Patents by Inventor Gilles Bondieu

Gilles Bondieu 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).

  • CVI (chemical vapor infiltration) densification of porous structures
    Patent number: 6410088
    Abstract: The present invention provides a method of densifying porous structures by chemical vapor infiltration. In characteristic manner, said densification method is implemented using toluene as a precursor for carbon. Said toluene is generally used mixed with at least one carrier gas.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: June 25, 2002
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation S.N.E.C.M.A.
    Inventors: Christian Robin-Brosse, Jacques Thebault, Yves Patrigeon, Gilles Bondieu, Jean-Luc Domblides
  • Vapor phase chemical infiltration process of a material into a porous substrate at controlled surface temperature
    Patent number: 5652030
    Abstract: The substrate (10) is placed in an enclosure (12) and is heated so as to establish therein a temperature gradient such that the substrate has a higher temperature in portions that are remote from its exposed surfaces than at its exposed surfaces. A reaction gas constituting a precursor for the material to be infiltrated is admitted into the enclosure, with formation of the material being enhanced in those portions of the substrate that are at higher temperature. At the beginning of the infiltration process, and at least during the major portion thereof, substrate heating is controlled in such a manner as to maintain the temperature of its exposed surfaces at a value that is no greater than the minimum temperature for the reaction gas to deposit the material that is to be infiltrated, while portions of the substrate that are remote from its exposed surfaces are at a temperature that is greater than the minimum temperature for deposition.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: July 29, 1997
    Assignee: Societe Europeenne de Propulsion
    Inventors: Bernard Delperier, Christian Robin-Brosse, Jean-Luc Domblides, Gilles Bondieu