Patents by Inventor Steven E. Trumbull

Steven E. Trumbull 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).

  • Regeneration of ionic liquid catalyst using a metal in the absence of added hydrogen
    Patent number: 7674739
    Abstract: A process for regenerating a used acidic ionic liquid catalyst comprising contacting the used ionic liquid catalyst with at least one metal in a regeneration zone in the absence of added hydrogen under regeneration conditions for a time sufficient to increase the activity of the ionic liquid catalyst is described. In one embodiment, regeneration is conducted in the presence of a hydrocarbon solvent.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: March 9, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventors: Saleh Elomari, Thomas V. Harris, Hye Kyung C. Timken, Steven E. Trumbull
  • Apparatus for hydrocarbon processing
    Patent number: 6548030
    Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.
    Type: Grant
    Filed: September 10, 2001
    Date of Patent: April 15, 2003
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, Gale L. Hubred, Steven C. Moore, Paul F. Bryan, Robert L. Hise, Steven E. Trumbull, Randall J. Harris
  • Apparatus for hydrocarbon processing
    Publication number: 20020179495
    Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.
    Type: Application
    Filed: September 10, 2001
    Publication date: December 5, 2002
    Inventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, Gale L. Hubred, Steven C. Moore, Paul F. Bryan, Robert L. Hise, Steven E. Trumbull, Randall J. Harris
  • Low-sulfur reforming process
    Patent number: 5863418
    Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.
    Type: Grant
    Filed: February 9, 1996
    Date of Patent: January 26, 1999
    Assignee: Chevron Chemical Company
    Inventors: John V. Heyse, Bernard F. Mulaskey, Robert A. Innes, Daniel P. Hagewiesche, Gale L. Hubred, Steven C. Moore, Paul F. Bryan, Robert L. Hise, Steven E. Trumbull, Randall J. Harris, Alan G. Kunze
  • Method for increasing carburization resistance
    Patent number: 5676821
    Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 14, 1997
    Assignee: Chevron Chemical Company
    Inventors: John V. Heyse, Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull
  • Low sufur reforming process
    Patent number: 5674376
    Abstract: Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system of improved resistance to carburization and metal dusting under conditions of low sulfur.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 7, 1997
    Assignee: Chevron Chemical Company
    Inventors: John V. Heyse, Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull
  • Pretreatment method for increasing conversion of reforming catalyst
    Patent number: 5620937
    Abstract: A pretreatment process is disclosed for increasing conversion and reducing the fouling rate of reforming catalysts wherein the catalyst is pretreated at a temperature from 1025.degree. F. to 1275.degree. F. in a reducing atmosphere prior to contacting the catalyst with a hydrocarbon feed in the presence of hydrogen.
    Type: Grant
    Filed: December 14, 1994
    Date of Patent: April 15, 1997
    Assignee: Chevron Chemical Company
    Inventors: Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull, William J. Cannella, Robert A. Innes
  • Cracking processes
    Patent number: 5575902
    Abstract: Methods for cracking hydrocarbons in reactor systems having improved resistances to carburization and coking. The reactor system comprises a steel portion having provided thereon a Group VIB metal protective layer to isolate the steel portion from hydrocarbons, applied to a thickness effective for completely isolating the steel portion from the hydrocarbon environment. The protective layer is anchored to the steel substrate through an intermediate carbide-rich, bonding layer.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: November 19, 1996
    Assignee: Chevron Chemical Company
    Inventors: John V. Heyse, Alan G. Kunze, Steven E. Trumbull
  • Pretreatment method for increasing conversion of reforming catalyst
    Patent number: 5382353
    Abstract: A pretreatment process is disclosed for increasing conversion and reducing the fouling rate of reforming catalysts wherein the catalyst is pretreated at a temperature from 1025.degree. F. to 1275.degree. F. in a reducing atmosphere prior to contacting the catalyst with a hydrocarbon feed in the presence of hydrogen.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: January 17, 1995
    Assignee: Chevron Research & Technology Co., a Div. of Chevron U.S.A. Inc.
    Inventors: Bernard F. Mulaskey, Robert L. Hise, Steven E. Trumbull, William J. Cannella, Robert A. Innes