Patents by Inventor Hai T. Pham

Hai T. Pham 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).

  • Calibration of sensors
    Patent number: 6758080
    Abstract: A plurality of seismic sensors calibration method (100) includes: an assembling so that sensors are coupled with each sensor positioned with its axis of sensitivity in a different spatial direction calibration system step (105), a rotating sensors step (110), a measuring sensors output signals step (115), a sensor output signal processing step (120) and a storing calibration coefficient(s) step (125).
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: July 6, 2004
    Assignee: Input/Output, Inc.
    Inventors: Glen Ragan, David Wilson, Jeffrey C. Gannon, Hai T. Pham