Patents by Inventor Stephen C. Jevne

Stephen C. Jevne 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: 7348291
    Abstract: A catalyst comprising a complex of catalytic oxides comprising potassium, cesium, cerium, chromium, cobalt, nickel, iron, bismuth, molybdenum, wherein the relative ratios of these elements is represented by the following general formula AaKbCscCedCreCofNigXhFeiBijMo12Ox wherein A is Rb, Na, Li, Tl, or mixtures thereof, X is P, Sb, Te, B, Ge, W, Ca, Mg, a rare earth element, or mixtures thereof, a is 0 to about 1, b is about 0.01 to about 1, c is about 0.01 to about 1, d is about 0.01 to about 3, e is about 0.01 to about 2, f is about 0.01 to about 10, g is about 0.1 to about 10, h is 0 to about 4, i is about 0.1 to about 4, j is about 0.05 to about 4, x is a number determined by the valence requirements of the other elements present, and wherein the catalyst is substantially free of manganese and zinc.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: March 25, 2008
    Assignee: Ineos USA LLC
    Inventors: Christos Paparizos, Stephen C. Jevne, Michael J. Seely
  • Patent number: 7071140
    Abstract: A catalyst comprising a complex of catalytic oxides comprising rubidium, cerium, chromium, iron, bismuth, molybdenum, and at least one of nickel or nickel and cobalt, optionally magnesium, and optionally one of phosphorus, antimony, tellurium, sodium, lithium, potassium, cesium, thallium, boron, germanium, tungsten calcium, wherein the relative ratios of these elements are represented by the following general formula: RbaCebCrcMgdAeFefBigYhMo12Ox wherein A is Ni or the combination of Ni and Co, Y is at least one of P, Sb, Te, Li, Na, K, Cs, Tl, B, Ge, W, Ca, Zn, a rare earth element, or mixtures thereof, a is about 0.01 to about 1, b is about 0.01 to about 3, c is about 0.01 to about 2, d is 0 to about 7, e is about 0.01 to about 10, f is about 0.01 to about 4, g is about 0.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: July 4, 2006
    Assignee: The Standard Oil Company
    Inventors: Christos Paparizos, Stephen C. Jevne, Michael J. Seely
  • Patent number: 6939998
    Abstract: Alkylation of metaxylene with isobutylene using a solid active clay catalyst produces 5-tert-butyl-metaxylene with high isomer selectivity with respect to 4-tert-butyl-metaxylene. The process is controlled to extend catalyst life and significantly reduce environmentally unfriendly waste.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: September 6, 2005
    Assignee: The University of Southern Mississippi Research Foundation
    Inventors: Larry C. Satek, Stephen C. Jevne, Surjit S. Chhatwal
  • Publication number: 20040152934
    Abstract: Alkylation of metaxylene with isobutylene using a solid active clay catalyst produces 5-tert-butyl-metaxylene with high isomer selectivity with respect to 4-tert-butyl-metaxylene. The process is controlled to extend catalyst life and significantly reduce environmentally unfriendly waste.
    Type: Application
    Filed: September 8, 2003
    Publication date: August 5, 2004
    Inventors: Larry C. Satek, Stephen C. Jevne, Surjit S. Chhatwal
  • Publication number: 20040110978
    Abstract: A catalyst comprising a complex of catalytic oxides comprising potassium, cesium, cerium, chromium, cobalt, nickel, iron, bismuth, molybdenum, wherein the relative ratios of these elements is represented by the following general formula
    Type: Application
    Filed: November 19, 2003
    Publication date: June 10, 2004
    Inventors: Christos Paparizos, Stephen C. Jevne, Michael J. Seely
  • Publication number: 20040106817
    Abstract: A catalyst comprising a complex of catalytic oxides comprising rubidium, cerium, chromium, iron, bismuth, molybdenum, and at least one of nickel or nickel and cobalt, optionally magnesium, and optionally one of phosphorus, antimony, tellurium, sodium, lithium, potassium, cesium, thallium, boron, germanium, tungsten calcium, wherein the relative ratios of these elements are represented by the following general formula:
    Type: Application
    Filed: November 18, 2003
    Publication date: June 3, 2004
    Inventors: Christos Paparizos, Stephen C. Jevne, Michael J. Seely