Patents by Inventor Paul Spriggs

Paul Spriggs 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).

  • Measurements of properties and transmission of measurements in subterranean wells
    Patent number: 6644110
    Abstract: A system of measuring properties, such as pressure, and transmitting measurements in a subterranean well. In a described example, a valve system includes a valve having a closure member. A sensor senses a pressure differential across the closure member. A tool positioned in the valve transmits power to the valve to operate the sensor, and the sensed pressure differential is transmitted from the valve to the tool.
    Type: Grant
    Filed: September 16, 2002
    Date of Patent: November 11, 2003
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Fredrick D. Curtis, Paul Spriggs, Vimal V. Shah