Patents by Inventor Alexander W. Hyndman

Alexander W. Hyndman 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).

  • Purification process for bitumen froth
    Patent number: 4859317
    Abstract: Bitumen froth is treated in a circuit comprising a plurality of serially connected mixer and inclined plate settler units. A light hydrocarbon diluent moves countercurrently through the circuit. Thus, as the bitumen content of the stream being settled diminishes, the concentration of diluent in that stream increases.
    Type: Grant
    Filed: February 1, 1988
    Date of Patent: August 22, 1989
    Inventors: William E. Shelfantook, Alexander W. Hyndman, Larry P. Hackman