Patents by Inventor Mark Roger Brown

Mark Roger Brown 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).

  • Method for improving creep resistance and low cycle fatigue properties of pressure-containing components
    Patent number: 7833362
    Abstract: A method by which high temperature properties of a ductile iron alloy, including creep and LCF properties, can be increased for pressure-containing components that are subject to creep and low cycle fatigue. The method comprises modifying the ductile iron alloy to contain 0.4 to 0.8 weight percent molybdenum. A casting of the modified ductile iron alloy is produced and then annealed at a temperature of at least 725° C. for not less than five hours to eliminate carbides and/or stabilize pearlite in the casting. The annealed casting of the modified ductile iron alloy exhibits improved creep resistance and low cycle fatigue properties in comparison to an identical casting of a ductile iron alloy that does not contain molybdenum.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: November 16, 2010
    Assignee: General Electric Company
    Inventors: Mark Roger Brown, Thomas Robbins Tipton, Liming Xu
  • Combustion liner for gas turbine formed of cast nickel-based superalloy
    Patent number: 7540156
    Abstract: A combustion liner for a gas turbine combustion system is provided. The combustion liner comprises a combustion zone between an inlet end and an exhaust end. The combustion liner comprises a one-piece casting construction. The combustion liner is formed from a nickel-based superalloy having strength characteristics.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: June 2, 2009
    Assignee: General Electric Company
    Inventors: Mark Roger Brown, Thomas Frank Fric, Thomas Edward Johnson, Anne Elizabeth Kolman
  • METHOD FOR IMPROVING CREEP RESISTANCE AND LOW CYCLE FATIGUE PROPERTIES OF PRESSURE-CONTAINING COMPONENTS
    Publication number: 20090007995
    Abstract: A method by which high temperature properties of a ductile iron alloy, including creep and LCF properties, can be increased for pressure-containing components that are subject to creep and low cycle fatigue. The method comprises modifying the ductile iron alloy to contain 0.4 to 0.8 weight percent molybdenum. A casting of the modified ductile iron alloy is produced and then annealed at a temperature of at least 725° C. for not less than five hours to eliminate carbides and/or stabilize pearlite in the casting. The annealed casting of the modified ductile iron alloy exhibits improved creep resistance and low cycle fatigue properties in comparison to an identical casting of a ductile iron alloy that does not contain molybdenum.
    Type: Application
    Filed: September 22, 2008
    Publication date: January 8, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Mark Roger Brown, Thomas Robbins Tipton, Liming Xu
  • Process of selectively removing layers of a thermal barrier coating system
    Patent number: 6955308
    Abstract: A process of selectively removing layers of a thermal barrier coating system from a surface of a component. A thermal barrier coating system of interest comprises an inner metallic bond coat layer, an outer metallic bond coat layer that is less dense than the inner metallic bond coat layer, and a ceramic topcoat having vertical cracks therethrough. The process involves directing a jet of liquid at the component to simultaneously remove the topcoat and the outer metallic bond coat layer without removing the inner metallic bond coat layer.
    Type: Grant
    Filed: June 23, 2003
    Date of Patent: October 18, 2005
    Assignee: General Electric Company
    Inventors: Janna Lannell Segrest, David Vincent Bucci, Mark Roger Brown, Joseph Anthony DeBarro
  • PROCESS OF SELECTIVELY REMOVING LAYERS OF A THERMAL BARRIER COATING SYSTEM
    Publication number: 20040256504
    Abstract: A process of selectively removing layers of a thermal barrier coating system from a surface of a component. A thermal barrier coating system of interest comprises an inner metallic bond coat layer, an outer metallic bond coat layer that is less dense than the inner metallic bond coat layer, and a ceramic topcoat having vertical cracks therethrough. The process involves directing a jet of liquid at the component to simultaneously remove the topcoat and the outer metallic bond coat layer without removing the inner metallic bond coat layer.
    Type: Application
    Filed: June 23, 2003
    Publication date: December 23, 2004
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Janna Lannell Segrest, David Vincent Bucci, Mark Roger Brown, Joseph Anthony DeBarro