Patents by Inventor Marie GUIGNARD

Marie GUIGNARD 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).

  • POSITIVE ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD THEREOF, AND POSITIVE ELECTRODE
    Publication number: 20230312370
    Abstract: A positive electrode active material has O6-type structure having Lix [AzBw(Li1/6Ni1/6Mn4/6)1-z-w]O2, wherein 1?x>0; z<0.005; when present, A is at least one element chosen from the group consisting of: Mg, Ca, Sr, Sc, Y, La, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Zn and Al; w<0.05; and when present, B is at least one element chosen from the group consisting of: Mg, Ca, Sr, Sc, Y, La, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Zn, and Al.
    Type: Application
    Filed: March 30, 2023
    Publication date: October 5, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Laurent CASTRO, Valentin SAIBI, Marie GUIGNARD, Claude-Henri DELMAS
  • SODIUM LAYERED OXIDES AS CATHODE MATERIALS FOR SODIUM ION BATTERIES AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20220298024
    Abstract: A composition of general formula (1): Nax[MnaNibCrc]O2+y (1), wherein: 0.6?x?0.8; ?0.1?y?0.1; 0.55?a?0.7; 0.25?b?0.3; c?0.05; and a+b+c?1.0, an intermediate product for preparing a composition of general formula (1) and a process of synthesis, wherein the mixed sodium-transition metal oxide of general formula (1) may generally show an essentially or solely P2 structure, and may be used as a positive electrode material for a sodium ion secondary battery.
    Type: Application
    Filed: August 27, 2019
    Publication date: September 22, 2022
    Applicants: TOYOTA MOTOR EUROPE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Laurent CASTRO, Jun YOSHIDA, Claude DELMAS, Marie GUIGNARD, Elodie GUERIN
  • Sodium layered oxide as cathode material for sodium ion battery
    Patent number: 10601039
    Abstract: A mixed oxide of sodium and transition metals having the formula (1): Nax[MnaNibCoc]O2+y??(1) wherein: 0.5?x?0.9, ?0.1?y?0.1, a+b+c=1, 4a+2b+3c=4?x+2y, and 0<c?0.5. Further a process for producing such a mixed oxide, a positive electrode including such a mixed oxide and a sodium ion secondary battery including such a positive electrode.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: March 24, 2020
    Assignees: TOYOTA MOTOR EUROPE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Jun Yoshida, Claude Delmas, Marie Guignard, Dany Carlier-Larregaray
  • SODIUM LAYERED OXIDE AS CATHODE MATERIAL FOR SODIUM ION BATTERY
    Publication number: 20180205081
    Abstract: A mixed oxide of sodium and transition metals having the formula (1): Nax[MnaNibCoc]O2+y ??(1) wherein: 0.5?x?0.9, ?0.1?y?0.1, a+b+c=1, 4a+2b+3c=4?x+2y, and 0<c?0.5. Further a process for producing such a mixed oxide, a positive electrode including such a mixed oxide and a sodium ion secondary battery including such a positive electrode.
    Type: Application
    Filed: July 15, 2015
    Publication date: July 19, 2018
    Applicants: TOYOTA MOTOR EUROPE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Jun YOSHIDA, Claude DELMAS, Marie GUIGNARD, Dany CARLIER-LARREGARAY