Patents by Inventor Loic Joet

Loic Joet 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: 20200271733
    Abstract: A magnetic field gradient sensor includes a support and a structure having at least a first and a second mobile element, at least one magnetic sensor, each magnetic sensor being mechanically secured to one of the first and/or second mobile elements so as to be able to apply a mechanical force to the structure in the presence of a magnetic field gradient, a coupler for coupling between the first and second mobile elements so that the structure can be moved in at least one balanced mechanical mode in the presence of a magnetic field gradient, and a sensor for measuring the movement of the structure at least in balanced mode.
    Type: Application
    Filed: November 6, 2018
    Publication date: August 27, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Guillaume JOURDAN, Bertrand DELAET, Loic JOET
  • Publication number: 20200200976
    Abstract: Hinge between a first part and a second part of a microelectromechanical system, said system comprising a first element (S) and a second element (M) free to move relative to each other in an out-of-plane direction, said hinge comprising a first rigid part (4), a second part (6) fixed to a first face of the first part (4) by one end and anchored to the second element by a second end, said second part (6) deforming in bending in the out--of-plane direction, a third part (8) fired to a first face of the first part (4) by a second end, and anchored to the first element (S) by a second end, the third part (8) deforming in bending in the out-of-plane direction (Z), and, in an undeformed state the second part (6) and the third part (8) each comprising one face located in the same plane (P2) orthogonal to the out-of-plane direction (Z).
    Type: Application
    Filed: December 19, 2019
    Publication date: June 25, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Samer DAGHER, Loic JOET
  • Publication number: 20200199923
    Abstract: Hinge for a microelectromechanical system, said system comprising a fixed part and at least one part able to move relative to the fixed part along at least an out-of-plane direction, said hinge being intended to suspend the moving part from the fixed part, said hinge comprising a first rigid part, a second part fixed to the first part at one end and intended to be anchored to the fixed part or the moving part, said second part being configured to deform in bending in a first direction, and two third parts fixed to the first part and intended to be anchored to the moving part or the fixed part, the third parts being configured to deform in bending along a second direction orthogonal to the first direction.
    Type: Application
    Filed: December 17, 2019
    Publication date: June 25, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Samer DAGHER, Loic JOET
  • Publication number: 20200203594
    Abstract: A MicroElectroMechanical System is provided, with an active element configured to carry out an electromechanical function, the active element including, from an upper face to a lower face substantially parallel to the upper face, an active layer, a core layer, and a retention layer, the active layer being configured to, under the effect of a first electric signal, go into a mechanically stressed state, configured to generate a bending of the active element in a direction perpendicular to a front face thereof, and vice versa, the active layer, the core layer, and the retention layer being arranged so that a neutral axis, associated with an elongation of zero in a case of bending of the active element, is located in a volume of one or the other of the core layer and of the retention layer, and the core layer further includes at least 20% recesses in its volume.
    Type: Application
    Filed: December 17, 2019
    Publication date: June 25, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Thierry Hilt, Stephane Fanget, Loic Joet
  • Publication number: 20200102211
    Abstract: Microelectromechanical sensor with an out-of-plane detection has a cross sensitivity in a first direction in the plane with a value of ST, the sensor comprising a support, a mass suspended from the support by beams stressed by bending, in such a way that the inertial mass is capable of moving with respect to the support about an axis of rotation contained in a plane of the sensor, a stress gauge suspended between the mass and the support. The bending beams have a dimension tf in the out-of-plane direction and the mass has a dimension tM in the out-of-plane direction such that tf=¾(tM?2larmST). Larm is the distance between the centre of gravity of the mass and the centre of the bending beams projected onto the first direction.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 2, 2020
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Loic JOET, Patrice REY
  • Publication number: 20200025793
    Abstract: An MEMS or NEMS accelerometer adapted to measure an acceleration along a sensing axis includes a substrate featuring a plane; a mass having a central zone and suspended relative to the substrate; a single lever arm comprising: a first end connected to the substrate by means of a first connection adapted to allow rotation of the lever arm about a rotation axis perpendicular to the sensing axis, and a second end connected to the mass by means of a second connection adapted to transmit movement in translation of the mass to the lever arm whilst allowing rotation of the lever arm about the rotation axis; the second end of the lever arm being disposed at the level of the central zone of the mass; at least one strain gauge comprising: a first end connected to the substrate, and a second end connected to the lever arm.
    Type: Application
    Filed: July 19, 2019
    Publication date: January 23, 2020
    Inventor: Loïc JOET
  • Publication number: 20190308873
    Abstract: A device transmits a movement and a force between a first zone and a second zone which are insulated from one another in a sealed manner. The device includes a planar support, a transmission element that is rotatably movable with respect to the support by a pivot joint having an axis of rotation that is parallel to a plane of the support, an opening in the support through which the transmission element passes and level with which the pivot joint is positioned. The transmission element includes at least one first transmission arm on one side of the plane of the support and one second transmission arm on the other side of the plane of the support, and sealed insulation positioned in the opening, such that it insulates the first zone from the second zone in a sealed manner and allows the rotational movement of the transmission element.
    Type: Application
    Filed: December 6, 2017
    Publication date: October 10, 2019
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Loic JOET
  • Patent number: 10315916
    Abstract: Microelectromechanical and/or nanoelectromechanical device comprising a support and at least one moveable element so as to be able to be displaced translationally with respect to the support, a means (G1) for translationally guiding said element, said guiding means (G1) comprising two rigid arms (6), a rotating articulation (12, 10) between each arm (6, 8) and the moveable element (4) and a rotating articulation (10, 14) between each arm (6, 8) and the support, the guiding means (G1) also comprising a coupling articulation (18) between the two arms having at least rotating articulation, said rotating articulations having axes of rotation at least parallel with each other such that during a translational displacement of the moveable element (4) the arms (6, 8) pivot with respect to each other in opposite directions, the rotating articulations being made by torsionally deformable beams.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: June 11, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Federico Maspero, Loic Joet
  • Patent number: 10257615
    Abstract: Dynamic pressure sensor of MEMS and/or NEMS type comprising a support and a rigid sensitive element anchored to the support by at least one anchoring zone, said sensitive element comprising a parallel first and a second face intended to be subjected to different pressures, said sensitive element being capable of having an out-of-plane displacement with respect to the support in a detection direction under the effect of a pressure difference, the pressure sensor also comprising a detector of a force applied to the sensitive element by the pressure difference.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: April 9, 2019
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventor: Loic Joet
  • Publication number: 20180362333
    Abstract: Microelectromechanical and/or nanoelectromechanical device comprising a support and at least one moveable element so as to be able to be displaced translationally with respect to the support, a means (G1) for translationally guiding said element, said guiding means (G1) comprising two rigid arms (6), a rotating articulation (12, 10) between each arm (6, 8) and the moveable element (4) and a rotating articulation (10, 14) between each arm (6, 8) and the support, the guiding means (G1) also comprising a coupling articulation (18) between the two arms having at least rotating articulation, said rotating articulations having axes of rotation at least parallel with each other such that during a translational displacement of the moveable element (4) the arms (6, 8) pivot with respect to each other in opposite directions, the rotating articulations being made by torsionally deformable beams.
    Type: Application
    Filed: June 14, 2018
    Publication date: December 20, 2018
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Federico MASPERO, Loic JOET
  • Patent number: 9910073
    Abstract: A measurement circuit for a sensor, the measurement circuit includes at least one detection branch including at least a first series of at least one dipole and a second series of at least one dipole, the series being connected in parallel and connected at their inputs to a common input terminal, each series of dipole being connected to a distinct output terminal, and an electronic circuit including a bias circuit configured to apply a bias current to the detection branch from the input terminal, and a read circuit configured to impose on each output terminal the same potential referred to as the “reference potential” (VREF); the electronic circuit including a determination circuit for determining variations in impedances of each series of dipole of the detection branch on the basis of the current applied to each output terminal by the read circuit so as to keep the potentials equal.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: March 6, 2018
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Loic Joet, Franck Badets, Guillaume Jourdan, Patrice Rey
  • Publication number: 20170363424
    Abstract: Microelectromechanical sensor comprising a fixed part and a mobile part suspended from the fixed part such that the mobile part can move at least in an out-of-plane displacement direction, the fixed part comprising at least first electrodes extending parallel to the displacement direction of the mobile part, the mobile part comprising a seismic mass and at least second electrodes extending parallel to the out-of-plane displacement direction, the first electrodes and the second electrodes being located relative to each other so as to be interdigitated, in which the second electrodes are directly connected to the inertial mass and only part of the face of each mobile electrode is facing an electrode fixed at rest.
    Type: Application
    Filed: June 16, 2017
    Publication date: December 21, 2017
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Federico MASPERO, Loic JOET
  • Patent number: 9631952
    Abstract: A device with a mobile element extending along a given plane comprising at least one first, one second and one third layers extending in planes parallel to the given plane, with the first layer forming a support, the second layer comprising all or a portion of the mobile element and means for suspending the mobile element with respect to the support and the third layer comprising all or a portion of the capacitive means of which the capacitance varies according to the relative position of the mobile element with respect to the support, said capacitive means comprising at least one mobile electrode integral with one of the faces of the mobile element parallel to the given plane, and at least one fixed electrode with respect to the support, with the fixed and mobile electrodes being arranged at least partially in the same plane parallel to the given plane and at least partially above and/or below the mobile element.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: April 25, 2017
    Assignee: Commissariat à l'énergie atomique et aux énergies alternatives
    Inventors: Philippe Robert, Loic Joet
  • Publication number: 20160277847
    Abstract: Dynamic pressure sensor of MEMS and/or NEMS type comprising a support and a rigid sensitive element anchored to the support by at least one anchoring zone, said sensitive element comprising a parallel first and a second face intended to be subjected to different pressures, said sensitive element being capable of having an out-of-plane displacement with respect to the support in a detection direction under the effect of a pressure difference, the pressure sensor also comprising a detector of a force applied to the sensitive element by the pressure difference.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 22, 2016
    Applicant: Commissariat A L'Energie Atomique et aux Energies Alternatives
    Inventor: Loic JOET
  • Publication number: 20150338246
    Abstract: A device with a mobile element extending along a given plane comprising at least one first, one second and one third layers extending in planes parallel to the given plane, with the first layer forming a support, the second layer comprising all or a portion of the mobile element and means for suspending the mobile element with respect to the support and the third layer comprising all or a portion of the capacitive means of which the capacitance varies according to the relative position of the mobile element with respect to the support, said capacitive means comprising at least one mobile electrode integral with one of the faces of the mobile element parallel to the given plane, and at least one fixed electrode with respect to the support, with the fixed and mobile electrodes being arranged at least partially in the same plane parallel to the given plane and at least partially above and/or below the mobile element.
    Type: Application
    Filed: May 22, 2015
    Publication date: November 26, 2015
    Applicant: Commissariat a L'Energie Atomique et aux Energies Alternatives
    Inventors: Philippe ROBERT, Loic JOET
  • Publication number: 20150293155
    Abstract: A measurement circuit for a sensor, the measurement circuit includes at least one detection branch including at least a first series of at least one dipole and a second series of at least one dipole, the series being connected in parallel and connected at their inputs to a common input terminal, each series of dipole being connected to a distinct output terminal, and an electronic circuit including a bias circuit configured to apply a bias current to the detection branch from the input terminal, and a read circuit configured to impose on each output terminal the same potential referred to as the “reference potential”; the electronic circuit including a determination circuit for determining variations in impedances of each series of dipole of the detection branch on the basis of the current applied to each output terminal by the read circuit so as to keep the potentials equal.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 15, 2015
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Loic JOET, Franck BADETS, Guillaume JOURDAN, Patrice REY
  • Patent number: 8369817
    Abstract: An analog finite impulse response (AFIR) filter including at least one variable transconductance block having an input for receiving an input voltage and being adapted to sequentially apply each of a plurality of transconductance levels to the input voltage during at least one of a plurality of successive time periods to generate an output current at an output of the variable transconductance block, the at least one variable transconductance block including a plurality of fixed transconductance blocks each receiving the input voltage and capable of being independently activated to supply the output current; and a capacitor coupled to the output of the variable transconductance block to receive the output current and provide an output voltage of the filter.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: February 5, 2013
    Assignee: STMicroelectronics S.A.
    Inventors: Eoin Ohannaidh, Stéphane Le Tual, Loïc Joet
  • Publication number: 20100171548
    Abstract: An analog finite impulse response (AFIR) filter including at least one variable transconductance block having an input for receiving an input voltage and being adapted to sequentially apply each of a plurality of transconductance levels to the input voltage during at least one of a plurality of successive time periods to generate an output current at an output of the variable transconductance block, the at least one variable transconductance block including a plurality of fixed transconductance blocks each receiving the input voltage and capable of being independently activated to supply the output current; and a capacitor coupled to the output of the variable transconductance block to receive the output current and provide an output voltage of the filter.
    Type: Application
    Filed: January 20, 2010
    Publication date: July 8, 2010
    Applicant: STMicroelectronics S.A.
    Inventors: Eoin Ohannaidh, Stéphane Le Tual, Loïc Joet
  • Patent number: 7705760
    Abstract: The invention relates to a method for the filtering and analog/digital conversion of an incoming analog signal including an analog filtering of the incoming analog signal so as to filter the frequency components located outside a desired frequency band, and a conversion of the filtered analog signal to a digital signal. The digital signal is reformatted in a form that is substantially similar, at least in the desired frequency band, to the form of the incoming analog signal. A final digital filtering of the reformatted digital signal is performed so as to filter the frequency components located outside the desired frequency band.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: April 27, 2010
    Assignee: STMicroelectronics SA
    Inventor: Loïc Joet
  • Patent number: 7671780
    Abstract: A method is for processing an incident signal, in which the incident signal is delivered to a transconductor stage, and a current output of the transconductor stage is coupled to an output capacitor so as to deliver to the output capacitor a current signal lasting for at least part of the first half-period of each period of a periodic signal and to thus obtain a frequency-transposed signal at the output capacitor. Upon the occurrence of each part of the first half-period, the voltage of the current output, seen from the output capacitor, is reset to a value equal to that of the voltage of the output capacitor.
    Type: Grant
    Filed: January 16, 2008
    Date of Patent: March 2, 2010
    Assignee: STMicroelectronics S.A.
    Inventor: Loïc Joet