Patents by Inventor Douglas E. Jeffers

Douglas E. Jeffers 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).

  • Laser alignment system for well equipment
    Patent number: 5084980
    Abstract: A laser beam is used to align instruments, directional core barrel assemblies or other directional equipment before the assemblies are run into wells. A low power laser and special means for clamping the laser and a target to the members of the assembly are employed.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: February 4, 1992
    Assignees: Oryx Energy Co., Diamant Boart Stratabit
    Inventors: Robert A. Skopec, Douglas E. Jeffers, Freddy W. Hagins