Patents by Inventor H. Bernie Luft

H. Bernie Luft 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).

  • Insulated and/or concentric coiled tubing
    Patent number: 6015015
    Abstract: A coiled tubing composite comprising insulated coiled tubing, concentric coiled tubing and insulated concentric coil tubing, including structure with centralizers and providing an annulus for insulation. The invention includes a method for assembling concentric coiled tubing, with insulation, and apparatus in combination with the insulated coiled tubing composite for heat assisted production of hydrocarbons and minerals from a wellbore.
    Type: Grant
    Filed: January 27, 1997
    Date of Patent: January 18, 2000
    Assignees: BJ Services Company U.S.A., Nowsco Well Service Ltd.
    Inventors: H. Bernie Luft, Graham Wilde, Peter J. Pelensky