Patents by Inventor Sophie Guillemet

Sophie Guillemet 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).

  • Ceramics based on lanthanum-doped barium titanate, method of preparation and uses
    Patent number: 7939007
    Abstract: The present invention relates to a method of preparing ceramics based on lanthanum-doped barium titanate, which comprises the following steps: (a) flash sintering of lanthanum-doped barium titanate powders; and (b) heat treatment of the material thus obtained, in an air atmosphere or in an oxidising atmosphere. The invention also relates to ceramics based on lanthanum-doped barium titanate, possessing a very high real part of the relative dielectric permittivity, and to their use for obtaining capacitors of high capacitance and high capacitance per unit volume for high-voltage withstand capability.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: May 10, 2011
    Assignees: Centre National de la Recherche Scientifique (CNRS), Universite Paul Sabatier Toulouse III
    Inventors: Sophie Guillemet, Madona Boulos, Bernard Durand, Thierry Lebey, Quang Nguyen
  • Ceramics Based on Lanthanum-Doped Barium Titanate, Method of Preparation and Uses
    Publication number: 20100027191
    Abstract: The present invention relates to a method of preparing ceramics based on lanthanum-doped barium titanate, which comprises the following steps: (a) flash sintering of lanthanum-doped barium titanate powders; and (b) heat treatment of the material thus obtained, in an air atmosphere or in an oxidising atmosphere. The invention also relates to ceramics based on lanthanum-doped barium titanate, possessing a very high real part of the relative dielectric permittivity, and to their use for obtaining capacitors of high capacitance and high capacitance per unit volume for high-voltage withstand capability.
    Type: Application
    Filed: April 18, 2007
    Publication date: February 4, 2010
    Inventors: Sophie Guillemet, Madona Boulos, Bernard Durand, Thierry Lebey, Quang Nguyen