Patents by Inventor Stephen J. Wachtel

Stephen J. Wachtel 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).

  • Catalytic reactor-fractionator apparatus
    Patent number: 4133644
    Abstract: A method for producing a hydrocarbon material having a reduced nitrogen content involves contacting a nitrogen-containing hydrocarbon feedstock, e.g., crude shale oil, shale oil derived gas oil, mixtures thereof and the like, in at least one reaction zone with a catalyst to polymerize at least a portion of the contained nitrogen compounds, e.g., refractory high boiling nitrogen-containing compounds, and, thereafter, separating, e.g., flashing, the resulting reactor effluent to produce a hydrocarbon material having a reduced nitrogen content relative to the feedstock and effluent. This hydrocarbon material may be advantageously used in hydrocarbon hydrotreating.
    Type: Grant
    Filed: January 25, 1977
    Date of Patent: January 9, 1979
    Assignee: Atlantic Richfield Company
    Inventors: Richard L. Holloway, Robert R. Edison, Stephen J. Wachtel
  • Reduced nitrogen content of hydrocarbon fraction by catalytic polymerization
    Patent number: 4033861
    Abstract: A method for producing a hydrocarbon material having a reduced nitrogen content involves contacting a nitrogen-containing hydrocarbon feedstock, e.g., crude shale oil, shale oil derived gas oil, mixtures thereof and the like, in at least one reaction zone with a catalyst to polymerize at least a portion of the contained nitrogen compounds, e.g., refractory high boiling nitrogen-containing compounds, and, thereafter, separating, e.g., flashing, the resulting reactor effluent to produce a hydrocarbon material having a reduced nitrogen content relative to the feedstock and effluent. This hydrocarbon material may be advantageously used in hydrocarbon hydrotreating. Also provided is a novel apparatus which can be used to carry out the method of the present invention.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: July 5, 1977
    Assignee: Atlantic Richfield Company
    Inventors: Richard L. Holloway, Robert R. Edison, Stephen J. Wachtel