Patents by Inventor William Edward Shelfantook

William Edward Shelfantook 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).

  • Solvent process for bitumen seperation from oil sands froth
    Patent number: 6214213
    Abstract: A paraffinic solvent is mixed with bitumen froth containing water and solids. Sufficient solvent is added to induce inversion when the mixture is subjected to gravity or centrifugal forces. The emulsion reports to the water phase and a dry bitumen product virtually free of inorganic solids, is obtained.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: April 10, 2001
    Assignees: AEC Oil Sands, L.P., AEC Oil Sands Limited Partnership, Athabasca Oil Sands Investments Inc., Canadian Occidental Petroleum Ltd., Canadian Oil Sands Investments Inc., Gulf Canada Resources Limited, Imperial Oil Resources, Mocal Energy Limited, Murphy Oil Company Ltd., Petro-Canada
    Inventors: Robert Tipman, Yi-Cheng Long, William Edward Shelfantook