Patents by Inventor Xavier Biquard

Xavier Biquard 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).

  • Super-resolution optical recording medium
    Patent number: 8092887
    Abstract: The invention relates to the field of optical information recording. According to the invention, an optical storage structure is proposed comprising a substrate equipped with physical marks whose geometrical configuration defines the recorded information, a superposition of three layers on top of the substrate marks, and a transparent protective layer on top of this superposition, the superposition comprising a layer of indium or gallium antimonide inserted between two ZnS/SiO2 dielectric layers. The antimonide layer has a polycrystalline structure with an average crystal grain size between 5 and 50 nanometers. The non-linear behavior of the superposition of three layers under the read laser makes it possible to read information having a size below the theoretical resolution of the reading system.
    Type: Grant
    Filed: April 3, 2008
    Date of Patent: January 10, 2012
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Bérangère Hyot, Bernard Andre, Pierre Desre, Xavier Biquard
  • SUPER-RESOLUTION OPTICAL RECORDING MEDIUM
    Publication number: 20080273447
    Abstract: The invention relates to the field of optical information recording. According to the invention, an optical storage structure is proposed comprising a substrate equipped with physical marks whose geometrical configuration defines the recorded information, a superposition of three layers on top of the substrate marks, and a transparent protective layer on top of this superposition, the superposition comprising a layer of indium or gallium antimonide inserted between two ZnS/SiO2 dielectric layers. The antimonide layer has a polycrystalline structure with an average crystal grain size between 5 and 50 nanometers. The non-linear behavior of the superposition of three layers under the read laser makes it possible to read information having a size below the theoretical resolution of the reading system.
    Type: Application
    Filed: April 3, 2008
    Publication date: November 6, 2008
    Applicant: Commissariat A L'Energie Atomique
    Inventors: Berangere Hyot, Bernard Andre, Pierre Desre, Xavier Biquard