Patents by Inventor David Graham King

David Graham King 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).

  • Amplitude preserving prestack migration method
    Patent number: 7167414
    Abstract: A method is disclosed for amplitude preserving Kirchhoff time migration. The method includes calculating estimates of the geometrical spreading terms using a constant velocity approximation. Takeoff and emergence angles are accurately calculated based on a model of velocity which varies with respect to travel time. An image can be calculated at at least one travel time using the estimated weights and calculated takeoff and emergence angles.
    Type: Grant
    Filed: October 4, 2004
    Date of Patent: January 23, 2007
    Assignee: PGS Americas, Inc.
    Inventors: Seongbok Lee, David Graham King