Patents by Inventor Thomas E. Skarada

Thomas E. Skarada 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).

  • Process for recovering hydrocarbons and heavy minerals from a tar sand hot water process waste stream
    Patent number: 3990885
    Abstract: A method for removing bitumen from mineral particles recovered from bituminous froth recovered as a product of aqueous extraction of tar sands which method comprises scrubbing the minerals with a liquid hydrocarbon solvent containing at least 10 weight percent aromatics and thereafter separating the minerals from the solvent and subsequently drying the minerals.
    Type: Grant
    Filed: September 10, 1974
    Date of Patent: November 9, 1976
    Assignee: Great Canadian Oil Sands Limited
    Inventors: Robert A. Baillie, Lawrence F. Schmoyer, Thomas E. Skarada