Patents by Inventor Jérôme Roger

Jérôme Roger 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).

  • Patent number: 11833588
    Abstract: A die or piston of a spark plasma sintering apparatus, wherein the die or piston is made from graphite and the outer surfaces of the die or piston are coated with a silicon carbide layer with a thickness of 1 to 10 micrometres, the silicon carbide layer being further optionally coated with one or more other layer(s) made from a carbide other than silicon carbide chosen from hafnium carbide, tantalum carbide and titanium carbide, the other layer(s) each having a thickness of 1 to 10 micrometres. A spark plasma sintering (SPS) apparatus comprising the die and two of the pistons, defining a sintering, densification or assembly chamber capable of receiving a powder to be sintered, a part to be densified, or parts to be assembled. A method of sintering a powder, densifying a part, or assembling two parts by means of a method of spark plasma sintering (SPS) in an oxidising atmosphere, using the spark plasma sintering (SPS) apparatus.
    Type: Grant
    Filed: December 27, 2022
    Date of Patent: December 5, 2023
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Alexandre Allemand, Alain Largeteau, Seu U-Chan Chung, Yann Le Petitcorps, Jérôme Roger
  • Patent number: 11642724
    Abstract: A die or piston of a spark plasma sintering apparatus, wherein the die or piston is made from graphite and the outer surfaces of the die or piston are coated with a silicon carbide layer with a thickness of 1 to 10 micrometres, the silicon carbide layer being further optionally coated with one or more other layer(s) made from a carbide other than silicon carbide chosen from hafnium carbide, tantalum carbide and titanium carbide, the other layer(s) each having a thickness of 1 to 10 micrometres. A spark plasma sintering (SPS) apparatus comprising the die and two of the pistons, defining a sintering, densification or assembly chamber capable of receiving a powder to be sintered, a part to be densified, or parts to be assembled. A method of sintering a powder, densifying a part, or assembling two parts by means of a method of spark plasma sintering (SPS) in an oxidising atmosphere, using the spark plasma sintering (SPS) apparatus.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: May 9, 2023
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Alexandre Allemand, Alain Largeteau, Seu U-Chan Chung, Yann Le Petitcorps, Jérôme Roger
  • Publication number: 20230133590
    Abstract: A die or piston of a spark plasma sintering apparatus, wherein the die or piston is made from graphite and the outer surfaces of the die or piston are coated with a silicon carbide layer with a thickness of 1 to 10 micrometres, the silicon carbide layer being further optionally coated with one or more other layer(s) made from a carbide other than silicon carbide chosen from hafnium carbide, tantalum carbide and titanium carbide, the other layer(s) each having a thickness of 1 to 10 micrometres. A spark plasma sintering (SPS) apparatus comprising the die and two of the pistons, defining a sintering, densification or assembly chamber capable of receiving a powder to be sintered, a part to be densified, or parts to be assembled. A method of sintering a powder, densifying a part, or assembling two parts by means of a method of spark plasma sintering (SPS) in an oxidising atmosphere, using the spark plasma sintering (SPS) apparatus.
    Type: Application
    Filed: December 27, 2022
    Publication date: May 4, 2023
    Inventors: Alexandre Allemand, Alain Largeteau, Seu U-Chan Chung, Yann Le Petitcorps, Jérôme Roger
  • Publication number: 20220175961
    Abstract: A recombinant adeno-associated virus (AAV) vector that carries a nucleic acid sequence encoding the retinal transcription factor cone-rod homeobox (CRX) for its use in treating CRX-associated IRDs in a subject in need thereof or for use in treating inherited retinal dystrophies caused by hypomorphic mutations in the CRX target genes.
    Type: Application
    Filed: March 9, 2020
    Publication date: June 9, 2022
    Applicants: UNIVERSITE PARIS-SACLAY, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, RETINA FRANCE, VARIANT
    Inventors: Jérôme ROGER, Elodie Kim GRELLIER
  • Patent number: 10723658
    Abstract: A method of fabricating a ceramic material, the method including forming a ceramic material by performing a first chemical reaction at least between a first powder of an intermetallic compound and a reactive gas phase, a liquid phase being present around the grains of the first powder during the first chemical reaction, the liquid gas phase being obtained from a second powder of a metallic compound by melting the second powder or as a result of a second chemical reaction between at least one element of the first powder and at least one metallic element of the second powder, a working temperature being imposed during the formation of the ceramic material, which temperature is low enough to avoid melting the first powder.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: July 28, 2020
    Assignees: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, SAFRAN CERAMICS
    Inventors: Laurence Maille, Jérôme Roger, Yann Le Petitcorps, Bernard Reignier
  • Patent number: 10662117
    Abstract: A method of fabricating a part out of ceramic matrix composite material, the method including infiltrating a fiber preform with a molten composition including a majority by weight of silicon, the fiber preform including silicon carbide fibers, silicon carbide powder being present in the pores of said preform, a mean size of silicon carbide crystallites in the powder being less than the mean size of the silicon carbide crystallites in the fibers, a ceramic matrix being formed in the pores of the fiber preform during the infiltration so as to obtain the part made of composite material.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: May 26, 2020
    Assignees: SAFRAN CERAMICS, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Emilie Mendez, Jérôme Roger, Yann Lepetitcorps
  • Publication number: 20180370859
    Abstract: A method of fabricating a ceramic material, the method including forming a ceramic material by performing a first chemical reaction at least between a first powder of an intermetallic compound and a reactive gas phase, a liquid phase being present around the grains of the first powder during the first chemical reaction, the liquid gas phase being obtained from a second powder of a metallic compound by melting the second powder or as a result of a second chemical reaction between at least one element of the first powder and at least one metallic element of the second powder, a working temperature being imposed during the formation of the ceramic material, which temperature is low enough to avoid melting the first powder.
    Type: Application
    Filed: December 20, 2016
    Publication date: December 27, 2018
    Inventors: Laurence MAILLE, Jérôme ROGER, Yann LE PETITCORPS, Bernard REIGNIER
  • Publication number: 20180311729
    Abstract: A die or piston of a spark plasma sintering apparatus, wherein the die or piston is made from graphite and the outer surfaces of the die or piston are coated with a silicon carbide layer with a thickness of 1 to 10 micrometres, the silicon carbide layer being further optionally coated with one or more other layer(s) made from a carbide other than silicon carbide chosen from hafnium carbide, tantalum carbide and titanium carbide, the other layer(s) each having a thickness of 1 to 10 micrometres. A spark plasma sintering (SPS) apparatus comprising the die and two of the pistons, defining a sintering, densification or assembly chamber capable of receiving a powder to be sintered, a part to be densified, or parts to be assembled. A method of sintering a powder, densifying a part, or assembling two parts by means of a method of spark plasma sintering (SPS) in an oxidising atmosphere, using the spark plasma sintering (SPS) apparatus.
    Type: Application
    Filed: November 3, 2016
    Publication date: November 1, 2018
    Inventors: Alexandre Allemand, Alain Largeteau, Seu U-Chan Chung, Yann Le Petitcorps, Jérôme Roger