Patents by Inventor Deborah H. Dobson

Deborah H. Dobson 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).

  • Apparatus for pigging hydrocarbon product flowlines
    Patent number: 4574830
    Abstract: A method and apparatus for cleaning debris from the interior surfaces of two flowlines, particularly dissimilar sized flowlines, utilizes a crossover flowline, crossover valve, and two bypass flowlines and bypass valves, wherein the bypass flowlines communicate between a respective flowline and the crossover flowline.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: March 11, 1986
    Assignee: Exxon Production Research Co.
    Inventors: Wynn P. Rickey, Deborah H. Dobson, Roger W. Huffaker
  • Method for pigging hydrocarbon product flowlines
    Patent number: 4528041
    Abstract: A method and apparatus for cleaning debris from the interior surfaces of two flowlines, particularly dissimilar sized flowlines, utilizes a crossover flowline, crossover valve, and two bypass flowlines and bypass valves, wherein the bypass flowlines communicate between a respective flowline and the crossover flowline.
    Type: Grant
    Filed: March 7, 1984
    Date of Patent: July 9, 1985
    Assignee: Exxon Production Research Co.
    Inventors: Wynn P. Rickey, Deborah H. Dobson, Roger W. Huffaker