Patents by Inventor Daniel R. Neskora

Daniel R. Neskora 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).

  • Slurry hydrocarbon synthesis process with increased catalyst life
    Patent number: 6284807
    Abstract: A slurry catalytic hydrocarbon synthesis process which employs a catalyst comprising a supported cobalt component achieves a short term catalyst half life of more than 10 days, by using a syngas feed which contains less than fifty parts per billion of a combined total amount of HCN and NH3.
    Type: Grant
    Filed: August 14, 1998
    Date of Patent: September 4, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Stephen C. Leviness, Charles J. Mart, William C. Behrmann, Stephen J. Hsia, Daniel R. Neskora
  • Liquefaction of carbonous materials with vapor phase hydrogen donor solvents
    Patent number: 4385981
    Abstract: Disclosed is a method for enhancing the conversion of carbonous materials, such as coal and oil shale. The method comprises converting the carbonous material in the presence of a vapor phase hydrogen donor material containing 1 or more hydrogen donor solvents wherein each donor material is characterized by: (a) a heterocyclic ring in which the heteroatom is nitrogen, (b) having at least one donatable hydrogen located on the heterocyclic ring, and (c) becoming more unsaturated and/or aromatic upon the loss of the donatable hydrogen(s). The conversion is performed at substantially atmospheric pressure, at an effective vapor residence time and at a temperature from about the boiling point of the hydrogen donor material to about 550.degree. C.
    Type: Grant
    Filed: April 20, 1981
    Date of Patent: May 31, 1983
    Assignee: Exxon Research and Engineering Co.
    Inventors: Daniel R. Neskora, Richard H. Schlosberg