Patents by Inventor Pierre Petit

Pierre Petit 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).

  • Patent number: 11857912
    Abstract: A process for producing a purified gas stream having impurities, using a production unit for producing a gas stream and a storage reservoir. The process includes producing a first gas stream by means of the production unit. Storing at least a portion of the first gas stream in the storage reservoir. Extracting, from the storage reservoir, a second gas stream corresponding to at least one portion of the first stream polluted by the impurities. Purifying the second gas stream by transfer of at least one portion of the impurities contained in the second gas stream into the first gas stream. And recovery of the purified gas stream at the output of the purification.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: January 2, 2024
    Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventors: Christian Monereau, David Frimat, Vincent Gueret, Pierre Petit
  • Patent number: 11819796
    Abstract: A method for producing oxygen from air using vacuum swing adsorption by means of a unit including at least two adsorbers each following, with an offset a pressure cycle, with a decompression step including at least a co-current first decompression sub-step for the partial balancing of pressure with the other adsorber which is performing counter-current recompression by means of a balancing valve, and, at least for one cycle out of three, a dead time sub-step which succeeds the first decompression sub-step, the method including a pressure of X bar at the end of the first decompression sub-step for the cycles that do not have a dead time sub-step, and a pressure of X bar at the end of the dead time sub-step, opening the balancing valve identically during the first decompression sub-step and the dead time sub-step, for the cycles that do have a dead time sub-step.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: November 21, 2023
    Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventors: Guillaume Rodrigues, François Darrigade, Patrick Le Bot, Pierre Petit, Stéphane Pusiol, Maxime Perez
  • Publication number: 20230158444
    Abstract: The invention relates to a method for regulating a unit for separating a gas stream, having P adsorbers, where P?2, each following a PSA-type adsorption cycle with a phase time shift, the method involving the steps of operating the unit according to the nominal cycle when the required flow rate is equal to a nominal flow rate or optionally when the required flow rate is higher than the nominal flow rate, and operating the unit according to the reduced cycle when the required flow rate is lower than or equal to a predetermined flow rate, the predetermined flow rate being lower than the nominal flow rate.
    Type: Application
    Filed: November 22, 2022
    Publication date: May 25, 2023
    Inventors: Maxime PEREZ, Guillaume RODRIGUES, Christian MONEREAU, Stéphane PUSIOL, Pierre PETIT
  • Patent number: 11629746
    Abstract: The invention concerns a unit (210) for a locking device, comprising: a nut (212) comprising two coaxial taps in opposite directions; and a ring (213); said ring including a third tap (38); the first (18) and third (38) taps being capable of engaging with a single first thread (22); said ring including a second thread (40) capable of engaging with the second tap (20) of the nut. The unit further comprises a washer (214) configured (274) so as to be inserted around one (212) of the nut and the ring, the washer comprising an elastic engagement means (272) for engaging with the other (213) of the ring and the nut in an installation position of the unit, so as to prevent the ring and the nut from rotating relative to each other.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: April 18, 2023
    Assignee: LISI AEROSPACE
    Inventors: Martial Broucke, Gildas Boleis, Alan Philippe, Pierre Petit
  • Patent number: 11519450
    Abstract: The invention relates to a locking device (300) comprising: a shaft (24) comprising a first thread (22); and a nut (12) and a ring (13) to be assembled on the shaft; the nut comprising a first inner thread (18) defining a first radial clearance with the first thread of the shaft; the nut further comprising a second inner thread (20) in the opposite direction to the first inner thread, the ring (13) comprising a second thread (40) defining a second radial clearance with the second inner thread of the nut; the ring comprising a third inner thread (38) defining a third radial clearance with the first thread of the shaft. The inner threads and the first and second threads have an identical and constant thread pitch; and each of the second and third radial clearances is greater than the first radial clearance.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: December 6, 2022
    Assignee: LISI AEROSPACE
    Inventors: Gildas Boleis, Alan Philippe, Pierre Petit, Martial Broucke
  • Patent number: 11466723
    Abstract: The present invention relates to a unit (10) for a locking device, including: a nut (12) comprising first (18) and second (20) coaxial taps in opposite directions; and a ring (13); said ring including a third tap (38); the first (18) and third (38) taps being capable of engaging with a single first thread (22); said ring including a second thread (40) capable of engaging with the second tap (20) of the nut. A portion (33) of the ring, projecting relative to the second thread (40), includes a through-hole (60); and a surface (16) of the nut includes a visual marking, configured to be opposite the hole (60) when the nut and the ring are in an installation position, and separated from said hole when the nut and the ring are outside said installation position.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: October 11, 2022
    Assignee: LISI AEROSPACE
    Inventors: Gildas Boleis, Alan Philippe, Pierre Petit, Martial Broucke
  • Publication number: 20210039039
    Abstract: A method for producing oxygen from air using vacuum swing adsorption by means of a unit comprising at least two adsorbers each following, with an offset a pressure cycle, with a decompression step comprising at least a co-current first decompression sub-step for the partial balancing of pressure with the other adsorber which is performing counter-current recompression by means of a balancing valve, and, at least for one cycle out of three, a dead time sub-step which succeeds the first decompression sub-step, the method including a pressure of X bar at the end of the first decompression sub-step for the cycles that do not have a dead time sub-step, and a pressure of X bar at the end of the dead time sub-step, opening the balancing valve identically during the first decompression sub-step and the dead time sub-step, for the cycles that do have a dead time sub-step.
    Type: Application
    Filed: February 25, 2019
    Publication date: February 11, 2021
    Inventors: Guillaume RODRIGUES, François DARRIGADE, Patrick LE BOT, Pierre PETIT, Stéphane PUSIOL, Maxime PEREZ
  • Publication number: 20210023498
    Abstract: A process for producing a purified gas stream having impurities, using a production unit for producing a gas stream and a storage reservoir. The process includes producing a first gas stream by means of the production unit. Storing at least a portion of the first gas stream in the storage reservoir. Extracting, from the storage reservoir, a second gas stream corresponding to at least one portion of the first stream polluted by the impurities. Purifying the second gas stream by transfer of at least one portion of the impurities contained in the second gas stream into the first gas stream. And recovery of the purified gas stream at the output of the purification.
    Type: Application
    Filed: March 7, 2019
    Publication date: January 28, 2021
    Inventors: Christian MONEREAU, David FRIMAT, Vincent GUERET, Pierre PETIT
  • Publication number: 20200240457
    Abstract: The invention relates to a locking device (300) comprising: a shaft (24) comprising a first thread (22); and a nut (12) and a ring (13) to be assembled on the shaft; the nut comprising a first inner thread (18) defining a first radial clearance with the first thread of the shaft; the nut further comprising a second inner thread (20) in the opposite direction to the first inner thread, the ring (13) comprising a second thread (40) defining a second radial clearance with the second inner thread of the nut; the ring comprising a third inner thread (38) defining a third radial clearance with the first thread of the shaft. The inner threads and the first and second threads have an identical and constant thread pitch; and each of the second and third radial clearances is greater than the first radial clearance.
    Type: Application
    Filed: September 26, 2018
    Publication date: July 30, 2020
    Applicant: LISI AEROSPACE
    Inventors: GILDAS BOLEIS, ALAN PHILIPPE, PIERRE PETIT, MARTIAL BROUCKE
  • Publication number: 20200224708
    Abstract: The invention concerns a unit (210) for a locking device, comprising: a nut (212) comprising two coaxial taps in opposite directions; and a ring (213); said ring including a third tap (38); the first (18) and third (38) taps being capable of engaging with a single first thread (22); said ring including a second thread (40) capable of engaging with the second tap (20) of the nut. The unit further comprises a washer (214) configured (274) so as to be inserted around one (212) of the nut and the ring, the washer comprising an elastic engagement means (272) for engaging with the other (213) of the ring and the nut in an installation position of the unit, so as to prevent the ring and the nut from rotating relative to each other.
    Type: Application
    Filed: September 25, 2018
    Publication date: July 16, 2020
    Applicant: LISI AEROSPACE
    Inventors: MARTIAL BROUCKE, BOLEIS GILDAS, ALAN PHILIPPE, PIERRE PETIT
  • Publication number: 20200224707
    Abstract: The present invention relates to a unit (10) for a locking device, including: a nut (12) comprising first (18) and second (20) coaxial taps in opposite directions; and a ring (13); said ring including a third tap (38); the first (18) and third (38) taps being capable of engaging with a single first thread (22); said ring including a second thread (40) capable of engaging with the second tap (20) of the nut. A portion (33) of the ring, projecting relative to the second thread (40), includes a through-hole (60); and a surface (16) of the nut includes a visual marking, configured to be opposite the hole (60) when the nut and the ring are in an installation position, and separated from said hole when the nut and the ring are outside said installation position.
    Type: Application
    Filed: September 26, 2018
    Publication date: July 16, 2020
    Applicant: LISI AEROSPACE
    Inventors: GILDAS BOLEIS, ALAN PHILIPPE, PIERRE PETIT, MARTIAL BROUCKE
  • Publication number: 20190064854
    Abstract: A technique provides for management of multiple flow assurance functionalities in a pipe-in-pipe system. A station for use in a subsea pipe-in-pipe system may comprise an inner flow conduit to provide an inner flow passage for a first fluid and an outer flow conduit to provide an annular flow passage for a second fluid. The station also may comprise a network of valves and conduits coupled to the inner flow conduit and to the outer flow conduit. The valves are individually adjustable to enable selection of multiple flow assurance functionalities so as to ensure continued fluid flow capability following a plug. Depending on the parameters of a given application, a plurality of the stations may be combined with a plurality of pipe-in-pipe sections to form a suitable subsea pipe-in-pipe system.
    Type: Application
    Filed: August 25, 2017
    Publication date: February 28, 2019
    Inventors: Hosam M. Abu-Zeid, Alexi Santiago, Pierre Petit, Deandrick Williams
  • Patent number: 7689424
    Abstract: This invention relates to a distributed speech recognition method comprising at least one user terminal and at least one server which can communicate with each other by means of a telecommunication network. The inventive method comprises the following steps consisting in: at the user terminal, attempting to associate a saved form with the signal to be recognized and, independently of said step, transmitting a signal to the server, indicating the signal to be recognized; and, at the server, attempting to associate a saved form with the signal received.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: March 30, 2010
    Assignee: France Telecom
    Inventors: Jean Monne, Jean-Pierre Petit, Patrick Brisard
  • Publication number: 20080287344
    Abstract: The invention concerns the use of monohydroxy or polyhydroxy amino acids, and the lactone forms thereof for making medicines with insulin-analogue and/or insulin-sensitizing effects on peripheral tissues targeted by insulin, and more particularly the use thereof for making medicines for treating and preventing insulin-resistance.
    Type: Application
    Filed: July 21, 2008
    Publication date: November 20, 2008
    Applicant: Innodia Inc.
    Inventors: Gerard Ribes, Mohammed Taouis, Roger Pierre Petit, Christophe Broca, Yves Sauvaire, Bernard Pau
  • Patent number: 7402611
    Abstract: The invention concerns the use of monohydroxy or polyhydroxy amino acids, and the lactone forms thereof for making medicines with insulin-analogue and/or insulin-sensitizing effects on peripheral tissues targeted by insulin, and more particularly the use thereof for making medicines for treating and preventing insulin-resistance.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: July 22, 2008
    Assignee: Innodia Inc.
    Inventors: Gérard Ribes, Mohammed Taouis, Roger Pierre Petit, Christophe Broca, Yves Sauvaire
  • Patent number: 7387839
    Abstract: The subject of the invention is a substrate provided on at least part of at least one of its faces with a coating having photocatalytic properties, containing photocatalytic titanium oxide, especially crystallized in the anatase form, in an essentially mineral binder comprising at least one semiconducting metal oxide. The subject of the invention is also a process for obtaining said substrate, especially by thermal decomposition of precursors or by a vacuum deposition technique.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: June 17, 2008
    Assignee: Saint-Gobain Glass France
    Inventors: Lethicia Gueneau, Mauricette Rondet, Ronan Garrec, Jean-Pierre Petit, Alain Denoyelle, Yves Wouters
  • Patent number: 7319093
    Abstract: 2-Substituted-5?-O-(1-boranotriphosphate)adenosine derivatives having at position 2 a radical R1 selected from the group consisting of H; halogen; O-hydrocarbyl; S-hydrocarbyl; NR3R4; and hydrocarbyl optionally substituted by halogen, CN, SCN, NO2, OR3, SR3 or NR3R4; wherein R3 and R4 are each independently H or hydrocarbyl or R3 and R4 together with the nitrogen atom to which they are attached form a saturated or unsaturated heterocyclic ring optionally containing 1-2 further heteroatoms selected from oxygen, nitrogen and sulfur, and pharmaceutically acceptable salts or diastereoisomers thereof or a mixture of diastereoisomers, are useful for treatment of type 2 diabetes.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: January 15, 2008
    Assignees: Bar-Ilan University, University of Montpellier
    Inventors: Bilha Fischer, Victoria Kleiman-Nahum, Pierre Petit
  • Patent number: 7253631
    Abstract: The invention relates to a method of determining the complex impedance Z(fm) of a non-steady electrochemical system, comprising the following steps consisting in: bringing the system to a selected voltage condition and applying a sinusoidal signal with frequency fm thereto; immediately thereafter, measuring successive values for voltage and current at regular time intervals ?T; calculating the discrete Fourier transforms for voltage (E(f)) and current (I(f)), the voltage transform being calculated for the single frequency fm of the sinusoidal signal and the current transform being calculated for frequency fm and for two adjacent frequencies fm?1 and fm+1 on either side of frequency fm; and calculating the impedance using the following formula: Z(fm)=E(fm)/I*(fm), wherein I* denotes a corrected current such that Re[I*(fm)]=Re[I*(fm)]?(Re[I(fm+1)]+Re[I(fm?1)]2, Im[I*(fm)]=Im[I(fm)]?Im[I(fm+1)]+Im[I(fm?1)])/2.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: August 7, 2007
    Assignee: Institut National Polytechnique de Grenoble
    Inventors: Bogdan Petrescu, Jean-Pierre Petit, Jean-Claude Poignet
  • Publication number: 20070061147
    Abstract: This invention relates to a distributed speech recognition method comprising at least one user terminal and at least one server which can communicate with each other by means of a telecommunication network. The inventive method comprises the following steps consisting in: at the user terminal, attempting to associate a saved form with the signal to be recognized and, independently of said step, transmitting a signal to the server, indicating the signal to be recognized; and, at the server, attempting to associate a saved form with the signal received.
    Type: Application
    Filed: March 8, 2004
    Publication date: March 15, 2007
    Inventors: Jean Monne, Jean-Pierre Petit, Patrick Brisard
  • Publication number: 20060195323
    Abstract: This invention relates to a distributed speech recognition system. The inventive system consists of: at least one user terminal comprising means for obtaining an audio signal to be recognized, parameter calculation means and control means which are used to select a signal to be transmitted; and a server comprising means for receiving the signal, parameter calculation means, recognition means and control means which are used to control the calculation means and the recognition means according to the signal received.
    Type: Application
    Filed: March 8, 2004
    Publication date: August 31, 2006
    Inventors: Jean Monne, Jean-Pierre Petit, Patrick Brisard