively to each zone and each sintered zone is analyzed simultaneously in real time by lock-in laser-active radiometry.
    Type: Application
    Filed: December 18, 2018
    Publication date: April 1, 2021
    Inventors: Hicham Maskrot, Alexandre Semerok
  • Patent number: 9733189
    Abstract: 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: Grant
    Filed: October 27, 2011
    Date of Patent: August 15, 2017
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Hicham Maskrot, Jean-Baptiste Sirven, Pascale Dewalle, Benoit Guizard
  • Patent number: 9480964
    Abstract: 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: Grant
    Filed: September 20, 2011
    Date of Patent: November 1, 2016
    Assignee: Commissariat a L'Energie Atomique et aux Energies Alternatives
    Inventors: Hicham Maskrot, Benoît Guizard
  • Publication number: 20150344313
    Abstract: 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: Application
    Filed: December 20, 2013
    Publication date: December 3, 2015
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Hicham Maskrot, Benoît Guizard, Youssef Atman
  • Patent number: 9139478
    Abstract: 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: Grant
    Filed: April 29, 2010
    Date of Patent: September 22, 2015
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Hicham Maskrot, Benoit Guizard, Francois Tenegal
  • Patent number: 9132482
    Abstract: A method of forming micrometric or millimetric sized granules by the agglomeration of nanometric sized particles, comprising the addition of a set of nanometric sized particles into a container having an inside wall surface with a circular or approximately circular section and setting the set of particles in motion along said inside wall surface by rotating the container about a rotation axis passing through said container. The setting in motion of the particles is done in a dry state and the container is rotated continuously at constant speed for several consecutive hours.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: September 15, 2015
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Hicham Maskrot
  • Patent number: 8821976
    Abstract: A method for elaborating carbon nanotubes on a substrate is provided. The method may comprise a step for growing on the substrate the nanotubes by chemical vapor deposition by having a stream comprising a carbon source, a precursor source of an oxide compound and, optionally a catalyst source, pass over the substrate.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: September 2, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Cyrine Brahim, Hicham Maskrot
  • Patent number: 8690995
    Abstract: 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: Grant
    Filed: November 17, 2010
    Date of Patent: April 8, 2014
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventors: Hicham Maskrot, Benoit Guizard
  • Publication number: 20130330557
    Abstract: A method of forming micrometric or millimetric sized granules by the agglomeration of nanometric sized particles, comprising the addition of a set of nanometric sized particles into a container having an inside wall surface with a circular or approximately circular section and setting the set of particles in motion along said inside wall surface by rotating the container about a rotation axis passing through said container. The setting in motion of the particles is done in a dry state and the container is rotated continuously at constant speed for several consecutive hours.
    Type: Application
    Filed: December 9, 2011
    Publication date: December 12, 2013
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVE
    Inventor: Hicham Maskrot
  • Publication number: 20130280132
    Abstract: 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: Application
    Filed: October 27, 2011
    Publication date: October 24, 2013
    Applicant: Commissariat A L'Energie Atomique Et Aux Energies Alternatives
    Inventors: Hicham Maskrot, Jean-Baptiste Sirven, Pascale Dewalle, Benoit Guizard
  • Publication number: 20130248614
    Abstract: 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: Application
    Filed: September 20, 2011
    Publication date: September 26, 2013
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Hicham Maskrot, Benoît Guizard
  • Publication number: 20120237680
    Abstract: A method for elaborating carbon nanotubes on a substrate is provided. The method may comprise a step for growing on the substrate the nanotubes by chemical vapor deposition by having a stream comprising a carbon source, a precursor source of an oxide compound and, optionally a catalyst source, pass over the substrate.
    Type: Application
    Filed: November 10, 2010
    Publication date: September 20, 2012
    Applicant: commissariat a l'energie atomique et aux energies alternatives
    Inventors: Cyrine Brahim, Hicham Maskrot
  • Publication number: 20120222558
    Abstract: 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: Application
    Filed: November 17, 2010
    Publication date: September 6, 2012
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Hicham Maskrot, Benoit Guizard
  • Publication number: 20120152724
    Abstract: 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: Application
    Filed: April 29, 2010
    Publication date: June 21, 2012
    Applicant: COMMISSARIAT A' L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Hicham Maskrot, Benoît Guizard, François Tenegal
  • Publication number: 20100308286
    Abstract: The invention relates to the synthesis of a material including nanoparticles containing oxygen, titanium and nitrogen. According to the invention the method comprises the combustion by a temperature rise of at least 500° C. of a precursor containing at least titanium, oxygen and nitrogen. Advantageously, the combustion can be a laser pyrolysis and ammonia can be used both as a reagent supplying the nitrogen element for sensitising the pyrolysis reaction and as a fluid for carrying another reagent supplying the titanium element.
    Type: Application
    Filed: September 12, 2008
    Publication date: December 9, 2010
    Applicants: COMMISSARIAT A' L ENERGIE ATOMIQUE, UNIVERSITE FRANCOIS REBELAIS
    Inventors: Nathalie Herlin, Bruno Pignon, Hicham Maskrot