Patents by Inventor Anne Ghis

Anne Ghis 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).

  • Publication number: 20200374636
    Abstract: A capacitive vibrating-membrane ultrasonic transducer includes a carrier with a cavity, a vibrating membrane fastened to the carrier and covering the cavity, and a conductive element separated from the membrane by the cavity. The vibrating membrane has a resonant frequency in membrane mode fm and a resonant frequency in plate mode fp according to the relationship fm>fp. An exciting circuit has terminals connected to the vibrating membrane and the conductive element, and is configured to apply, across its terminals, an electrical signal the maximum frequency fo according to the relationship fm>1.5*fo; or a measuring circuit is connected to the vibrating membrane and the conductive element and configured to measure capacitance variations up to a frequency fo.
    Type: Application
    Filed: December 20, 2019
    Publication date: November 26, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Anne GHIS, Marc DELAUNAY
  • Publication number: 20180315584
    Abstract: A device for producing an amorphous carbon layer by electron cyclotron resonance plasma, the device including a plasma chamber; a gas supply; a magnetic mirror; a waveguide extending along a reference axis; a system for injecting microwave power; a magnetic field generator for generating a magnetic field in the plasma chamber, the magnetic field generator being configured to create a beam of magnetic field lines along which plasma is diffused; a target made from carbon; a substrate holder, wherein the target is arranged at a distance from the reference axis of between Rtarget/2 and Rtarget, and wherein the device further includes a screen arranged between the waveguide and the substrate holder.
    Type: Application
    Filed: October 25, 2016
    Publication date: November 1, 2018
    Inventors: Marc DELAUNAY, Anne GHIS
  • Patent number: 9975755
    Abstract: A microelectromechanical system includes a membrane of amorphous carbon having a thickness between 1 nm and 50 nm, and for example between 3 nm and 20 nm.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: May 22, 2018
    Assignee: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES
    Inventors: Anne Ghis, Marc Delaunay
  • Publication number: 20170260041
    Abstract: A microelectromechanical system includes a membrane of amorphous carbon having a thickness between 1 nm and 50 nm, and for example between 3 nm and 20 nm.
    Type: Application
    Filed: March 10, 2017
    Publication date: September 14, 2017
    Inventors: Anne GHIS, Marc DELAUNAY
  • Patent number: 9074985
    Abstract: The invention concerns a device for analysing the microporosities of a given material including at least two phases, one of which is a fluid phase, including: multiple sensors (100) incorporated in the given material (M), where each of the sensors includes one or more cMUT acoustic and capacitive transducers.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: July 7, 2015
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES, ECOLE NATIONALE DES PONTS ET CHAUSSEES
    Inventors: Berengere Lebental, Elisabeth Delevoye, Anne Ghis
  • Patent number: 8873341
    Abstract: A cMUT-type capacitive electroacoustic transducer including: at least one membrane configured to oscillate under effect of an electric field and/or an acoustic wave, wherein the membrane is formed from one or more layers of juxtaposed nanotubes or nanowires or nanorods, and an acoustic imaging device or UHF sonar including such transducers.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: October 28, 2014
    Assignees: Commissariat a l'energie Atomique et aux Energies Alternatives, Laboratoire Central des Ponts et Chaussees, Ecole Nationale des Ponts et Chaussees
    Inventors: Berengere Lebental, Anne Ghis
  • Publication number: 20110242932
    Abstract: A cMUT-type capacitive electroacoustic transducer including: at least one membrane configured to oscillate under effect of an electric field and/or an acoustic wave, wherein the membrane is formed from one or more layers of juxtaposed nanotubes or nanowires or nanorods, and an acoustic imaging device or UHF sonar including such transducers.
    Type: Application
    Filed: November 20, 2009
    Publication date: October 6, 2011
    Inventors: Bèrengére Lebental, Anne Ghis
  • Publication number: 20110226065
    Abstract: A device for analyzing microporosities of a given material including at least two phases, one of which is a fluid phase, the device including: multiple sensors incorporated in the given material, wherein each of the sensors includes one or more cMUT acoustic and capacitive transducers.
    Type: Application
    Filed: November 20, 2009
    Publication date: September 22, 2011
    Applicants: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT, LABORATOIRE CENTRAL DES PONTS ET CHAUSSEES, ECOLE NATIONALE DES PONTS ET CHAUSSESS
    Inventors: Berengere Lebental, Elisabeth Delevoye, Anne Ghis
  • Patent number: 6954087
    Abstract: A sampling device for high frequency signal that propagates in a propagation structure. The device comprises a first stage (A1, I1, C1) to sample a first signal at a first time t1 and at least one second stage (A2, I2, C2) in series with the first stage to take a second sample representative of the first sample, starting from the first sample, taken at a second time t2 greater than t1, the life-time of the second sample being longer than the life-time of the first sample.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: October 11, 2005
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Anne Ghis, Patrice Ouvrier-Buffet, Nathalie Rolland, Aziz Benlarbi-Delai
  • Publication number: 20040145391
    Abstract: A sampling device for high frequency signal that propagates in a propagation structure. The device comprises a first stage (A1, I1, C1) to sample a first signal at a first time t1 and at least one second stage (A2, I2, C2) in series with the first stage to take a second sample representative of the first sample, starting from the first sample, taken at a second time t2 greater than t1, the life-time of the second sample being longer than the life-time of the first sample.
    Type: Application
    Filed: November 12, 2003
    Publication date: July 29, 2004
    Inventors: Anne Ghis, Patrice Ouvrier-Buffet, Nathalie Rolland, Aziz Benlarbi-Delai
  • Patent number: 6680606
    Abstract: An electrical sampler device has a plurality of samplers for sampling an electrical signal. Each of the samplers is responsive to a corresponding sampling point. The electrical sampler device also has a propagation line coupled to each of the plurality of samplers, for propagating a sampling signal. One or more delay elements are coupled to the propagation line. The delay means elements delay the propagation of the sampling signal between two neighboring samplers.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: January 20, 2004
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Anne Ghis, Sami Ajram
  • Patent number: 6376825
    Abstract: The invention relates to a single short radiation pulse analyzer comprising radiation detectors that convert this radiation into an electrical signal, and means of measuring this signal by sampling at different times.
    Type: Grant
    Filed: February 8, 2000
    Date of Patent: April 23, 2002
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Anne Ghis, Marie-Claude Gentet
  • Patent number: 6246044
    Abstract: A sampler adapted for the measurement of ultra-short electrical pulses of a very broad spectrum. The sampler has an electrical pulse propagation structure (i.e., propagation line) made up of a series of line sections. The line sections are linked to one another by switches which can be commanded electrically. Normally, the switches are on or closed. The taking of samples can occur by opening the switches to thereby confine the totality of the charges carried by the pulse to the different sections that make up the propagation line. Once the switches are opened, the charge may be sampled in each section.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: June 12, 2001
    Assignee: Commissariat a l'Energie Atomique
    Inventor: Anne Ghis
  • Patent number: 5138308
    Abstract: A process for regulating the brightness of a microdot fluorescent screen and apparatus for performing this process. The screen is of the matrix type and is addressed by a scan of the rows, a pixel being formed at each row-column intersection. For an illuminated pixel, for a selection time T of the corresponding row, a quantity of charges is emitted by the associated microdots. The brightness is regulated during the selection time of each row by controlling the quantity of charges emitted by the microdots of each pixel to be illuminated, the charge quantity being identical for each pixel.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: August 11, 1992
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Jean-Frederic Clerc, Anne Ghis
  • Patent number: 5075683
    Abstract: A process and device for controlling a matrix screen displaying gray levels, wherein during the line time T activation signals are delivered to the columns of the screen for a time depending on the gray level i of the image point in question and equal to (T/N).Nil, where O.ltoreq.i.ltoreq.m.ltoreq.N, the Nils forming a strictly increasing sequence of i of first term zero and of last term lower than or equal to N, the Nils being so selected as to obtain a predetermined distribution for the light intensities of the different gray levels.Application to the control of microdot or liquid crystal matrix screens.
    Type: Grant
    Filed: June 14, 1989
    Date of Patent: December 24, 1991
    Assignee: Commissariat a l'Energie Atomique
    Inventor: Anne Ghis