Patents by Inventor Matthieu Cueff

Matthieu Cueff 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).

  • Electrical component comprising a material with a perovskite structure and optimized electrodes and fabrication process
    Patent number: 8692443
    Abstract: An electrical component comprises a lead-based perovskite crystal material layer between a lower electrode on the surface of a substrate and an upper electrode, characterized in that the lower electrode comprises a stabilizing first layer made of a first material and a seeding second layer made of a second material, the first and second materials having the same chemical composition but different structural parameters and/or densities. A process for fabricating a component is also provided, in which the material with a perovskite structure may be PZT with a (100) or (111) orientation.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 8, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Matthieu Cueff, Emmanuel Defay, Gwenael Le Rhun
  • Electrical Component Comprising a Material with a Perovskite Structure and Optimized Electrodes and Fabrication Process
    Publication number: 20120306322
    Abstract: An electrical component comprises a lead-based perovskite crystal material layer between a lower electrode on the surface of a substrate and an upper electrode, characterized in that the lower electrode comprises a stabilizing first layer made of a first material and a seeding second layer made of a second material, the first and second materials having the same chemical composition but different structural parameters and/or densities. A process for fabricating a component is also provided, in which the material with a perovskite structure may be PZT with a (100) or (111) orientation.
    Type: Application
    Filed: May 25, 2012
    Publication date: December 6, 2012
    Applicant: Commissariat a L'Energie Atomique et aux Energines Alternatives
    Inventors: Matthieu CUEFF, Emmanuel DEFAY, Gwenaël LE RHUN
  • Piezoelectric actuation structure including an integrated piezoresistive strain gauge and its production method
    Patent number: 8004154
    Abstract: The invention relates to a piezoelectric actuation structure including at least one strain gauge and at least one actuator produced from a stack on the surface of a substrate of at least one layer of piezoelectric material arranged between a bottom electrode layer and a top electrode layer, at least a portion of the stack forming the actuator being arranged above a cavity produced in the substrate, characterized in that the strain gauge is a piezoresistive gauge located in the top electrode layer and/or the bottom electrode layer, the layer or layers including electrode discontinuities making it possible to produce said piezoresistive gauge. The invention also relates to a method for producing such a structure.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: August 23, 2011
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventors: Matthieu Cueff, Emmanuel Defay, François Perruchot, Patrice Rey
  • PIEZOELECTRIC ACTUATION STRUCTURE INCLUDING AN INTEGRATED PIEZORESISTIVE STRAIN GAUGE AND ITS PRODUCTION METHOD
    Publication number: 20110080069
    Abstract: The invention relates to a piezoelectric actuation structure including at least one strain gauge and at least one actuator produced from a stack on the surface of a substrate of at least one layer of piezoelectric material arranged between a bottom electrode layer and a top electrode layer, at least a portion of the stack forming the actuator being arranged above a cavity produced in the substrate, characterized in that the strain gauge is a piezoresistive gauge located in the top electrode layer and/or the bottom electrode layer, the layer or layers including electrode discontinuities making it possible to produce said piezoresistive gauge. The invention also relates to a method for producing such a structure.
    Type: Application
    Filed: October 5, 2010
    Publication date: April 7, 2011
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Matthieu CUEFF, Emmanuel DEFAY, François PERRUCHOT, Patrice REY