TREA

John Helvik

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  • Stavanger, NO
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Patents Grantslast 30 patents

  • Information Patent Grant

    Plug with expandable packer element
    • Patent number 8,042,574
    • Issue date Oct 25, 2011
    • TDW Offshore Services AS
    • Jone Mellemstrand
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Packer with Ribs
    • Publication number 20100307737
    • Publication date Dec 9, 2010
    • Jone Mellemstrand
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    PLUG WITH EXPANDABLE PACKER ELEMENT
    • Publication number 20100032044
    • Publication date Feb 11, 2010
    • Jone Mellemstrand
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...