Patents by Inventor Curtis Alan Johnson

Curtis Alan Johnson 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: 10822696
    Abstract: An article for service at high temperatures comprises a substrate comprising a first region and a second region; and a coating disposed over the substrate. The coating comprises a first portion disposed over the first region of the substrate and a second portion disposed over the second region of the substrate. The coating includes a layer comprising a ceramic material and further including a quantity of surface-connected voids, and a protective agent is disposed within at least some of the surface-connected voids of the layer. Within the first portion, the agent is present within the layer at a concentration of less than or equal to 4 percent by volume of the layer exclusive of the voids, while, within the second portion, the agent is present within the layer at a concentration up to the carrying capacity of the layer. Methods for forming the article are also presented.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: November 3, 2020
    Assignee: General Electric Company
    Inventors: Cathleen Ann Hoel, Kristen Hall Brosnan, Curtis Alan Johnson, Shankar Sivaramakrishnan
  • Publication number: 20200240273
    Abstract: A component includes an outer wall that includes an exterior surface, and at least one plenum defined interiorly to the outer wall and configured to receive a cooling fluid therein. The component also includes a coating system disposed on the exterior surface. The coating system has a thickness. The component further includes a plurality of adaptive cooling openings defined in the outer wall. Each of the adaptive cooling openings extends from a first end inflow communication with the at least one plenum, outward through the exterior surface and to a second end covered underneath at least a portion of the thickness of the coating system.
    Type: Application
    Filed: October 13, 2017
    Publication date: July 30, 2020
    Inventors: James Albert TALLMAN, Andrew Philip SHAPIRO, Gary Michael ITZEL, Curtis Alan JOHNSON, Victor John MORGAN, Jacob John KITTLESON, Bradley Thomas RICHARDS
  • Publication number: 20180371923
    Abstract: Methods for preparing slotted ceramic coatings and the resulting components comprising the same are provided. The methods and products include the incorporation of a coating system comprising a ceramic coating with cooling holes disposed throughout the ceramic coating and slots defined in the thermal barrier coating and disposed in relation to the cooling holes. The resulting ceramic coating has improved resistance to CMAS infiltration and improved compliance resulting in an increased life of the coated component.
    Type: Application
    Filed: June 27, 2017
    Publication date: December 27, 2018
    Inventors: Curtis Alan Johnson, Hrishikesh Keshavan, Shankar Sivaramakrishnan, Byron Andrew Pritchard, JR., Hongqiang Chen, Bernard Patrick Bewlay
  • Publication number: 20180163062
    Abstract: An article for service at high temperatures comprises a substrate comprising a first region and a second region; and a coating disposed over the substrate. The coating comprises a first portion disposed over the first region of the substrate and a second portion disposed over the second region of the substrate. The coating includes a layer comprising a ceramic material and further including a quantity of surface-connected voids, and a protective agent is disposed within at least some of the surface-connected voids of the layer. Within the first portion, the agent is present within the layer at a concentration of less than or equal to 4 percent by volume of the layer exclusive of the voids, while, within the second portion, the agent is present within the layer at a concentration up to the carrying capacity of the layer. Methods for forming the article are also presented.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 14, 2018
    Inventors: Cathleen Ann Hoel, Kristen Hall Brosnan, Curtis Alan Johnson, Shankar Sivaramakrishnan
  • Patent number: 9561986
    Abstract: An article includes a silicon-containing region; at least one outer layer overlying a surface of the silicon-containing region; and a constituent layer on the surface of the silicon-containing region and between and contacting the silicon-containing region and the at least one outer layer, the constituent layer being formed by constituents of the silicon-containing region and being susceptible to creep within an operating environment of the article, wherein the silicon-containing region defines a plurality of channels and a plurality of ridges that interlock within the plurality of channels are formed in the silicon-containing region to physically interlock the at least one outer layer with the silicon-containing region through the constituent layer.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: February 7, 2017
    Assignee: General Electric Company
    Inventors: Don Mark Lipkin, Curtis Alan Johnson, Peter Joel Meschter, Sairam Sundaram, Julin Wan
  • Publication number: 20160265367
    Abstract: Article includes a substrate, a bond coat disposed on the substrate, an environmental barrier coating disposed on the bond coat, and a patterned abradable coating disposed on the second top coat. The environmental barrier coating includes an intermediate layer disposed on the bond coat, a sealing layer disposed on the intermediate layer, a first top coat disposed on the sealing layer, and a second top coat disposed on the first top coat. The first top coat is different from the second top coat.
    Type: Application
    Filed: December 22, 2014
    Publication date: September 15, 2016
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Larry Steven ROSENZWEIG, Curtis Alan JOHNSON, Peter Joel MESCHTER, Reza SARRAFI-NOUR
  • Patent number: 9428650
    Abstract: An article includes a silicon-containing region including surface features on a surface thereof. The surface features include depressions, protuberances, or combinations thereof. At least one outer layer overlies the surface of the silicon-containing region. A constituent layer is provided on the surface of the silicon-containing region and between and contacting the silicon-containing region and the at least one outer layer. The constituent layer is formed by constituents of the silicon-containing region and is susceptible to creep within an operating environment of the article. The surface features physically interlock the at least one outer layer with the silicon-containing region through the constituent layer.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: August 30, 2016
    Assignee: General Electric Company
    Inventors: Peter Joel Meschter, Curtis Alan Johnson, Sairam Sundaram, Julin Wan, Don Mark Lipkin
  • Patent number: 9365725
    Abstract: An article for use in aggressive environments is presented. In one embodiment, the article comprises a substrate and a self-sealing and substantially hermetic sealing layer comprising an alkaline-earth aluminosilicate disposed over the bondcoat. The substrate may be any high-temperature material, including, for instance, silicon-bearing ceramics and ceramic matrix composites. A method for making such articles is also presented. The method comprises providing a substrate; disposing a self-sealing alkaline-earth aluminosilicate layer over the substrate; and heating the sealing layer to a sealing temperature at which at least a portion of the sealing layer will flow.
    Type: Grant
    Filed: November 16, 2007
    Date of Patent: June 14, 2016
    Assignee: General Electric Company
    Inventors: Reza Sarrafi-Nour, Peter Joel Meschter, Curtis Alan Johnson, Krishan Lal Luthra, Larry Steven Rosenzweig
  • Patent number: 9287485
    Abstract: Method for joining wires using low resistivity joints is provided. More specifically, methods of joining one or more wires having superconductive filaments, such as magnesium diboride filaments, are provided. The wires are joined by a low resistivity joint to form wires of a desired length for applications, such in medical imaging applications.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: March 15, 2016
    Assignee: General Electric Company
    Inventors: Judson Sloan Marte, Xianrui Huang, Evangelos Trifon Laskaris, Bruce Alan Knudsen, Thomas Robert Raber, Robert John Zabala, James William Bray, Paul Shadforth Thompson, Sergio Paulo Martins Loureiro, Curtis Alan Johnson, Sylvia Marie Decarr
  • Patent number: 9249514
    Abstract: An article and method of forming the article are disclosed. The article includes a substrate, an overlay bond coat deposited over the substrate and a topcoat deposited over the bond coat. The bond coat of the article includes a plasma affected region proximate to an interface between the bond coat and the topcoat, and the plasma affected region includes an elongated intergranular phase. The method of depositing includes adjusting the plasma spray conditions so as to form the plasma affected region proximate to an interface between the bond coat and the topcoat, and elongated intergranular phases in the plasma affected regions.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: February 2, 2016
    Assignee: General Electric Company
    Inventors: Shankar Sivaramakrishnan, James Anthony Ruud, Curtis Alan Johnson, Larry Steven Rosenzweig
  • Patent number: 9194238
    Abstract: A system for damping vibrations in a turbine includes a first rotating blade having a first ceramic airfoil, a first ceramic platform connected to the first ceramic airfoil, and a first root connected to the first ceramic platform. A second rotating blade adjacent to the first rotating blade includes a second ceramic airfoil, a second ceramic platform connected to the second ceramic airfoil, and a second root connected to the second ceramic platform. A non-metallic platform damper has a first position in simultaneous contact with the first and second ceramic platforms.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: November 24, 2015
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Herbert Chidsey Roberts, III, Curtis Alan Johnson, Glenn Curtis Taxacher
  • Patent number: 9083024
    Abstract: A battery stack includes a plurality of curved base layers, at least one curved bipolar layer, at least one anode layer disposed between a first curved base layer of the plurality of curved base layers and the at least one curved bipolar layer, at least one cathode layer disposed between the at least one bipolar layer, a second base layer and a plurality of seals. The first base layer and the at least one bipolar layer are provided with one or more seals that seal the first base layer to the at least one bipolar layer without contacting the anode and/or the cathode layer.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: July 14, 2015
    Assignee: General Electric Company
    Inventors: Shu Ching Quek, Chandra Sekher Yerramalli, Curtis Alan Johnson, Reza Sarrafi-Nour
  • Publication number: 20150140353
    Abstract: An article and method of forming the article are disclosed. The article includes a substrate, an overlay bond coat deposited over the substrate and a topcoat deposited over the bond coat. The bond coat of the article includes a plasma affected region proximate to an interface between the bond coat and the topcoat, and the plasma affected region includes an elongated intergranular phase. The method of depositing includes adjusting the plasma spray conditions so as to form the plasma affected region proximate to an interface between the bond coat and the topcoat, and elongated intergranular phases in the plasma affected regions.
    Type: Application
    Filed: August 31, 2012
    Publication date: May 21, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Shankar Sivaramakrishnan, James Anthony Ruud, Curtis Alan Johnson, Larry Steven Rosenzweig
  • Publication number: 20150118444
    Abstract: A method of forming an article includes forming a silicon-containing layer on a silicon-containing region of a surface of a substrate of the article; forming a plurality of channels and ridges in the silicon-containing layer; and forming at least one outer layer overlying the surface of the silicon-containing region. The plurality of channels and ridges may be formed by adding silicon-containing material to the silicon-containing layer. The channels and ridges may be formed by subtracting material from the silicon-containing layer. The channels and ridges may be formed by forming channels or grooves in the silicon-containing region of the surface of the substrate prior to formation of the silicon-containing layer.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Don Mark Lipkin, Curtis Alan Johnson, Joshua Lee Margolies, Larry Steven Rosenzweig, Julin Wan
  • Publication number: 20150118443
    Abstract: An article includes a silicon-containing region; at least one outer layer overlying a surface of the silicon-containing region; and a constituent layer on the surface of the silicon-containing region and between and contacting the silicon-containing region and the at least one outer layer, the constituent layer being formed by constituents of the silicon-containing region and being susceptible to creep within an operating environment of the article, wherein the silicon-containing region defines a plurality of channels and a plurality of ridges that interlock within the plurality of channels are formed in the silicon-containing region to physically interlock the at least one outer layer with the silicon-containing region through the constituent layer.
    Type: Application
    Filed: October 31, 2013
    Publication date: April 30, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Don Mark Lipkin, Curtis Alan Johnson, Peter Joel Meschter, Sairam Sundaram, Julin Wan
  • Publication number: 20140162027
    Abstract: An article includes a silicon-containing region including surface features on a surface thereof. The surface features include depressions, protuberances, or combinations thereof. At least one outer layer overlies the surface of the silicon-containing region. A constituent layer is provided on the surface of the silicon-containing region and between and contacting the silicon-containing region and the at least one outer layer. The constituent layer is formed by constituents of the silicon-containing region and is susceptible to creep within an operating environment of the article. The surface features physically interlock the at least one outer layer with the silicon-containing region through the constituent layer.
    Type: Application
    Filed: December 11, 2012
    Publication date: June 12, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Peter Joel Meschter, Curtis Alan Johnson, Sairam Sundaram, Julin Wan, Don Mark Lipkin
  • Patent number: 8629592
    Abstract: Disclosed herein is a system including a motor comprising a rotor, a stator and a sealing assembly having at least one joint and a monolithic ceramic separator. Each joint of the sealing assembly is a chemical bond joint, and the monolithic ceramic separator is disposed in a gap between the rotor and the stator of the motor such that the sealing assembly hermetically isolates the rotor and the stator.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: January 14, 2014
    Assignee: General Electric Company
    Inventors: Curtis Alan Johnson, Myles Standish Peterson, II, Jeremy Daniel Vandam, Timothy James Yosenick, Konrad Roman Weeber, John Russell Yagielski, Wayne Charles Hasz, Martin Mathew Morra
  • Publication number: 20130108912
    Abstract: A battery stack includes a plurality of curved base layers, at least one curved bipolar layer, at least one anode layer disposed between a first curved base layer of the plurality of curved base layers and the at least one curved bipolar layer, at least one cathode layer disposed between the at least one bipolar layer, a second base layer and a plurality of seals. The first base layer and the at least one bipolar layer are provided with one or more seals that seal the first base layer to the at least one bipolar layer without contacting the anode and/or the cathode layer.
    Type: Application
    Filed: October 27, 2011
    Publication date: May 2, 2013
    Inventors: Shu Ching Quek, Chandra Sekher Yerramalli, Curtis Alan Johnson, Reza Sarrafi-Nour
  • Publication number: 20120165200
    Abstract: Method for joining wires using low resistivity joints is provided. More specifically, methods of joining one or more wires having superconductive filaments, such as magnesium diboride filaments, are provided. The wires are joined by a low resistivity joint to form wires of a desired length for applications, such in medical imaging applications.
    Type: Application
    Filed: March 9, 2012
    Publication date: June 28, 2012
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Judson Sloan Marte, Xianrui Huang, Evangelos Trifon Laskaris, Bruce Alan Knudsen, Thomas Robert Raber, Robert John Zabala, James William Bray, Paul Shadforth Thompson, Sergio Paulo Martins Loureiro, Curtis Alan Johnson, Sylvia Marie Decarr
  • Patent number: 8168259
    Abstract: An article for use in aggressive environments is presented. In one embodiment, the article comprises a substrate and a self-sealing and substantially hermetic sealing layer disposed over the bondcoat. The substrate may be any high-temperature material, including, for instance, silicon-bearing ceramics and ceramic matrix composites. A method for making such articles is also presented. The method comprises providing a substrate; disposing a self-sealing layer over the substrate; and heating the sealing layer to a sealing temperature at which at least a portion of the sealing layer will flow.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: May 1, 2012
    Assignee: General Electric Company
    Inventors: Reza Sarrafi-Nour, Krishan Lal Luthra, Peter Joel Meschter, Curtis Alan Johnson