Patents Represented by Attorney Richards D. Jordan

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  • Composition for reducing in-tank fuel pump copper commutator wear and method
    Patent number: 5336277
    Abstract: The resistance of in-tank fuel pump copper commutators to become excessively worn by exposure to petroleum fuels containing at least 10 mg/liter of elemental sulfur is substantially increased by the addition of at least about 5 mg/liter of an organomercaptan, compound and at least about 25 mg/liter of a copper metal deactivator capable of forming a sulfur - resistant barrier coating on the copper commutator, to produce a novel fuel composition.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: August 9, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventors: Marc A. Poirier, Robert J. Falkiner
  • Hydroconversion process for a carbonaceous material
    Patent number: 5332489
    Abstract: This invention relates to a process for converting a carbonaceous material to a liquid product using a hydrogen donor solvent. More specifically, this invention relates to a process for hydroconverting carbonaceous material in which a 400.degree.-1000.degree. F. hydroconversion product fraction is further hydrocracked and a hydrocracked fraction is used as the hydrogen donor solvent. An increased quantity of liquid product is achieved by removing an ash residuum from the hydroconversion product fraction prior to the hydrocracking process.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: July 26, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: Lavanga R. Veluswamy