Patents by Inventor Philippe Lafleur

Philippe Lafleur 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: 10082437
    Abstract: There is described an optical pressure sensor comprising a sensor housing and an optical pressure cell mounted within the sensor housing and dividing the sensor housing into a first fluid space and a second fluid space. The optical pressure cell comprises a front side exposed to a pressure in the first fluid space and a back side exposed to a pressure in the second fluid space. The optical pressure sensor further comprises a fluid communication arrangement allowing pressure equalization between the pressure in the first fluid space on the front side and the pressure in the second fluid space on the back side of the optical pressure cell.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: September 25, 2018
    Inventors: Gaétan Duplain, Sylvain Bussière, Philippe Lafleur
  • Publication number: 20170082514
    Abstract: There is described an optical pressure sensor comprising a sensor housing and an optical pressure cell mounted within the sensor housing and dividing the sensor housing into a first fluid space and a second fluid space. The optical pressure cell comprises a front side exposed to a pressure in the first fluid space and a back side exposed to a pressure in the second fluid space. The optical pressure sensor further comprises a fluid communication arrangement allowing pressure equalization between the pressure in the first fluid space on the front side and the pressure in the second fluid space on the back side of the optical pressure cell.
    Type: Application
    Filed: September 21, 2016
    Publication date: March 23, 2017
    Inventors: Gaétan DUPLAIN, Sylvain BUSSIÈRE, Philippe LAFLEUR
  • Patent number: 6529088
    Abstract: A tunable resonant system includes an electric element, and a core having a controllable parameter that determines the resonant frequency of the system. In order to tune the resonant system to a desired frequency, a low power, narrowband signal is applied at a selected frequency to the electric element. The reflected or transmitted power is measured and the value of the controllable parameter adjusted to vary the resonant frequency of the system in a closed loop until the reflected power is at a minimum.
    Type: Grant
    Filed: December 26, 2000
    Date of Patent: March 4, 2003
    Assignee: Vistar Telecommunications Inc.
    Inventors: Philippe Lafleur, David Roscoe
  • Publication number: 20020079982
    Abstract: A tunable resonant system includes an electric element, and a core having a controllable parameter that determines the resonant frequency of the system. In order to tune the resonant system to a desired frequency, a low power, narrowband signal is applied at a selected frequency to the electric element. The reflected or transmitted power is measured and the value of the controllable parameter adjusted to vary the resonant frequency of the system in a closed loop until the reflected power is at a minimum.
    Type: Application
    Filed: December 26, 2000
    Publication date: June 27, 2002
    Inventors: Philippe Lafleur, David Roscoe
  • Patent number: 6181286
    Abstract: An integrated dual-mode antenna including a quadrifilar antenna and a collocated monopole antenna. The integrated antenna is compact and unencumbered by signal blockage or isolation problems.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: January 30, 2001
    Assignee: Vistar Telecommunications Inc.
    Inventors: David Roscoe, Philippe Lafleur, Brian Clarke
  • Patent number: 6133882
    Abstract: An antenna array is disclosed wherein radiators are parasitically coupled to each other, forming an efficient feed network. Parasitic coupling of patches is arranged so that some patches are fed by a plurality of other patches which are parasitically coupled thereto. The resulting array is low profile and high gain. By positioning patches on different layers with different dimensions, a broadband design for the antenna array is achieved.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: October 17, 2000
    Assignees: Her Majesty the Queen in right of Canada, as represented by the Minister of Industry through Communications Research Centre, Resonance Microwave Systems Inc.
    Inventors: Philippe LaFleur, David Roscoe, James S. Wight