TREA

Christian Douris

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  • Maringues, FR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process of coating an extruder screw
    • Patent number 6,346,293
    • Issue date Feb 12, 2002
    • Compagnie Generale des Etablissements Michelin - Michelin & Cie
    • Christian Douris
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Extruder screw with coatings of different hardnesses thereon
    • Patent number 6,155,705
    • Issue date Dec 5, 2000
    • Compagnie Generale des Etablissements Michelin - Michelin & Cie
    • Christian Douris
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL