Patents by Inventor Eugene D. Bednard

Eugene D. Bednard 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).

  • Current impulse method and apparatus for testing geophone strings
    Patent number: 4392213
    Abstract: A method and apparatus for testing geophones to measure the response of the geophones and associated circuits and obtain a signal that can be used to deconvolve recorded seismic data. The method comprises applying a constant voltage or current to the geophones, removing the voltage or current and measuring the geophone response. The second derivative of the response is the time equivalent of the velocity response of the geophone and can be used in deconvolving recorded seismic data.
    Type: Grant
    Filed: July 11, 1980
    Date of Patent: July 5, 1983
    Assignee: Shell Oil Company
    Inventors: Edward J. Kung, Eugene D. Bednard