Patents by Inventor Reza Sarrafi-Nour

Reza Sarrafi-Nour 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: 10093810
    Abstract: An article includes a substrate and a coating provided on a surface of the substrate. The coating includes at least one metal silicide layer consisting essentially of MoSi2 or WSi2 or (Mo, W)Si2 or a platinum group metal silicide and at least one layer consisting essentially of Si3N4.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 9, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Julin Wan, Milivoj Konstantin Brun, Peter Joel Meschter, Reza Sarrafi-Nour, Don Mark Lipkin
  • Publication number: 20180238150
    Abstract: Embodiments of the disclosure are a method of non-line-of-sight coating of a sand screen for use in wellbores during the production of hydrocarbon fluids from subterranean formations. Also disclosed is a system comprising a sand screen with one or more components that have uniformly coated internal and external surfaces.
    Type: Application
    Filed: February 15, 2018
    Publication date: August 23, 2018
    Inventors: Jeremy Alexander Davis, Antonio Lazo, Reza Sarrafi-Nour, David Reuel Underdown
  • Patent number: 9938839
    Abstract: Articles suitable for use as high-temperature machine components include a substrate and an environmental barrier coating disposed over the substrate, where the environmental barrier coating includes at least one hermetic self-sealing layer formed from a mixture including an alkaline earth metal aluminosilicate and a rare-earth silicate, and where the at least one hermetic self-sealing layer exhibits substantially no net remnant or residual expansion when subjected to high temperature heat treatment. The environmental barrier coating can further include a bondcoat disposed between the substrate and the hermetic self-sealing layer, a topcoat disposed over the hermetic self-sealing layer, and/or an intermediate layer disposed between the hermetic self-sealing layer and the bondcoat. The intermediate layer can include a barrier material that is substantially inert with respect to silica.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 10, 2018
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Larry Steven Rosenzweig, Reza Sarrafi-Nour
  • Publication number: 20170218779
    Abstract: An article for high temperature service is presented herein. One embodiment is an article including a substrate having a silicon-bearing ceramic matrix composite; and a layer disposed over the substrate, wherein the layer includes silicon and a dopant, the dopant including aluminum. In another embodiment, the article includes a ceramic matrix composite substrate, wherein the composite includes a silicon-bearing ceramic and a dopant, the dopant including aluminum; a bond coat disposed over the substrate, where the bond coat includes elemental silicon, a silicon alloy, a silicide, or combinations including any of the aforementioned; and a coating disposed over the bond coat, the coating including a silicate (such as an aluminosilicate or rare earth silicate), yttria-stabilized zirconia, or a combination including any of the aforementioned.
    Type: Application
    Filed: August 18, 2015
    Publication date: August 3, 2017
    Inventors: Krishnan Lal LUTHRA, Julin WAN, Reza SARRAFI-NOUR
  • 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: 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
  • Publication number: 20160003063
    Abstract: Articles suitable for use as high-temperature machine components include a substrate and an environmental barrier coating disposed over the substrate, where the environmental barrier coating includes at least one hermetic self-sealing layer formed from a mixture including an alkaline earth metal aluminosilicate and a rare-earth silicate, and where the at least one hermetic self-sealing layer exhibits substantially no net remnant or residual expansion when subjected to high temperature heat treatment. The environmental barrier coating can further include a bondcoat disposed between the substrate and the hermetic self-sealing layer, a topcoat disposed over the hermetic self-sealing layer, and/or an intermediate layer disposed between the hermetic self-sealing layer and the bondcoat. The intermediate layer can include a barrier material that is substantially inert with respect to silica.
    Type: Application
    Filed: March 14, 2014
    Publication date: January 7, 2016
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Larry Steven ROSENZWEIG, Reza SARRAFI-NOUR
  • Publication number: 20150221904
    Abstract: Systems and methods for providing the assembly electrochemical cells in neutral materials are described. Components can be eliminated from traditional electrochemical cell designs in this fashion. Embodiments of assemblies include a module block formed of a neutral material including a plurality of cell cavities, the cell cavities having at least an open top end. Each of the plurality of cell cavities is configured as a cell case for an electrochemical cell. The cavities can be provided a feed-through assembly, or have an electrochemical cell assembled therein.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 6, 2015
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: KRISTOPHER JOHN FRUTSCHY, REZA SARRAFI-NOUR, SANDOR ISTVAN HOLLO, THOMAS ANGELIU, DONALD WAYNE WHISENHUNT, JR., DANIEL QI TAN, SATISH GUNTURI, ROGER NEIL BULL, JOHN RAYMOND KRAHN, DAVID CHARLES BOGDAN, JR.
  • 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
  • Patent number: 9028997
    Abstract: The present application provides for ceramic collars and metal rings for active brazing in sodium-based thermal batteries. The ceramic collar may be an alpha-alumina collar configured for active brazing, and thereby sealing, to outer and inner Ni rings for use in NaMx cells. The portions of the alpha-alumina collar active brazed to the outer and inner Ni rings may be outwardly facing and include inwardly extending recesses. The portions of the outer and inner Ni rings active brazed to the outwardly facing portions of the collar may be inwardly facing. The alpha-alumina collar may include a greater coefficient of thermal expansion than each of the outer and inner Ni rings, and the alpha-alumina collar and outer and inner Ni rings may be configured such that a portion of the outer and inner Ni rings is deformed into the inwardly extending recesses of the alpha-alumina collar after active brazing thereof.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: May 12, 2015
    Assignee: General Electric Company
    Inventors: Michael Colan Moscinski, Reza Sarrafi-Nour, Badri Narayan Ramamurthi, Mohandas Nayak, Darren Michael Stohr, Sundeep Kumar, Mohamed Rahmane, Arunabh Basak, Raghavendra Rao Adharapurapu
  • Patent number: 8916285
    Abstract: A cell module and modular cell tray apparatus for a modular electrochemical device that are more easily manufactured and serviced. A cell module is provided having a plurality of electrochemical cells. The cell module includes an electrically conductive carrier element having a plurality of apertures, wherein each aperture is configured to accept a top portion of an electrode body of an electrochemical cell. A modular cell tray apparatus is provided having a plurality of the cell modules. The cell tray apparatus includes an electrically insulating tray having rows of cell receptacles to accept the cell modules. A modular electrochemical device is provided having a plurality of the cell tray apparatuses. The modular electrochemical device includes a plurality of electrical connectors configured to electrically connect the cell modules within a cell tray apparatus, and to electrically connect the cell tray apparatuses to each other.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: December 23, 2014
    Assignee: General Electric Company
    Inventors: Kristopher John Frutschy, Reza Sarrafi-Nour, Stefan Rakuff, Sandor Istvan Hollo, Narayan Subramanian, William Patrick Waters, James Thorpe Browell, Kanthi Latha Bhamidipati
  • Publication number: 20140272344
    Abstract: An article includes a substrate and a coating provided on a surface of the substrate. The coating includes at least one metal silicide layer consisting essentially of MoSi2 or WSi2 or (Mo, W)Si2 or a platinum group metal silicide and at least one layer consisting essentially of Si3N4.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Julin Wan, Milivoj Konstantin Brun, Peter Joel Meschter, Reza Sarrafi-Nour, Don Mark Lipkin
  • Patent number: 8816635
    Abstract: An electrochemical cell includes an anode connectable to a current tap and a charging medium in electrical contact with the anode. A switching device is configured to stop a charging operation of the electrochemical cell upon activation by the charging medium.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: August 26, 2014
    Assignee: General Electric Company
    Inventors: Chandra Sekher Yerramalli, Badri Narayan Ramamurthi, Reza Sarrafi-Nour, Andrew Philip Shapiro, Anil Raj Duggal
  • Publication number: 20140186691
    Abstract: The present application provides for ceramic collars and metal rings for active brazing in sodium-based thermal batteries. The ceramic collar may be an alpha-alumina collar configured for active brazing, and thereby sealing, to outer and inner Ni rings for use in NaMx cells. The portions of the alpha-alumina collar active brazed to the outer and inner Ni rings may be outwardly facing and include inwardly extending recesses. The portions of the outer and inner Ni rings active brazed to the outwardly facing portions of the collar may be inwardly facing. The alpha-alumina collar may include a greater coefficient of thermal expansion than each of the outer and inner Ni rings, and the alpha-alumina collar and outer and inner Ni rings may be configured such that a portion of the outer and inner Ni rings is deformed into the inwardly extending recesses of the alpha-alumina collar after active brazing thereof.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 3, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Michael Colan MOSCINSKI, Reza SARRAFI-NOUR, Badri Narayan RAMAMURTHI, Mohandas NAYAK, Darren Michael STOHR, Sundeep KUMAR, Mohamed RAHMANE, Arunabh BASAK, Raghavendra Rao ADHARAPURAPU
  • Patent number: 8652689
    Abstract: An energy storage device includes a housing having an interior surface defining a volume and a plurality of solid electrolyte elements disposed in the volume. Each solid electrolyte element has a first surface that defines at least a portion of a first, cathodic chamber, and a second surface that defines a second, anodic chamber. A plurality of individual anodic chambers are thus provided, at least one of which is evacuated below atmospheric pressure. A majority of anodic chambers can be spaced from one another in a manner that provides a substantially uniform reaction rate throughout the cathodic chamber.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: February 18, 2014
    Assignee: General Electric Company
    Inventors: Chandra Sekher Yerramalli, Anil Raj Duggal, Andrew Philip Shapiro, Mohamed Rahmane, Reza Sarrafi-Nour, Gregory John Parker, Alireza Namazifard, Badri Narayan Ramamurthi
  • Patent number: 8647767
    Abstract: An energy storage device includes a housing having an interior surface defining a volume and a plurality of solid electrolyte elements disposed in the volume. Each solid electrolyte element has a first surface that defines at least a portion of a first, cathodic chamber, and a second surface that defines a second, anodic chamber. A plurality of individual anode chambers are thus provided, a majority of which are in ionic communication with the cathode chamber through a majority of the solid electrolyte elements and which are also provided with a sodium level control mechanism.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: February 11, 2014
    Assignee: General Electric Company
    Inventors: Reza Sarrafi-Nour, Andrew Shapiro, Chandra Sekher Yerramalli, Badri Narayan Ramamurthi
  • Publication number: 20130171507
    Abstract: A cell module and modular cell tray apparatus for a modular electrochemical device that are more easily manufactured and serviced. A cell module is provided having a plurality of electrochemical cells. The cell module includes an electrically conductive carrier element having a plurality of apertures, wherein each aperture is configured to accept a top portion of an electrode body of an electrochemical cell. A modular cell tray apparatus is provided having a plurality of the cell modules. The cell tray apparatus includes an electrically insulating tray having rows of cell receptacles to accept the cell modules. A modular electrochemical device is provided having a plurality of the cell tray apparatuses. The modular electrochemical device includes a plurality of electrical connectors configured to electrically connect the cell modules within a cell tray apparatus, and to electrically connect the cell tray apparatuses to each other.
    Type: Application
    Filed: December 28, 2011
    Publication date: July 4, 2013
    Inventors: Kristopher John Frutschy, Reza Sarrafi-Nour, Stefan Rakuff, Sandor Istvan Hollo, Narayan Subramanian, William Patrick Waters, James Thorpe Browell, Kanthi Latha Bhamidipati
  • 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: 20130082642
    Abstract: An electrochemical cell includes an anode connectable to a current tap and a charging medium in electrical contact with the anode. A switching device is configured to stop a charging operation of the electrochemical cell upon activation by the charging medium.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Inventors: Chandra Sekher Yerramalli, Badri Narayan Ramamurthi, Reza Sarrafi-Nour, Andrew Philip Shapiro, Anil Raj Duggal
  • 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