Patents by Inventor Gregg J. Howsmon

Gregg J. Howsmon 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).

  • Patent number: 6090859
    Abstract: Small particle size catalysts having an average particle size of less than 20 or 10 microns, which agglomerate when contacted with a hydrocarbon liquid, are easily dispersed in the hydrocarbon liquid by first forming a mixture comprising the catalyst particles and one or more non-acidic, liquid polar oxygenates, such as an alcohol, ketone, ester, ether or mixture thereof. The mixture is contacted with the hydrocarbon liquid in which the particles then readily disperse. This process is useful for adding fresh or regenerated small particle size catalyst to catalytic hydroprocessing process slurries, including a reactive Fischer-Tropsch hydrocarbon synthesis slurry. One to four carbon atom alcohols are preferred oxygenates for use with a Fischer-Tropsch slurry.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: July 18, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Gregg J. Howsmon, Robert J. Wittenbrink, Claude C. Culross, Louis F. Burns
  • Patent number: 5977192
    Abstract: Small particle size catalysts having an average particle size of less than 20 or 10 microns, which agglomerate when contacted with a hydrocarbon liquid, are easily dispersed in the hydrocarbon liquid by first forming a mixture comprising the catalyst particles and one or more non-acidic, liquid polar oxygenates, such as an alcohol, ketone, ester, ether or mixture thereof. The mixture is contacted with the hydrocarbon liquid in which the particles then readily disperse. This process is useful for adding fresh or regenerated small particle size catalyst to catalytic hydroprocessing process slurries, including a reactive Fischer-Tropsch hydrocarbon synthesis slurry. One to four carbon atom alcohols are preferred oxygenates for use with a Fischer-Tropsch slurry.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: November 2, 1999
    Assignee: Exxon Research and Engineering Co.
    Inventors: Gregg J. Howsmon, Robert J. Wittenbrink, Claude C. Culross, Louis F. Burns