Patents by Inventor Frederic Hamouda

Frederic Hamouda 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).

  • MICROSTRUCTURED SCAFFOLD FOR THE PREPARATION OF A TISSUE IMPLANT
    Publication number: 20240360396
    Abstract: The preparation of a microstructured scaffold corresponding to a biocompatible membrane-type support material for cell culture, and a composition that includes the microstructured scaffold and cells, in particular photoreceptors. Also, the preparation of an implantable graft for the treatment of diseases of the retinal pigment epithelium and the neural retina.
    Type: Application
    Filed: July 21, 2022
    Publication date: October 31, 2024
    Applicants: CENTRE D'ETUDE DES CELLULES SOUCHES, UNIVERSITE D'EVRY VAL D'ESSONNE, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITÉ PARIS-SACLAY
    Inventors: Christelle MONVILLE, Elise HERARDOT, Karim BEN M'BAREK, Frédéric HAMOUDA
  • Apparatus for supplying a standard frequency signal using a simple microwave synthesis
    Patent number: 7113046
    Abstract: The invention relates to a device (1) for producing a reference frequency signal (Se) from the response of an atomic resonator (R) to a pumping signal (Fat) transmitted thereto, comprising: a first oscillator for production of a first signal (S1) of frequency (F0) as a function of the response signal (E1) from the resonator (R); a second oscillator (13) for production of a second signal (S2) at a frequency (NF0) which is equal to a whole multiple of that of the first signal (S1). According to the invention, the second oscillator is selected to produce a second signal (S2) close in frequency to the frequency of resonance for the resonator (R).
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: September 26, 2006
    Assignees: Centre National de la Recherche Scientifique (C.N.R.S.), Centre National d'Etudes Spatiales
    Inventors: Roland Barillet, Claude Audoin, Frederic Hamouda
  • Device for producing a reference frequency signal
    Publication number: 20040232994
    Abstract: The invention relates to a device (1) for producing a reference frequency signal (Se) from the response of an atomic resonator (R) to a pumping signal (Fat) transmitted thereto, comprising: a first oscillator for production of a first signal (S1) of frequency (F0) as a function of the response signal (E1) from the resonator (R); a second oscillator (13) for production of a second signal (S2) at a frequency (NF0) which is equal to a whole multiple of that of the first signal (S1). According to the invention, the second oscillator is selected to produce a second signal (S2) close in frequency to the frequency of resonance for the resonator (R).
    Type: Application
    Filed: June 7, 2004
    Publication date: November 25, 2004
    Inventors: Roland Barillet, Claude Audoin, Frederic Hamouda
  • Method of controlling the amplitude of the microwave signal applied to an atomic clock and follow-up interlocking device for carrying out this method
    Patent number: 6157261
    Abstract: A method of controlling the amplitude of the microwave signal applied to an atomic clock comprising an atomic resonator and a device for interlocking an ultra-stable oscillator in follow-up relationship with the atomic resonance, adapted to produce the signal from which the microwave signal is derived, the method consisting in transforming the amplitude of the microwave signal before its application to the atomic jet resonator according to a law such that the shape of the curve of atomic response versus the amplitude of the microwave signal be symmetrical over a wide extent about the vertical line passing through the maximum of the response.
    Type: Grant
    Filed: October 29, 1998
    Date of Patent: December 5, 2000
    Assignee: Tekelec Temex
    Inventors: Claude Audoin, Frederic Hamouda, Luc Chassagne, Roland Barillet