Patents by Inventor Dennis Wilkison

Dennis Wilkison 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).

  • System using spread spectrum modulation for locating underground objects
    Patent number: 6211807
    Abstract: The location of underground objects such as pipes and conduits are located by detecting electrical signals emitted by the underground objects where the radiated signals include spread spectrum modulated RF signals. The system can operate in a passive or active mode, and in the active mode pseudo-noise (PN) generators can be employed or frequency-hopping can be employed. The use of spread spectrum minimizes or eliminates conflicting signals radiated from a plurality of underground objects and can improve signal to noise ratio of the detected signals.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: April 3, 2001
    Assignee: Geometrics
    Inventor: Dennis Wilkison