Patents by Inventor Sébastien GROUSSET

Sébastien GROUSSET 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).

  • Surface elastic wave device comprising a single-crystal piezoelectric film and a crystalline substrate with low visoelastic coefficients
    Patent number: 10270420
    Abstract: A surface elastic wave device comprises a stack including: a thin film made of a piezoelectric first material; a substrate made from a second material; and exciting means for generating at least one surface acoustic wave propagation mode in the piezoelectric film; wherein: the first material is a single-crystal material and the second material is a crystalline material, the thickness of the thin film of piezoelectric first material being smaller than or equal to 20 ?m, and the first material and the second material having viscoelastic coefficients lower than or equal to those of quartz for the propagation mode induced by the exciting means.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: April 23, 2019
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
    Inventors: Sébastien Grousset, Sylvain Ballandras
  • SURFACE ELASTIC WAVE DEVICE COMPRISING A SINGLE-CRYSTAL PIEZOELECTRIC FILM AND A CRYSTALLINE SUBSTRATE WITH LOW VISOELASTIC COEFFICIENTS
    Publication number: 20160261248
    Abstract: A surface elastic wave device comprises a stack including: a thin film made of a piezoelectric first material; a substrate made from a second material; and exciting means for generating at least one surface acoustic wave propagation mode in the piezoelectric film; wherein: the first material is a single-crystal material and the second material is a crystalline material, the thickness of the thin film of piezoelectric first material being smaller than or equal to 20 ?m, and the first material and the second material having viscoelastic coefficients lower than or equal to those of quartz for the propagation mode induced by the exciting means.
    Type: Application
    Filed: March 3, 2016
    Publication date: September 8, 2016
    Inventors: Sébastien GROUSSET, Sylvain BALLANDRAS