Patents by Inventor Nathalie Duret

Nathalie Duret 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).

  • Method of manufacturing a sandwich panel, made of composite material, and a panel thereby obtained
    Publication number: 20040146687
    Abstract: In order to manufacture a sandwich panel using the RTM technique, a stack comprising a core (10) with open cells, a film (12) of intumescent material covering each of the faces of the core (10), a dry barrier fabric (14) covering each of the films (12) and an overlay of dry fibers (16) covering each of the barrier fabrics is placed in a mold. During polymerization of the films (12), pressurization of the mold and the presence of the barrier fabrics (14) prevent penetration of the foam into the overlays (16). The resin is then injected into the mold and then polymerized, without danger of penetration into the cells of the core (10).
    Type: Application
    Filed: January 16, 2004
    Publication date: July 29, 2004
    Inventors: Alain Fournier, Nathalie Duret
  • Method of manufacturing a sandwich panel, made of composite material, and a panel thereby obtained
    Patent number: 6679969
    Abstract: In order to manufacture a sandwich panel using the RTM technique, a stack comprising a core (10) with open cells, a film (12) of intumescent material covering each of the faces of the core (10), a dry barrier fabric (14) covering each of the films (12) and an overlay of dry fibers (16) covering each of the barrier fabrics is placed in a mold. During polymerization of the films (12), pressurization of the mold and the presence of the barrier fabrics (14) prevent penetration of the foam into the overlays (16). The resin is then injected into the mold and then polymerized, without danger of penetration into the cells of the core (10).
    Type: Grant
    Filed: August 22, 2000
    Date of Patent: January 20, 2004
    Assignee: Aerospatiale Matra Airbus
    Inventors: Alain Fournier, Nathalie Duret