Patents by Inventor Gregory Robert Feegle

Gregory Robert Feegle 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).

  • Methods of extracting liquid hydrocardon contaminants from underground zones
    Patent number: 6413016
    Abstract: Methods of extracting liquid hydrocarbon contaminants from underground zones are provided. The methods are basically comprised of the steps of introducing a hot purge gas into an underground zone containing a pool of liquid hydrocarbon contaminants whereby light liquid hydrocarbons in and around the pool are evaporated and dense liquid hydrocarbons in the pool are evaporated to some extent, charred, auto-ignited and combusted, and removing the hot purge gas, the evaporated light liquid hydrocarbons and combustion gases from the combustion of the dense liquid hydrocarbons in the zone.
    Type: Grant
    Filed: August 17, 2000
    Date of Patent: July 2, 2002
    Assignee: Kerr-McGee Corporation
    Inventors: Stephen Richard Nelson, Gregory Robert Feegle