Patents by Inventor Richard Johnsen

Richard Johnsen 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: 8383283
    Abstract: A fuel cell includes an electrolyte matrix having a cathode side with a cathode disposed thereon and an anode side with an anode receiving portion and a sealing portion positioned peripherally to the anode receiving portion. The anode receiving portion has an anode disposed thereon. A fuel conduit has one or more one sealing platforms and having an opening extending through the fuel conduit. The anode is positioned in the opening. The fuel cell includes one or more devices for preventing the occurrence an electrical short circuit between the cathode and the sealing platform. The device for preventing the electrical short circuit is aligned with the sealing portion and sealing platform and is positioned on the electrolyte matrix, the cathode and/or the sealing platform.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: February 26, 2013
    Assignee: FuelCell Energy, Inc.
    Inventors: Chao-yi Yun, Mohammad Farooque, Abdelkader Hilmi, Richard Johnsen, Gengfu Xu
  • Patent number: 7939219
    Abstract: An apparatus and method in which a delayed carbonate electrolyte is stored in the storage areas of a non-electrolyte matrix fuel cell component and is of a preselected content so as to obtain a delayed time release of the electrolyte in the storage areas in the operating temperature range of the fuel cell.
    Type: Grant
    Filed: May 27, 2005
    Date of Patent: May 10, 2011
    Assignee: FuelCell Energy, Inc.
    Inventors: Richard Johnsen, Chao-Yi Yuh, Mohammad Farooque
  • Publication number: 20100266932
    Abstract: A fuel cell including an electrolyte matrix having a cathode side with a cathode disposed thereon and an anode side with an anode receiving portion and a sealing portion positioned peripherally to the anode receiving portion. The anode receiving portion has an anode disposed thereon. A fuel conduit has one or more one sealing platforms and having an opening extending through the fuel conduit. The anode is positioned in the opening. The fuel cell includes one or more devices for preventing the occurrence an electrical short circuit between the cathode and the sealing platform. The device for preventing the electrical short circuit is aligned with the sealing portion and sealing platform and is positioned on the electrolyte matrix, the cathode and/or the sealing platform.
    Type: Application
    Filed: April 15, 2009
    Publication date: October 21, 2010
    Applicant: FUELCELL ENERGY, INC.
    Inventors: Chao-yi Yuh, Mohammad Farooque, Abdelkader Hilmi, Richard Johnsen, Gengfu Xu
  • Patent number: 7201985
    Abstract: An assembly for storing electrolyte in a carbonate fuel cell is provided. The combination of a soft, compliant and resilient cathode current collector and an inactive anode part including a foam anode in each assembly mitigates electrical contact loss during operation of the fuel cell stack. In addition, an electrode reservoir in the positive end assembly and an electrode sink in the negative end assembly are provided, by which ribbed and flat cathode members inhibit electrolyte migration in the fuel cell stack.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: April 10, 2007
    Assignee: FuelCell Energy, Inc.
    Inventors: Chao-Yi Yuh, Mohammad Farooque, Richard Johnsen
  • Publication number: 20060269830
    Abstract: An apparatus and method in which a delayed carbonate electrolyte is stored in the storage areas of a non-electrolyte matrix fuel cell component and is of a preselected content so as to obtain a delayed time release of the electrolyte in the storage areas in the operating temperature range of the fuel cell.
    Type: Application
    Filed: May 27, 2005
    Publication date: November 30, 2006
    Inventors: Richard Johnsen, Chao-Yi Yuh, Mohammad Farooque
  • Patent number: 6890679
    Abstract: A fuel cell cathode comprising a cathode body having rib regions and base regions which connect the rib regions, the rib regions being of greater thickness and of less porosity than the base regions.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: May 10, 2005
    Assignee: FuelCell Energy, Inc.
    Inventors: Richard Johnsen, Chao-Yi Yuh, Michael Alexander
  • Publication number: 20040121200
    Abstract: An end cell for storing electrolyte in a carbonate fuel cell. The combination of a soft, compliant and resilient cathode current collector and an inactive anode part including a foam anode in each end cell mitigates electrical contact loss during operation of the fuel cell stack. In addition, an electrode reservoir in the positive end cell and an electrode sink in the negative end cell are provided, by which ribbed and flat cathode members inhibit electrolyte migration in the fuel cell stack.
    Type: Application
    Filed: December 24, 2002
    Publication date: June 24, 2004
    Inventors: Richard Johnsen, Chao-Yi Yuh, Mohammad Farooque
  • Publication number: 20040121213
    Abstract: An assembly for storing electrolyte in a carbonate fuel cell is provided. The combination of a soft, compliant and resilient cathode current collector and an inactive anode part including a foam anode in each assembly mitigates electrical contact loss during operation of the fuel cell stack. In addition, an electrode reservoir in the positive end assembly and an electrode sink in the negative end assembly are provided, by which ribbed and flat cathode members inhibit electrolyte migration in the fuel cell stack.
    Type: Application
    Filed: April 3, 2003
    Publication date: June 24, 2004
    Inventors: Chao-Yi Yuh, Mohammad Farooque, Richard Johnsen
  • Publication number: 20040038115
    Abstract: A fuel cell cathode comprising a cathode body having rib regions and base regions which connect the rib regions, the rib regions being of greater thickness and of less porosity than the base regions.
    Type: Application
    Filed: August 23, 2002
    Publication date: February 26, 2004
    Inventors: Richard Johnsen, Chao-Yi Yuh, Michael Alexander