Patents by Inventor Lawrence E. Huff

Lawrence E. Huff 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).

  • Methods of removing a protective layer
    Patent number: 9347139
    Abstract: A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer with one or more chemical removal agents to remove at least a portion of the metal protective layer from the reactor component. A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer to remove the metal protective layer from the reactor component, and determining a thickness of the reactor component following treatment.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: May 24, 2016
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Dennis L. Holtermann, Tin-Tack Peter Cheung, Christopher D. Blessing, Lawrence E. Huff, Joseph Bergmeister, III, Robert L. Hise, Geoffrey E. Scanlon, David W. Dockter
  • Methods of Removing a Protective Layer
    Publication number: 20140007903
    Abstract: A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer with one or more chemical removal agents to remove at least a portion of the metal protective layer from the reactor component. A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer to remove the metal protective layer from the reactor component, and determining a thickness of the reactor component following treatment.
    Type: Application
    Filed: July 31, 2013
    Publication date: January 9, 2014
    Applicant: Chevron Phillips Chemical Company LP
    Inventors: Dennis L. HOLTERMANN, Tin-Tack Peter CHEUNG, Christopher D. BLESSING, Lawrence E. HUFF, Joseph BERGMEISTER, III, Robert L. HISE, Geoffrey E. SCANLON, David W. DOCKTER
  • Methods of removing a protective layer
    Patent number: 8535448
    Abstract: A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer with one or more chemical removal agents to remove at least a portion of the metal protective layer from the reactor component. A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer to remove the metal protective layer from the reactor component, and determining a thickness of the reactor component following treatment.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: September 17, 2013
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Dennis L. Holtermann, Tin-Tack Peter Cheung, Christopher D. Blessing, Lawrence E. Huff, Joseph Bergmeister, III, Robert L. Hise, Geoffrey E. Scanlon, David W. Dockter
  • Methods of Removing a Protective Layer
    Publication number: 20130014780
    Abstract: A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer with one or more chemical removal agents to remove at least a portion of the metal protective layer from the reactor component. A method of removing a metal protective layer from a surface of a reactor component comprising treating the metal protective layer to remove the metal protective layer from the reactor component, and determining a thickness of the reactor component following treatment.
    Type: Application
    Filed: July 11, 2011
    Publication date: January 17, 2013
    Applicant: CHEVRON PHILLIPS CHEMICAL COMPANY LP
    Inventors: Dennis L. HOLTERMANN, Tin-Tack Peter CHEUNG, Christopher D. BLESSING, Lawrence E. HUFF, Joseph BERGMEISTER, III, Robert L. HISE, Geoffrey E. SCANLON, David W. Dockter
  • Reactive extrusion process with partial condensor and reflux
    Publication number: 20020072572
    Abstract: An esterification or transesterification process comprises the steps of reacting a first polymer with a first alcohol in a reactive extruder to produce a second polymer, while also producing a second alcohol as a by-product. The second alcohol has a lower boiling point than the first alcohol, preferably at least about 100° C. lower. A gas stream is vented from the extruder apparatus that comprises both the first alcohol and the second alcohol. At least part of the first alcohol is condensed from the gas stream, thereby forming a liquid stream, which is then fed back into the reactive extruder. The condensed first alcohol then continues to further the extent of the reaction in the extruder producing the second polymer.
    Type: Application
    Filed: December 8, 2000
    Publication date: June 13, 2002
    Inventors: Kenneth W. Russell, Shane A. Warr, Gangfeng Cai, Lawrence E. Huff, Ta Yen Ching