Patents by Inventor Clarence D. Edmonson

Clarence D. Edmonson 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).

  • Coring tool
    Patent number: 6009960
    Abstract: A coring assembly comprising a body securable at its upper end to a mandrel add at its lower end to a core catcher housing, a ball sleeve slidably disposed about said mandrel and moveable between a first and a second position, a ball closure valve disposed in said body and moveable with said mandrel between the first and second position, the combination operable to remotely cut and collect a loosely consolidated core sample.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: January 4, 2000
    Assignee: Diamond Products International, Inc.
    Inventors: Curtis E. Leitko, Jr., Clarence D. Edmonson, Gary W. Clemens, Terry P. Clifton