Patents by Inventor David J. Bott

David J. Bott 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).

  • Heavy oil pretreatment process with reduced sulfur oxide emissions
    Patent number: 4980045
    Abstract: A process is provided for the pretreatment of heavy oil feeds to demetalate and remove coke precursors. Inert, sorbent material is utilized in a reaction zone to effect the contaminant removal and is cycled to a regeneration zone. The sorbent also adsorbs sulfur oxides produced in a regeneration zone which are then cycled back to the reaction zone, converted to hydrogen sulfide, and removed from the system. The preferred sorbent material is high surface area alumina, having an average surface area in the circulating inventory of greater than 100 m.sup.2 /g.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: December 25, 1990
    Assignee: Chevron Research Company
    Inventors: Ashok S. Krishna, David J. Bott, Theresa A. Pecoraro