Patents by Inventor K. R. Sridhar

K. R. Sridhar 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).

  • Publication number: 20220097817
    Abstract: A method of operating a vessel includes providing hydrogen or a fuel mixture containing hydrogen and a hydrocarbon fuel to a power generator disposed on the vessel, and providing power from the power generator to an electrical load of the vessel.
    Type: Application
    Filed: September 24, 2021
    Publication date: March 31, 2022
    Inventors: Martin PERRY, Carl COTTULI, Suminderpal SINGH, K.R. SRIDHAR
  • Patent number: 9947955
    Abstract: A fuel cell stack module includes a base, a cover dome removably positioned on the base, and a plurality of fuel cell stacks removably positioned on the base below the cover dome. A modular fuel cell system includes a plurality of the fuel cell stack modules, where each fuel cell stack module may be electrically disconnected, removed from the fuel cell system, repaired or serviced without stopping an operation of the other fuel cell stack modules in the fuel cell system.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: April 17, 2018
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: K. R. Sridhar, Swaminathan Venkataraman, William David Lyle, Arne Ballantine
  • Publication number: 20170203659
    Abstract: A method for charging electric vehicles includes receiving information regarding an electric vehicle. At least a portion of the information is received through a vehicle interface configured to place a battery of the electric vehicle into electrical communication with a fuel cell system. A charge is delivered from the fuel cell system to the battery of the electric vehicle through the vehicle interface without use of a direct current to alternating current (DC/AC) converter. The charge is delivered based at least in part on the information.
    Type: Application
    Filed: February 2, 2017
    Publication date: July 20, 2017
    Inventors: K.R. Sridhar, Stuart Aaron, Arne Ballantine, Peter Light, Scott Reynolds, Ramesh Srinivasan, Ranganathan Gurunathan
  • Patent number: 9597966
    Abstract: A method for charging electric vehicles includes receiving information regarding an electric vehicle. At least a portion of the information is received through a vehicle interface configured to place a battery of the electric vehicle into electrical communication with a fuel cell system. A charge is delivered from the fuel cell system to the battery of the electric vehicle through the vehicle interface without use of a direct current to alternating current (DC/AC) converter. The charge is delivered based at least in part on the information.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: March 21, 2017
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: K. R. Sridhar, Stuart Aaron, Arne Ballantine, Peter Light, Scott Reynolds, Ramesh Srinivasan, Ranganathan Gurunathan
  • Publication number: 20160072146
    Abstract: A fuel cell stack module includes a base, a cover dome removably positioned on the base, and a plurality of fuel cell stacks removably positioned on the base below the cover dome. A modular fuel cell system includes a plurality of the fuel cell stack modules, where each fuel cell stack module may be electrically disconnected, removed from the fuel cell system, repaired or serviced without stopping an operation of the other fuel cell stack modules in the fuel cell system.
    Type: Application
    Filed: October 13, 2015
    Publication date: March 10, 2016
    Inventors: K.R. Sridhar, Swaminathan Venkataraman, William David Lyle, Arne Ballantine
  • 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: 9190693
    Abstract: A fuel cell stack module includes a base, a cover dome removably positioned on the base, and a plurality of fuel cell stacks removably positioned on the base below the cover dome. A modular fuel cell system includes a plurality of the fuel cell stack modules, where each fuel cell stack module may be electrically disconnected, removed from the fuel cell system, repaired or serviced without stopping an operation of the other fuel cell stack modules in the fuel cell system.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: November 17, 2015
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: K. R. Sridhar, Swaminathan Venkataraman, William David Lyle, Arne Watson Ballantine
  • Patent number: 9166246
    Abstract: A method of operating a high temperature fuel cell system containing a plurality of fuel cell stacks includes operating one or more of the plurality of fuel cell stacks at a first output power while operating another one or more of the plurality of the fuel cell stacks at a second output power different from the first output power.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: October 20, 2015
    Assignee: BLOOM ENERGY CORPORATION
    Inventors: K. R. Sridhar, Ian Russell, Matthias Gottmann
  • Publication number: 20140170516
    Abstract: A method of operating a high temperature fuel cell system containing a plurality of fuel cell stacks includes operating one or more of the plurality of fuel cell stacks at a first output power while operating another one or more of the plurality of the fuel cell stacks at a second output power different from the first output power.
    Type: Application
    Filed: February 24, 2014
    Publication date: June 19, 2014
    Applicant: Bloom Energy Corporation
    Inventors: K.R. Sridhar, Ian Russell, Matthias Gottmann
  • Patent number: 8685579
    Abstract: A method of operating a high temperature fuel cell system containing a plurality of fuel cell stacks includes operating one or more of the plurality of fuel cell stacks at a first output power while operating another one or more of the plurality of the fuel cell stacks at a second output power different from the first output power.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: April 1, 2014
    Assignee: Bloom Enery Corporation
    Inventors: K. R. Sridhar, Ian Russell, Matthias Gottmann
  • Patent number: 8663859
    Abstract: A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and throughput of the fuel cell based on the at least one of the received cost of electricity and the received cost of fuel.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: March 4, 2014
    Assignee: Bloom Energy Corporation
    Inventors: Fred Mitlitsky, K. R. Sridhar, Matthias Gottmann, Swaminathan Venkataraman
  • Publication number: 20140049206
    Abstract: A method for charging electric vehicles includes receiving information regarding an electric vehicle. At least a portion of the information is received through a vehicle interface configured to place a battery of the electric vehicle into electrical communication with a fuel cell system. A charge is delivered from the fuel cell system to the battery of the electric vehicle through the vehicle interface without use of a direct current to alternating current (DC/AC) converter. The charge is delivered based at least in part on the information.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 20, 2014
    Applicant: Bloom Energy Corporation
    Inventors: K.R. Sridhar, Stuart Aaron, Arne Ballantine, Peter Light, Scott Reynolds, Ramesh Srinivasan, Ranganathan Gurunathan
  • Patent number: 8624549
    Abstract: A method for charging electric vehicles includes receiving information regarding an electric vehicle. At least a portion of the information is received through a vehicle interface configured to place a battery of the electric vehicle into electrical communication with a fuel cell system. A charge is delivered from the fuel cell system to the battery of the electric vehicle through the vehicle interface without use of a direct current to alternating current (DC/AC) converter. The charge is delivered based at least in part on the information.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: January 7, 2014
    Assignee: Bloom Energy Corporation
    Inventors: K. R. Sridhar, Stuart Aaron, Arne Ballantine, Peter Light, Scott Reynolds, Ramesh Srinivasan, Ranganathan Gurunathan
  • Publication number: 20120321975
    Abstract: A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and throughput of the fuel cell based on the at least one of the received cost of electricity and the received cost of fuel.
    Type: Application
    Filed: August 21, 2012
    Publication date: December 20, 2012
    Inventors: Fred Mitlitsky, K. R. Sridhar, Matthias Gottmann, Swaminathan Venkataraman
  • Patent number: 8277992
    Abstract: A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and throughput of the fuel cell based on the at least one of the received cost of electricity and the received cost of fuel.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: October 2, 2012
    Assignee: Bloom Energy Corporation
    Inventors: Fred Mitlitsky, K. R. Sridhar, Matthias Gottmann, Swaminathan Venkataraman
  • Publication number: 20120052406
    Abstract: A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and throughput of the fuel cell based on the at least one of the received cost of electricity and the received cost of fuel.
    Type: Application
    Filed: November 1, 2011
    Publication date: March 1, 2012
    Inventors: Fred Mitlitsky, K.R. Sridhar, Matthias Gottmann, Swaminathan Venkataraman
  • Patent number: 8071241
    Abstract: A method in which a high temperature electrochemical system, such as a solid oxide fuel cell system, generates hydrogen and optionally electricity in a fuel cell mode. At least a part of the generated hydrogen is separated and stored or provided to a hydrogen using device. A solid oxide regenerative fuel cell system stores carbon dioxide in a fuel cell mode. The system generates a methane fuel in an electrolysis mode from the stored carbon dioxide and water by using a Sabatier subsystem. Alternatively, the system generates a hydrogen fuel in an electrolysis mode from water alone.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: December 6, 2011
    Assignee: Bloom Energy Corporation
    Inventors: K. R. Sridhar, James F. McElroy, John E. Finn, Fred Mitlitsky, Matthias Gottmann
  • Patent number: 8071246
    Abstract: A method of operating a fuel cell electrochemical system includes receiving at least one of a cost of electricity and a cost of fuel and adjusting at least one of an operating efficiency and throughput of the fuel cell based on the at least one of the received cost of electricity and the received cost of fuel.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: December 6, 2011
    Assignee: Bloom Energy Corporation
    Inventors: Fred Mitlitsky, K.R. Sridhar, Matthias Gottmann, Swaminathan Venkataraman
  • Publication number: 20110281185
    Abstract: A fuel cell stack module includes a base, a cover dome removably positioned on the base, and a plurality of fuel cell stacks removably positioned on the base below the cover dome. A modular fuel cell system includes a plurality of the fuel cell stack modules, where each fuel cell stack module may be electrically disconnected, removed from the fuel cell system, repaired or serviced without stopping an operation of the other fuel cell stack modules in the fuel cell system.
    Type: Application
    Filed: January 22, 2007
    Publication date: November 17, 2011
    Inventors: K.R. Sridhar, Swaminathan Venkataraman, William David Lyle, Arne Watson Ballantine
  • Patent number: 7878280
    Abstract: A hydrogen fueled vehicle includes a vehicle body, a hydrocarbon fuel tank, and a low pressure hydrogen gas storage vessel.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: February 1, 2011
    Assignee: Bloom Energy Corporation
    Inventors: K. R. Sridhar, James F. McElroy