Patents by Inventor Lee C. Fearon

Lee C. Fearon 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).

  • Method for removing contaminants from soil
    Patent number: 5340406
    Abstract: A method and apparatus for removing contaminants from soil by a closed-loop, counter-current extraction process is disclosed. The process involves a preliminary water removal step, followed by a counter-current leaching of the contaminants from the soil by an extraction solvent in one or more extraction vessels. The extraction solvent is preferably 2-methyl-2-propanol and is continuously recycled.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: August 23, 1994
    Inventor: Lee C. Fearon