Patents by Inventor Elmo C. Brown

Elmo C. Brown 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).

  • Combination process for the pretreatment and hydroconversion of heavy residual oils
    Patent number: 5320741
    Abstract: A novel method is disclosed for the hydroconversion of a heavy hydrocarbon feedstock wherein the feed is partially hydroconverted and demetalized in the presence of a catalytic additive and then the hydroconversion is completed in an ebullent bed reactor system.
    Type: Grant
    Filed: April 9, 1992
    Date of Patent: June 14, 1994
    Assignee: Stone & Webster Engineering Corporation
    Inventors: Axel R. Johnson, Elmo C. Brown