Patents by Inventor Ravi Oswal

Ravi Oswal 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: 10593981
    Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode. The electrolyte includes yttria stabilized zirconia and scandia stabilized zirconia, such as scandia ceria stabilized zirconia.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: March 17, 2020
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: Dien Nguyen, Ravi Oswal, Tad Armstrong, Emad El Batawi
  • Patent number: 10079393
    Abstract: Methods for fabricating an interconnect for a fuel cell stack that include providing a protective layer over at least one surface of an interconnect formed by powder pressing pre-alloyed particles containing two or more metal elements and annealing the interconnect and the protective layer at elevated temperature to bond the protective layer to the at least one surface of the interconnect.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: September 18, 2018
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: Avinash Verma, Ravi Oswal, Brandon Dawson, Brian Bollinger, Harald Herchen, Tad Armstrong
  • Patent number: 9993874
    Abstract: A chromium-iron interconnect includes at least one of Fe rich regions in the interconnect and carbon in the interconnect.
    Type: Grant
    Filed: February 24, 2015
    Date of Patent: June 12, 2018
    Assignees: BLOOM ENERGY CORPORATION, STACKPOLE INTERNATIONAL POWDER METAL, ULC
    Inventors: Rohith Shivanath, Brendan Ayre, Tad Armstrong, Michael Gasda, Daniel Darga, Harald Herchen, Chockkalingam Karuppaiah, Brandon Dawson, Ravi Oswal
  • Publication number: 20170200964
    Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode. The electrolyte includes yttria stabilized zirconia and scandia stabilized zirconia, such as scandia ceria stabilized zirconia.
    Type: Application
    Filed: January 26, 2017
    Publication date: July 13, 2017
    Inventors: Dien NGUYEN, Ravi OSWAL, Tad ARMSTRONG, Emad EL BATAWI
  • Patent number: 9214679
    Abstract: A method of making a solid oxide fuel cell (SOFC) includes providing a solid oxide electrolyte and depositing at least one electrode on the electrolyte by PVD, such as sputtering. A method of making an interconnect for a fuel cell stack includes providing an electrically conductive interconnect, and depositing a layer on the interconnect by PVD, such as depositing a LSM barrier layer by sputtering. The SOFC and the interconnect may be located in the same fuel cell stack.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: December 15, 2015
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: Dien Nguyen, Tad Armstrong, Emad El Batawi, Avinash Verma, Ravi Oswal, K. R. Sridhar, Ujwal Deshpande
  • Patent number: 9196909
    Abstract: Methods for fabricating an interconnect for a fuel cell stack include placing a compressed metal powder interconnect on a porous support, and sintering the interconnect in the presence of a non-oxidizing gas. The method may further include placing the sintered interconnect on a porous support, and oxidizing the interconnect in the presence of flowing air, or placing the sintered interconnect on a dense, non-porous support, and oxidizing the interconnect in the presence of a gas comprising pure oxygen or an oxygen/inert gas mixture that is substantially nitrogen-free.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: November 24, 2015
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: Daniel Darga, Harald Herchen, Chockkalingam Karuppaiah, Ravi Oswal, Shivanand Majagi
  • Publication number: 20150244004
    Abstract: A chromium-iron interconnect includes at least one of Fe rich regions in the interconnect and carbon in the interconnect.
    Type: Application
    Filed: February 24, 2015
    Publication date: August 27, 2015
    Inventors: Rohith SHIVANATH, Brendan AYRE, Tad ARMSTRONG, Michael GASDA, Daniel DARGA, Harald HERCHEN, Chockkalingam KARUPPAIAH, Brandon DAWSON, Ravi OSWAL
  • Patent number: 9059449
    Abstract: Methods of heat treating at least one component of a solid oxide fuel cell (SOFC) system. The method includes heating the at least one component with a rapid thermal process, wherein the rapid thermal process heats at least a portion of the component at a rate of approximately 50° C./sec or more.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: June 16, 2015
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: Ryan Hallum, Michael Gasda, Arne Ballantine, Ravi Oswal
  • Publication number: 20120244448
    Abstract: Methods of heat treating at least one component of a solid oxide fuel cell (SOFC) system. The method includes heating the at least one component with a rapid thermal process, wherein the rapid thermal process heats at least a portion of the component at a rate of approximately 50° C./sec or more.
    Type: Application
    Filed: March 23, 2012
    Publication date: September 27, 2012
    Applicant: Bloom Energy Corporation
    Inventors: Ryan Hallum, Michael Gasda, Arne Ballantine, Ravi Oswal
  • Publication number: 20100129693
    Abstract: A method of making a solid oxide fuel cell (SOFC) includes providing a solid oxide electrolyte and depositing at least one electrode on the electrolyte by PVD, such as sputtering. A method of making an interconnect for a fuel cell stack includes providing an electrically conductive interconnect, and depositing a layer on the interconnect by PVD, such as depositing a LSM barrier layer by sputtering. The SOFC and the interconnect may be located in the same fuel cell stack.
    Type: Application
    Filed: November 20, 2009
    Publication date: May 27, 2010
    Inventors: Dien Nguyen, Tad Armstrong, Emad El Bataw, Avinash Verma, Ravi Oswal, K.R. Sridhar, Ujwal Deshpande
  • Publication number: 20080261099
    Abstract: A solid oxide fuel cell (SOFC) includes a cathode electrode, a solid oxide electrolyte, and an anode electrode. The electrolyte includes yttria stabilized zirconia and scandia stabilized zirconia, such as scandia ceria stabilized zirconia.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 23, 2008
    Inventors: Dien Nguyen, Ravi Oswal, Tad Armstrong, Emad El Batawi
  • Patent number: 4722853
    Abstract: A method of printing an electrically conductive thick film ink onto a polymeric substrate. The ink comprises a polymeric binder, which is preferably a fluoropolymer, a solvent for the binder, and an electrically conductive filler. At the printing temperature the solvent is a latent solvent for the binder. After printing the temperature is raised, so that first the binder dissolves in the solvent, and then the solvent vaporizes and the binder cures. The ink may be applied to a conductive polymer, preferably fluoropolymer, substrate and used as a heater.
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: February 2, 1988
    Assignee: Raychem Corporation
    Inventors: Neville Batliwalla, Ravi Oswal, Gordon McCarty, Jeff Shafe