Patents by Inventor René Lefevre

René Lefevre 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: 20040246557
    Abstract: The present invention relates to an integrated optoelectronic device (100) comprising an electroabsorption modulator (10) suitable for delivering an output modulated optical signal (Sf) carrying data, and an electronic control element (20) suitable for driving said modulator. The modulator (10) comprises a plurality of modulation sections (11, 12, 13) that are optically coupled together, each having a respective electrode (1, 2, 3), each of said modulation sections being suitable for receiving an optical signal delivered by the adjacent modulation section disposed upstream in the light propagation direction (Z).
    Type: Application
    Filed: May 28, 2004
    Publication date: December 9, 2004
    Applicant: ALCATEL
    Inventors: Rene Lefevre, Pascal Pecci
  • Patent number: 6788149
    Abstract: A biasing system for biasing an electronic circuit includes a resistance connected in series with a transmission line which has a characteristic impedance substantially equal to the resistance and comprises a conductive line and a plurality of current sources distributed along the conductive line. The biasing system can be used as a biasing and/or matching supply for any type of broad-band low-noise power application requiring high bias currents.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: September 7, 2004
    Assignee: Avanex Corporation
    Inventors: Wissam Mouzannar, René Lefevre
  • Publication number: 20030006846
    Abstract: A biasing system for biasing an electronic circuit includes a resistance connected in series with a transmission line which has a characteristic impedance substantially equal to the resistance and comprises a conductive line and a plurality of current sources distributed along the conductive line. The biasing system can be used as a biasing and/or matching supply for any type of broad-band low-noise power application requiring high bias currents.
    Type: Application
    Filed: June 25, 2002
    Publication date: January 9, 2003
    Applicant: ALCATEL
    Inventors: Wissam Mouzannar, Rene Lefevre
  • Patent number: 6059242
    Abstract: A fixing device, notably for wall fixing, for profiled electrical conduit which includes a central part, a head and a foot intended respectively to be fitted by suitable shapes against a side wall and the upper and lower walls of the conduit envelope, characterised in that the head comprises a fixed part and a pivoting component pivotably mounted on the fixed part along an axis oriented along the length of the conduit, the pivoting component being intended to hook onto the upper wall of the conduit and to be locked by elastic mechanism.
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: May 9, 2000
    Assignee: Schneider Electric SA
    Inventors: Rene Lefevre, Paul Milliere
  • Patent number: 4820897
    Abstract: Process for the production of miniature piezoelectric devices using machining by laser and devices obtained by this process.The piezoelectric material formed by lithium niobate or lithium tantalate is cut by means of the laser.Application to the production or resonators and filters, which can be used in electronics.
    Type: Grant
    Filed: May 5, 1987
    Date of Patent: April 11, 1989
    Inventor: Rene Lefevre