Patents by Inventor David N. Folsom

David N. Folsom 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).

  • Metal coiled tubing with signal transmitting passageway
    Patent number: 5542472
    Abstract: A combination of a metal coiled tubing and a signal transmitting passageway for transmitting and/or receiving signals to well tools positioned in the coiled tubing. The signal transmitting passageway is positioned in the wall of the coiled tubing and may transmit and receive hydraulic, electrical or light signals and the signals may be used for transmitting power signals for actuating well tools, control signals for controlling well tools, and/or data signals for transmitting or receiving information.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: August 6, 1996
    Assignee: Camco International, Inc.
    Inventors: Ronald E. Pringle, Winfield M. Sides, III, David N. Folsom, Cecil G. McGavern, III