Patents by Inventor Timothy S. Westby

Timothy S. Westby 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).

  • Coal blends having improved ash viscosity
    Patent number: 5364421
    Abstract: Coal blends suitable for combustion in a slagging-type combustion apparatus comprise blends of (1) a bituminous coal which forms ash slag having unacceptably high viscosity with (2) a lignitic coal which forms ash slag having marginal viscosity characteristics or T.sub.cv whereupon combustion of the blends results in formation of ash slag having viscosity which is synergistically lowered and acceptable for slagging.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: November 15, 1994
    Assignee: Ziegler Coal Holding Company
    Inventors: Timothy S. Westby, Thomas G. McCord, Lynton W. R. Dicks
  • In-situ coal drying
    Patent number: 4793656
    Abstract: A method for upgrading coal in-situ is disclosed in which a treatment zone is established around an energy source placed in a cavity within a coal seam and the pore structure of the coal substantially irreversibly collapses as moisture is driven off. The energy source provides either evaporative energy such as heat or a combination of heat and pressure in-situ. Resorption of water returning to the treatment zone during cooling of the coal prior to mining is limited due to the pore collapse.
    Type: Grant
    Filed: February 12, 1987
    Date of Patent: December 27, 1988
    Assignee: Shell Mining Company
    Inventors: Mark A. Siddoway, Timothy S. Westby