Patents by Inventor Stuart BUTLER

Stuart BUTLER 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).

  • Back pressure control system
    Patent number: 10000981
    Abstract: A back pressure control system adapted to be at least partially integrated with a drill rig.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: June 19, 2018
    Assignee: CANRIG DRILLING TECHNOLOGIES LTD.
    Inventors: Darcy Nott, Stuart Butler, Dean Rambo
  • BACK PRESSURE CONTROL SYSTEM
    Publication number: 20150267490
    Abstract: A back pressure control system adapted to be at least partially integrated with a drill rig.
    Type: Application
    Filed: March 17, 2015
    Publication date: September 24, 2015
    Inventors: Darcy NOTT, Stuart BUTLER, Dean RAMBO