Patents by Inventor John C. Roarty

John C. Roarty 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).

  • Catalyst drying and activation methods
    Patent number: 4717700
    Abstract: A zeolite-based catalyst containing a metal oxide or oxide complex is dried by heating while in contact with the gas. Heat input to the catalyst and hence the rate of catalyst temperature increase are controlled so as to limit the rate of water evolution from the catalyst and the water vapor concentration in the gas, thereby to maintain the metal oxide or complex in dispersed form within the pores of the zeolite.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: January 5, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Ramdas Venkatram, John C. Roarty, Theodorus M. Wortel, James L. Carter
  • Reforming process for enhanced benzene yield
    Patent number: 4594145
    Abstract: A process for reforming a full boiling range naptha feed to enhance benzene yield is disclosed which first separates the feed into a C.sub.6 fraction containing at least 10% by volume of C.sub.7 + hydrocarbons and a C.sub.7 + fraction, then subjecting the C.sub.6 fraction to a catalytic aromatization process and subjecting the C.sub.7 + fraction to a catalytic reforming process, followed by recovering the aromatics produced.
    Type: Grant
    Filed: December 7, 1984
    Date of Patent: June 10, 1986
    Assignee: Exxon Research & Engineering Co.
    Inventor: John C. Roarty
  • Benzene recovery process
    Patent number: 4431521
    Abstract: A process is disclosed for improving the recovery of benzene from a reforming process by adding to the reformer effluent a heavy oil, then recovering the benzene in a flash drum.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: February 14, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: John C. Roarty, Malcolm L. Campbell
  • Reforming process for enhanced benzene yield
    Patent number: RE33323
    Abstract: A process for reforming a full boiling range naptha feed to enhance benzene yield is disclosed which first separates the feed into a .[.C.sub.6 .]. .Iadd.lighter .Iaddend.fraction .[.containing at least 10% by volume of C.sub.7+ hydrocarbons.]. .Iadd., comprising at least one member selected from the group consisting of C.sub.6, C.sub.7, and C.sub.8 hydrocarbons, .Iaddend.and a .[.C.sub.7 +.]. .Iadd.heavier .Iaddend.fraction, then subjecting the .[.C.sub.6 .]. .Iadd.lighter .Iaddend.fraction to a catalytic aromatization process .[.and subjecting the C.sub.7 + fraction to a catalytic reforming process, followed by recovering the aromatics produced.]..Iadd.in the presence of a non-acidic catalyst.Iaddend..
    Type: Grant
    Filed: June 10, 1988
    Date of Patent: September 4, 1990
    Assignee: Exxon Research & Engineering Company
    Inventors: John C. Roarty, Murray Nadler