Patents by Inventor Stephen L. Lawton

Stephen L. Lawton 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: 6419891
    Abstract: This invention relates to a new synthetic crystalline material comprising acidic surface silanol groups, designated MCM-69, a method for its preparation and use thereof in catalytic conversion of organic compounds.
    Type: Grant
    Filed: October 18, 1999
    Date of Patent: July 16, 2002
    Assignee: ExxonMobil Oil Corporation
    Inventors: Carrie L. Kennedy, Gordon J. Kennedy, Stephen L. Lawton, Louis D. Rollmann, John L. Schlenker
  • Patent number: 5557024
    Abstract: Relatively short chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a relatively short chain alkylating agent under sufficient reaction conditions in the presence of a catalyst comprising zeolite MCM-56. The liquid phase syntheses of ethylbenzene and cumene are particular examples of such MCM-56 catalyzed reactions.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: September 17, 1996
    Assignee: Mobil Oil Corporation
    Inventors: Jane C. Cheng, Anthony D. Fung, Donald J. Klocke, Stephen L. Lawton, Daria N. Lissy, Wieslaw J. Roth, C. Morris Smith, Dennis E. Walsh
  • Patent number: 5536894
    Abstract: This invention relates to use of synthetic layered material MCM-56 as a sorbent and as a catalyst component in catalytic conversion of organic compounds. Examples of sorbent use include rapid sorption of hydrocarbons and separating at least one hydrocarbon component from a mixture of hydrocarbon components having differential sorption characteristics with respect to MCM-56. Examples of catalytic use include acid catalyzed reactions, such as cracking, aromatic compound alkylation, and isoalkane alkylation.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: July 16, 1996
    Assignee: Mobil Oil Corporation
    Inventors: Thomas F. Degnan, Anthony S. Fung, Terry E. Helton, Stephen L. Lawton, Daria N. Lissy, Wieslaw J. Roth
  • Patent number: 5453554
    Abstract: Relatively short chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a relatively short chain alkylating agent under sufficient reaction conditions in the presence of a catalyst comprising zeolite MCM-56. The liquid phase syntheses of ethylbenzene and cumene are particular examples of such MCM-56 catalyzed reactions.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: September 26, 1995
    Assignee: Mobil Oil Corp.
    Inventors: Jane C. Cheng, Anthony S. Fung, Donald J. Klocke, Stephen L. Lawton, Daria N. Lissy, Wieslaw J. Roth, C. Morris Smith, Dennis E. Walsh
  • Patent number: 5371310
    Abstract: Relatively short chain alkyl aromatic compounds are prepared by alkylating or transalkylating an alkylatable aromatic compound with a relatively short chain alkylating or transalkylating agent under sufficient reaction conditions in the presence of catalyst comprising zeolite MCM-49.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: December 6, 1994
    Assignee: Mobil Oil Corp.
    Inventors: J. Michael Bennett, Clarence D. Chang, Jane C. Cheng, Stephen L. Lawton, Michael E. Leonowicz, Daria N. Lissy, Mae K. Rubin, C. Morris Smith, Dennis E. Walsh
  • Patent number: 5362697
    Abstract: This invention relates to a new synthetic layered material, a method for its preparation and use thereof as a sorbent and as a catalyst component in catalytic conversion of organic compounds.
    Type: Grant
    Filed: April 26, 1993
    Date of Patent: November 8, 1994
    Assignee: Mobil Oil Corp.
    Inventors: Anthony S. Fung, Stephen L. Lawton, Wieslaw J. Roth
  • Patent number: 5236575
    Abstract: This invention relates to a new synthetic porous crystalline material, a method for its preparation and use thereof in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern.
    Type: Grant
    Filed: December 6, 1991
    Date of Patent: August 17, 1993
    Assignee: Mobil Oil Corp.
    Inventors: J. Michael Bennett, Clarence D. Chang, Stephen L. Lawton, Michael E. Leonowicz, Daria N. Lissy, Mae K. Rubin