Patents by Inventor Méryl Brothier

Méryl Brothier 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: 20240190669
    Abstract: A method for transporting non-flowable powders includes the following steps: mixing and suspending powders and carbon dioxide in the solid form, with the introduction of a cryogenic fluid, to obtain a cryogenic suspension; setting the cryogenic suspension in motion to enable transport thereof, controlling the motion of the cryogenic suspension according to one or more parameter(s) related to the first mixing and suspending step.
    Type: Application
    Filed: March 30, 2022
    Publication date: June 13, 2024
    Inventors: Meryl BROTHIER, Stéphane VAUDEZ, Anne-Charlotte ROBISSON, King-Wo LI
  • Publication number: 20240042453
    Abstract: A method for the cryogenic grinding of at least one powder comprising the following steps: (a) introducing a cryogenic fluid into an attrition mill comprising attrition means, (b) introducing the powder or powders into the attrition mill, and (c) setting the attrition mill in rotational motion, and wherein—the ratio VMA/(VMA+VFC) of the volume of the attrition means VMA to the sum of the volume of the attrition means VMA and the volume of the cryogenic fluid VFC is comprised between 0.2 and 0.8, and the rotational speed of the attrition mill during step (c) is between 100 rpm and 20,000 rpm. Further, particles of metal or metal alloy, to the use thereof, to a coating method employing them and to the use of such a coated material.
    Type: Application
    Filed: December 8, 2021
    Publication date: February 8, 2024
    Inventors: Meryl Brothier, Stéphane Vaudez
  • Patent number: 11260397
    Abstract: A device for granulating powders by cryogenic atomisation, characterised in that it comprises: a device for mixing powders by cryogenic fluid, comprising at least one chamber for mixing powders, comprising a cryogenic fluid; and a device for atomising a suspension of powders mixed by the device for mixing powders in order to allow a granulation of the powders, comprising a way of fractionating the suspension of powders making it possible to adjust the size of the droplets of powders to be atomised, and a method for adjusting the moisture of the mixed powders and/or the moisture of the atomisation atmosphere.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: March 1, 2022
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Méryl Brothier, Stéphane Vaudez
  • Patent number: 10981126
    Abstract: A device for mixing powders by cryogenic fluid, characterised in that it comprises at least: a chamber for mixing powders, comprising a cryogenic fluid; a chamber for supplying powders in order to allow the powders to be introduced into the mixing chamber; means for agitation in the mixing chamber so as to allow the mixing of the powders placed in suspension in the cryogenic fluid.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: April 20, 2021
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Méryl Brothier, Stéphane Vaudez
  • Patent number: 10688459
    Abstract: A device for mixing powders by a cryogenic fluid, characterised in that it comprises: a chamber for mixing the powders, comprising a cryogenic fluid, provided with means for forming a fluidised powder bed; a chamber for supplying powders in order to allow the powders to be introduced into the mixing chamber; a chamber for supplying cryogenic fluid in order to allow the cryogenic fluid to be introduced into the mixing chamber; a system for generating vibrations in the fluidised powder bed; and a system for controlling the system for generating vibrations.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: June 23, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Méryl Brothier, Stéphane Vaudez
  • Patent number: 10600521
    Abstract: A device for transferring a given powder or a mixture of given powders contained in a container including a side wall and at least one discharge opening, the container with axisymmetric shape having an axis of rotation being arranged in the transfer device such that the discharge opening thereof is located in a lower portion of the container, the transfer device including rotating the container about the axis thereof, on which the discharge opening is located and control for controlling the rotation such that the to rotation imposes on at least one portion of the side wall of the container, referred to as movable portion, a first moving phase wherein an acceleration no lower than a minimum acceleration is capable of causing the powder to slide relative to the movable portion.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: March 24, 2020
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Arnaud Benedetti, Philippe Sornay, Meryl Brothier
  • Publication number: 20180318779
    Abstract: A device for mixing powders by a cryogenic fluid, characterised in that it comprises: a chamber for mixing the powders, comprising a cryogenic fluid, provided with means for forming a fluidised powder bed; a chamber for supplying powders in order to allow the powders to be introduced into the mixing chamber; a chamber for supplying cryogenic fluid in order to allow the cryogenic fluid to be introduced into the mixing chamber; a system for generating vibrations in the fluidised powder bed; and a system for controlling the system for generating vibrations.
    Type: Application
    Filed: November 3, 2016
    Publication date: November 8, 2018
    Inventors: Méryl Brothier, Stéphane Vaudez
  • Publication number: 20180318778
    Abstract: A device for mixing powders by cryogenic fluid, characterised in that it comprises at least: a chamber for mixing powders, comprising a cryogenic fluid; a chamber for supplying powders in order to allow the powders to be introduced into the mixing chamber; means for agitation in the mixing chamber so as to allow the mixing of the powders placed in suspension in the cryogenic fluid.
    Type: Application
    Filed: November 3, 2016
    Publication date: November 8, 2018
    Inventors: Méryl Brothier, Stéphane Vaudez
  • Publication number: 20180304217
    Abstract: A device for granulating powders by cryogenic atomisation, characterised in that it comprises: a device for mixing powders by cryogenic fluid, comprising at least one chamber for mixing powders, comprising a cryogenic fluid; and a device for atomising a suspension of powders mixed by the device for mixing powders in order to allow a granulation of the powders, comprising a way of fractionating the suspension of powders making it possible to adjust the size of the droplets of powders to be atomised, and a method for adjusting the moisture of the mixed powders and/or the moisture of the atomisation atmosphere.
    Type: Application
    Filed: November 3, 2016
    Publication date: October 25, 2018
    Inventors: Méryl BROTHIER, Stéphane VAUDEZ
  • Patent number: 10068674
    Abstract: The invention relates to a jet spouted bed reactor, comprising a cylindrical area, a gas injection pipe at the base of the cylindrical area, and a transition area, connecting the upper end of the pipe to the base of the cylindrical area, this transition area having a convex profile in a plane extending through the axis (YY?) of flow of a fluid in the pipe.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: September 4, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Meryl Brothier, Dominique Moulinier, Philippe Rodriguez, Carine Ablitzer
  • Patent number: 9943874
    Abstract: A process for generating droplets with a modulatable droplet size distribution, comprises: making a stream of liquid strike a support with a given relative impact velocity; making said support vibrate at at least one vibration frequency; heating said support to a impact temperature such that the liquid film formed by the impact and made to vibrate is heated to a principal temperature to form in combination what are called principal droplets from said film; and transporting said droplets via a transfer/braking/sorting system to a liquid for precipitating the principal droplets, said transportation being carried out at a transportation temperature, all of these parameters, namely the relative impact velocity, the vibration frequency, the principal temperature and the transportation temperature allowing the droplet size of said formed principal droplets and the velocity of the latter to be modulated. A device allowing the process to be implemented is also provided.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: April 17, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Méryl Brothier, Dominique Moulinier
  • Publication number: 20170358376
    Abstract: A device for transferring a given powder or a mixture of given powders contained in a container including a side wall and at least one discharge opening, the container with axisymmetric shape having an axis of rotation being arranged in the transfer device such that the discharge opening thereof is located in a lower portion of the container, the transfer device including rotating the container about the axis thereof, on which the discharge opening is located and control for controlling the rotation such that the rotation impose on at least one portion of the side wall of the container, referred to as movable portion, a first moving phase wherein an acceleration no lower than a minimum acceleration is capable of causing the powder to slide relative to the movable portion.
    Type: Application
    Filed: November 24, 2015
    Publication date: December 14, 2017
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Arnaud BENEDETTI, Philippe SORNAY, Meryl BROTHIER
  • Patent number: 9837175
    Abstract: A process for chemical stabilization of a uranium carbide composite material: UCx+yC with x?1 and y>0, placed in a stabilization chamber, comprises: a rise in chamber internal temperature for oxidation of the compound based on uranium carbide between approximately 380° C. and 550° C., the chamber being fed with a neutral gas; isothermal oxidative treatment at the oxidation temperature, the chamber being placed under O2 partial pressure; controlling completion of stabilization of the compound, comprising monitoring the amount of molecular oxygen consumed and/or carbon dioxide or carbon dioxide and carbon monoxide given off, until achievement of an input set-point value for the amount of molecular oxygen, of a minimum threshold value for the amount of carbon dioxide or minimum threshold values for the carbon dioxide and carbon monoxide. A device implements the process.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: December 5, 2017
    Assignee: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventors: Mickael Marchand, Olivier Fiquet, Méryl Brothier
  • Publication number: 20170225956
    Abstract: The present invention relates to a method for preparation of a powder comprising at least one carbide of at least one metal, comprising the steps consisting of: (a) preparing a solution comprising at least one organic gelling agent and at least one inorganic salt of at least one metal in a solvent; (b) modifying the pH of the solution prepared in step (a) in such a way as to precipitate said at least one metal and to obtain a colloidal suspension comprising nanoparticles of oxyhydroxides of said at least one metal; (c) removing the solvent from the colloidal suspension obtained in step (b) by which means a precursor of at least one carbide of at least one metal is obtained; and (d) subjecting the precursor obtained in step (c) to a thermal treatment in order to transform same into a powder comprising at least one carbide of at least one metal. The present invention also relates to the powder thus prepared and the various uses thereof.
    Type: Application
    Filed: August 6, 2015
    Publication date: August 10, 2017
    Inventors: Alvaro Saravia, Xavier Deschanels, Stéphanie Szenknect, Meryl Brothier, Olivier Fiquet
  • Patent number: 9574257
    Abstract: The invention relates to a powder of an alloy based on uranium and molybdenum in a metastable ? phase, which is formed of particles which have an elongation index at least equal to 1.1, a non-zero closed porosity value and which are composed of grains having a molybdenum content, for which the variations within the same grain are of at most 1% by mass. It also relates to a method allowing preparation of this alloy powder as well as to the use of said powder for manufacturing nuclear fuels and targets for producing radioisotopes. Applications: Manufacturing of nuclear fuels, notably for experiment nuclear reactors; manufacturing of targets for producing radioisotopes, notably for the medical industry.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: February 21, 2017
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, UNIVERSITE DE RENNES 1
    Inventors: Jerome Allenou, Francois Charollais, Meryl Brothier, Xaviere Iltis, Olivier Tougait, Mathieu Pasturel, Henri Noel
  • Patent number: 9394422
    Abstract: A composition filled with actinide powder, comprising an organic matrix and an actinide powder or a mixture of actinide powders, comprises at least: a plasticizer comprising an alkane whose longest radical chain comprises at least a few tens of carbon atoms and is in a volume content of between 20% and 70% of the total volume of the organic compounds alone; a binder comprising at least one polyolefinic polymer and which is in a volume content of between 20% and 50% of the total volume of the organic compounds alone; a dispersant comprising a carboxylic acid or salts thereof, the volume content of which is less than 10% of the total volume of the organic compounds alone; said actinide powder or said mixture of actinide powders represent between 40% and 65% of the volume of the filled matrix.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: July 19, 2016
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Julien Bricout, Meryl Brothier, Pierre Matheron, Carine Ablitzer, Jean-Claude Gelin
  • Patent number: 9190180
    Abstract: A method for preparing a powder of an alloy based on uranium and molybdenum in a metastable ? phase is provided, which comprises: a) putting at least one first reagent selected from uranium oxides and mixtures thereof, uranium fluorides and mixtures thereof, into contact with a second reagent consisting in molybdenum and a third reagent consisting in a reducing metal, the first, second and third reagents being in a divided form; b) reacting the reagents at a temperature?the melting temperature of the third reagent and under an inert atmosphere, whereby this reaction leads to the formation of the alloy comprising uranium and molybdenum in the form of a powder, for which the particles are covered with a reducing metal oxide or fluoride layer; c) cooling the so formed powder at a rate at least equal to 450° C./hour; and d) removing the reducing metal oxide or fluoride layer which covers the particles of the powder of the alloy comprising uranium and molybdenum.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: November 17, 2015
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, UNIVERSITE DE RENNES I
    Inventors: Jerome Allenou, Meryl Brothier, Francois Charollais, Xaviere Iltis, Olivier Tougait, Mathieu Pasturel, Henri Noel
  • Publication number: 20150302942
    Abstract: A supplemented nuclear fuel comprises a nuclear fuel of oxide type which generates fission products such as tellurium, cesium and iodine, which generate via chemical interaction species that are potentially corrosive, supplemented with at least one redox system comprising a first and second species comprising a common element having a different degree of oxidation in each of the two species, the system having an oxygen potential curve as a function of the temperature that is within an interval delimited by: an upper limit: the curve of coexistence of the chemical species I2Te (g) and CsI (g) at the same partial pressure imposed by the equilibrium between CsI (l) and CsI (g), approximated between 1000° C. and 2000° C. by a straight line segment whose ends PO2/11 and PO2/12 have the coordinates: PO2/11 (T=1000° C.)??370 kJ/molO2 and PO2/12 (T=2000° C.)??230 kJ/molO2; and a lower limit: the curve of oxygen potential of the system (Cs2MoO4/Cs+Mo) approximated between 1000° C. and 2000° C.
    Type: Application
    Filed: November 8, 2013
    Publication date: October 22, 2015
    Inventors: Chantal Riglet-Martial, Méryl Brothier, Pierre Matheron, Vanessa Pennisi, Virginie Basini
  • Publication number: 20150097147
    Abstract: A composition filled with actinide powder, comprising an organic matrix and an actinide powder or a mixture of actinide powders, comprises at least: a plasticizer comprising an alkane whose longest radical chain comprises at least a few tens of carbon atoms and is in a volume content of between 20% and 70% of the total volume of the organic compounds alone; a binder comprising at least one aromatic polymer and/or polymethyl methacrylate and which is in a volume content of between 20% and 50% of the total volume of the organic compounds alone; a dispersant comprising a carboxylic acid or salts thereof, the volume content of which is less than 10% of the total volume of the organic compounds alone; said actinide powder or said mixture of actinide powders represent between 40% and 65% of the volume of the filled matrix.
    Type: Application
    Filed: May 7, 2013
    Publication date: April 9, 2015
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Julien Bricout, Meryl Brothier, Pierre Matheron, Carine Ablitzer, Jean-Claude Gelin
  • Publication number: 20140319237
    Abstract: A process for generating droplets with a modulatable droplet size distribution, comprises: making a stream of liquid strike a support with a given relative impact velocity; making said support vibrate at at least one vibration frequency; heating said support to a impact temperature such that the liquid film formed by the impact and made to vibrate is heated to a principal temperature to form in combination what are called principal droplets from said film; and transporting said droplets via a transfer/braking/sorting system to a liquid for precipitating the principal droplets, said transportation being carried out at a transportation temperature, all of these parameters, namely the relative impact velocity, the vibration frequency, the principal temperature and the transportation temperature allowing the droplet size of said formed principal droplets and the velocity of the latter to be modulated. A device allowing the process to be implemented is also provided.
    Type: Application
    Filed: November 29, 2011
    Publication date: October 30, 2014
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES AL TERNATIVES
    Inventors: Méryl Brothier, Dominique Moulinier