Patents by Inventor Maryline NAKACHE

Maryline NAKACHE 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).

  • Perforated piezoelectric hydrophone, array comprising a plurality of hydrophones and method for making said hydrophone
    Patent number: 10644223
    Abstract: A piezoelectric hydrophone with perforations and an array comprising a plurality of hydrophones comprises a stack of layers that are bonded to one another, the layers comprising at least one piezoelectric layer and a plurality of layers referred to as rigid layers, at least two of which are electrode layers, the rigid layers exhibiting a stiffness perpendicularly to the direction of stacking, which stiffness is higher than the stiffness of the piezoelectric layer perpendicularly to the direction of stacking. At least one piezoelectric layer comprises a central zone comprising a set of perforations that pass through the piezoelectric layer solely along the direction of stacking, each perforation being closed tight by closure elements comprising portions of two of the rigid layers, the two rigid layers extending over the entirety of the surface of the central zone.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: May 5, 2020
    Assignee: THALES
    Inventors: Julien Bernard, Maryline Nakache, Robert Decarlis, Roger Thannberger, Antoine Caplain, Guy Bertrand
  • PERFORATED PIEZOELECTRIC HYDROPHONE, ARRAY COMPRISING A PLURALITY OF HYDROPHONES AND METHOD FOR MAKING SAID HYDROPHONE
    Publication number: 20180269376
    Abstract: A piezoelectric hydrophone with perforations and an array comprising a plurality of hydrophones comprises a stack of layers that are bonded to one another, the layers comprising at least one piezoelectric layer and a plurality of layers referred to as rigid layers, at least two of which are electrode layers, the rigid layers exhibiting a stiffness perpendicularly to the direction of stacking, which stiffness is higher than the stiffness of the piezoelectric layer perpendicularly to the direction of stacking. At least one piezoelectric layer comprises a central zone comprising a set of perforations that pass through the piezoelectric layer solely along the direction of stacking, each perforation being closed tight by closure elements comprising portions of two of the rigid layers, the two rigid layers extending over the entirety of the surface of the central zone.
    Type: Application
    Filed: December 10, 2015
    Publication date: September 20, 2018
    Inventors: Julien BERNARD, Maryline NAKACHE, Robert DECARLIS, Roger THANNBERGER, Antoine CAPLAIN, Guy BERTRAND