Patents by Inventor Charles E. Peppard

Charles E. Peppard 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).

  • Injection/isolation tool
    Patent number: 6105670
    Abstract: A downhole tool is described which can be used for injection of waste fluids which have been separated from desired production fluids into a disposal formation. When desired, the conduit for the waste fluids to the disposal formation can be closed off, thereby isolating the disposal formation from the production zone and providing access selectively to the production zone.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: August 22, 2000
    Assignee: Kudu Industries Inc.
    Inventors: Robert G. Klos, Dale W. Peterson, Charles E. Peppard, Kim W. Kappler, David A. Hill, Colin A. Aldridge