Patents by Inventor Robert W. Rochon

Robert W. Rochon 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).

  • Bell nipple densitometer method and apparatus
    Patent number: 4408486
    Abstract: A method and apparatus for continuously determining the amount of entrained gasses and drilling fluid before the entrained gas is released to the atmosphere whereby differential pressures at vertically spaced locations in a bell nipple are monitored to determine changes in the weight of drilling fluid due to entrained gasses.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: October 11, 1983
    Assignee: Monarch Logging Company, Inc.
    Inventors: Robert W. Rochon, Joe W. Sneed, Jr.