Patents by Inventor Olivier Negro

Olivier Negro 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).

  • Device for shaping plastic objects under inert atmosphere
    Patent number: 7147460
    Abstract: The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening O allowing the gas to be ejected at right angles to its direction of flow in the pipe.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: December 12, 2006
    Assignee: L'Air Liquide, Societe Anonyme A Directoire et Conseil de Surveillance pour l'Etude et, l'Exploitation des Procedes Georges Claude
    Inventors: Olivier Negro, Sami Dick, Marc Leturmy, Stéphane Melen
  • Device for shaping plastic objects under inert atmosphere
    Publication number: 20040005379
    Abstract: The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening o allowing the gas to be ejected at right angles to its direction of flow in the pipe.
    Type: Application
    Filed: July 14, 2003
    Publication date: January 8, 2004
    Inventors: Olivier Negro, Sami Dick, Marc Leturmy, Stephane Melen