Patents by Inventor David B. Cist

David B. Cist 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).

  • Patent number: 8957809
    Abstract: In an embodiment of the disclosed technology, a visual output of data from a ground-penetrating radar is displayed on a visual medium. The display has a first exhibition of output from a higher frequency range antenna, a second exhibition of output from a lower frequency range antenna (compared to the other antenna; see definition in the “detailed description”), and a transition area between the first and second exhibition having merged data from the lower frequency antenna and the higher frequency antenna. The depth range of the transition area may be varied based on optimal depth range of each antenna, such as manually by a viewer viewing the visual output, which may occur in real-time, that is, while operating the radar and viewing the visual output thereof. Or, the transition depth range and/or width of the transition region may be varied as part of post-processing.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: February 17, 2015
    Assignee: Geophysical Survey Systems, Inc.
    Inventor: David B. Cist
  • Patent number: 6940446
    Abstract: A method for inferring information about the conductivity of a medium from ground penetrating radar (GPR) data using a calculated effective penetration limit of the GPR system, including various methods for calculating the effective penetration limit.
    Type: Grant
    Filed: October 8, 2003
    Date of Patent: September 6, 2005
    Inventor: David B. Cist