Patents by Inventor John Daniel Currie

John Daniel Currie 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).

  • Mercury recovery process
    Patent number: 5944196
    Abstract: A process and apparatus for the recovery of heavy metals from a heavy metal-contaminated material wherein the heavy metal, or particles containing the heavy metal, are separated from the material by a hydraulic mineral separator. The process and apparatus may be used, for example, in removing or recovering of mercury from a mercury-contaminated soil, caustic sludge, or similar material. The process provides a ready method for removal of mercury from mercury-contaminated materials or, more generally, heavy metals from heavy metal contaminated soils which process can allow recovery of the mercury or heavy metal for re-use. The apparatus allows for continuous operation of the mineral separator and automates various functions of the separator allowing for improved control of the process.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: August 31, 1999
    Assignee: Pioneer Licensing, Inc.
    Inventors: Peter Glen Oram, John Daniel Currie, Richard Masaichi Kenno, Nabil Elias Battikha