Patents by Inventor Michael Roffat

Michael Roffat 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).

  • Solid electrolyte for lithium battery, comprising at least one zone of lithium-containing glass ceramic material and method of production
    Patent number: 9356313
    Abstract: At least one zone made of lithium-containing glass-ceramic material, in a solid electrolyte for a lithium battery, is formed from a lithium-containing ceramic material, advantageously in the form of a layer such as a thin film. It is obtained by melting of at least a part of the lithium-containing ceramic material, followed by a recrystallization heat treatment. Melting is obtained by a laser beam irradiation operation, which enables fabrication of the solid electrolyte to be performed directly on a multilayer stack comprising certain active components of the lithium battery.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: May 31, 2016
    Assignee: COMMISSARIAT À L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Sami Oukassi, Samir Guerroudj, Michaël Roffat
  • All-solid-state lithium battery, and production method therefor
    Patent number: 9105903
    Abstract: The invention relates to an all-solid-state lithium battery and to a method for producing such a battery. The all-solid-state lithium battery includes first and second electrodes separated by a solid electrolyte. The second electrode is formed by a composite material including an electrochemically-active material made of a lithium-ion insertion material, and an amorphous lithium-based material which is an ionic conductor for the lithium ions and which is inert relative to the electrochemically active material.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: August 11, 2015
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Michael Roffat, Frederic Le Cras
  • SOLID ELECTROLYTE FOR LITHIUM BATTERY, COMPRISING AT LEAST ONE ZONE OF LITHIUM-CONTAINING GLASS CERAMIC MATERIAL AND METHOD OF PRODUCTION
    Publication number: 20140248541
    Abstract: At least one zone made of lithium-containing glass-ceramic material, in a solid electrolyte for a lithium battery, is formed from a lithium-containing ceramic material, advantageously in the form of a layer such as a thin film It is obtained by melting of at least a part of the lithium-containing ceramic material, followed by a recrystallization heat treatment. Melting is obtained by a laser beam irradiation operation, which enables fabrication of the solid electrolyte to be performed directly on a multilayer stack comprising certain active components of the lithium battery.
    Type: Application
    Filed: June 15, 2012
    Publication date: September 4, 2014
    Applicant: Commissariat A L'Energie Atomique Et Aux Energies Alternatives
    Inventors: Sami Oukassi, Samir Guerroudj, Michaël Roffat
  • ALL-SOLID-STATE LITHIUM BATTERY, AND PRODUCTION METHOD THEREFOR
    Publication number: 20130177811
    Abstract: The invention relates to an all-solid-state lithium battery and to a method for producing such a battery. The all-solid-state lithium battery includes first and second electrodes separated by a solid electrolyte. The second electrode is formed by a composite material including an electrochemically-active material made of a lithium-ion insertion material, and an amorphous lithium-based material which is an ionic conductor for the lithium ions and which is inert relative to the electrochemically active material.
    Type: Application
    Filed: September 1, 2011
    Publication date: July 11, 2013
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Michael Roffat, Frederic Le Cras