Patents by Inventor Georges Boulon

Georges Boulon 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: 6086250
    Abstract: The present invention relates to a device for optically measuring the temperatures of cryogenic fluids or of moving surfaces in such fluids by analyzing the decay in the luminescence of a doped crystal, the device comprising a light source for exciting said crystal, an optical fiber for transporting the light flux emitted by said source to the crystal and for returning to a detection assembly the luminescent light emitted by the crystal as a result, and a measurement probe past which the fluid or the moving surface moves, wherein the doped crystal is constituted by one of the crystals from the group comprising strontium fluoride doped with divalent ytterbium, SrF.sub.2 :Yb.sup.2+ ; and calcium fluoride doped with divalent ytterbium, CaF.sub.2 :Yb.sup.2+.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: July 11, 2000
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation
    Inventors: Jacky Y. Rouhet, Gilbert M. Tribillon, Stephane F. Bertrand, Georges Boulon
  • Patent number: 6017148
    Abstract: The present invention relates to a device for optically measuring the temperatures of cryogenic fluids by analyzing the decay in the luminescence of a doped crystal, the device comprising a light source for exciting said crystal, an optical fiber for transporting the light flux emitted by said source to the crystal and for returning to a detection assembly the luminescent light emitted by the crystal as a result, and a measurement probe past which the fluid moves, wherein the doped crystal is constituted by one of the crystals from the group comprising strontium fluoride doped with divalent ytterbium, SrF.sub.2 :Yb.sup.2+ ; and calcium fluoride doped with divalent ytterbium, CaF.sub.2 :Yb.sup.2+. The crystal is placed at an interior end of a housing constituting the probe. The fiber has a surrounding capillary being placed in the housing facing the covering. A chamber is defined between the end of the fiber and the covering.
    Type: Grant
    Filed: May 13, 1999
    Date of Patent: January 25, 2000
    Assignee: Societe National d'Etude et de Construction de Moteurs d'Aviation
    Inventors: Jacky Y. Rouhet, Gilbert M. Tribillon, Stephane F. Bertrand, Georges Boulon
  • Patent number: 5980105
    Abstract: The present invention relates to a device for optically measuring the temperatures of cryogenic fluids or of moving surfaces in such fluids by analyzing the decay in the luminescence of a doped crystal, the device comprising a light source for exciting said crystal, an optical fiber for transporting the light flux emitted by said source to the crystal and for returning to a detection assembly the luminescent light emitted by the crystal as a result, and a measurement probe past which the fluid or the moving surface moves, wherein the doped crystal is constituted by one of the crystals from the group comprising strontium fluoride doped with divalent ytterbium, SrF.sub.2 :Yb.sup.2+ ; and calcium fluoride doped with divalent ytterbium, CaF.sub.2 :Yb.sup.2+.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: November 9, 1999
    Assignee: Societe Europeenne de Propulsion
    Inventors: Jacky Y. Rouhet, Gilbert M. Tribillon, Stephane F. Bertrand, Georges Boulon
  • Patent number: 4230598
    Abstract: A phosphor of the fluoride type mixed with potassium and yttrium doped with divalent europium, characterized in that it responds to the formulaK.sub.(1-x) Eu.sub.x Y.sub.3 F.sub.10+xwherein x is less than 0.06. The invention also concerns a process for preparing this product which may be used in a laser.
    Type: Grant
    Filed: August 25, 1978
    Date of Patent: October 28, 1980
    Assignee: Agence Nationale de Valorisation de la Recherche
    Inventors: Alain Vedrine, Jean-Claude Gacon, Georges Boulon, Danielle Trottier