Patents by Inventor Daniel H. Barnhart

Daniel H. Barnhart 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).

  • Apparatus and method for soil decontamination
    Patent number: 4882021
    Abstract: Disclosed is an apparatus and method for relatively rapid, on-site soil decontamination in a confined area without significant toxic off-gassing. The disclosed method includes treating the contaminated soil with both a dry and wet chemical, mixing the chemically treated soil, and exposing the mixed soil to ultra violet light rays.
    Type: Grant
    Filed: January 15, 1988
    Date of Patent: November 21, 1989
    Inventor: Daniel H. Barnhart