Patents by Inventor Richard W. Hanks

Richard W. Hanks 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).

  • Pipeline transportation of coarse coal-liquid carbon dioxide slurry
    Patent number: 4721420
    Abstract: A method and composition are provided for transporting coarse particles of coal in a dense liquid CO.sub.2 media. The dense media contains fine particles of densifying material such as coal or magnetite which form a suspension in the liquid CO.sub.2. The suspension is capable of supporting large particles of coal for transportation in a liquid CO.sub.2 slurry pipeline. Use of the dense media allows the pumping of the coarse coal particles at slower velocities than if the fine densifying particles were not present.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: January 26, 1988
    Assignee: Arthur D. Little, Inc.
    Inventors: Chakra J. Santhanam, Richard W. Hanks, R. Peter Stickles