Patents by Inventor Vanell L. Martin

Vanell L. Martin 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).

  • Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
    Patent number: 7049017
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: May 23, 2006
    Assignee: Relion, Inc.
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin
  • Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
    Patent number: 6982129
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: January 3, 2006
    Assignee: Relion, Inc.
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin
  • Fuel cell
    Patent number: 6828050
    Abstract: A fuel cell is disclosed and which includes an anode and a cathode and which produces a voltage output which is supplied to a load; an electrical energy storage device is provided; and a controller is electrically coupled to the fuel cell, and which periodically shunts the voltage output of the fuel cell between the anode and cathode by electrically coupling the electrical energy storage device to the anode and cathode of the fuel cell.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: December 7, 2004
    Assignee: Relion, Inc.
    Inventors: Lijun Bai, Wade A. Huravitch, David R. Lott, Vanell L. Martin
  • Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
    Patent number: 6811906
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: November 2, 2004
    Assignee: Relion, Inc.
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin
  • Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
    Patent number: 6805987
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: October 19, 2004
    Assignee: Relion, Inc.
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin
  • Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
    Publication number: 20030207159
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Application
    Filed: May 6, 2003
    Publication date: November 6, 2003
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin
  • Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
    Publication number: 20030203254
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Application
    Filed: May 2, 2003
    Publication date: October 30, 2003
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin
  • Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
    Publication number: 20030203249
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Application
    Filed: May 6, 2003
    Publication date: October 30, 2003
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin
  • Method and apparatus for monitoring equivalent series resistance and for shunting a fuel cell
    Patent number: 6620538
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: September 16, 2003
    Assignee: Avista Laboratories, Inc.
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin
  • Fuel cell
    Publication number: 20030138682
    Abstract: A fuel cell is disclosed and which includes an anode and a cathode and which produces a voltage output which is supplied to a load; an electrical energy storage device is provided; and a controller is electrically coupled to the fuel cell, and which periodically shunts the voltage output of the fuel cell between the anode and cathode by electrically coupling the electrical energy storage device to the anode and cathode of the fuel cell.
    Type: Application
    Filed: October 10, 2002
    Publication date: July 24, 2003
    Inventors: Lijun Bai, Wade A. Huravitch, David R. Lott, Vanell L. Martin
  • METHOD AND APPARATUS FOR MONITORING EQUIVALENT SERIES RESISTANCE AND FOR SHUNTING A FUEL CELL
    Publication number: 20030138683
    Abstract: A fuel cell power system comprising a fuel cell having a cathode and an anode adapted to be coupled to a fuel supply, and which is configured to produce electrical power having a current and voltage output; a controller electrically coupled with the fuel cell, and configured to selectively short the anode to the cathode of the fuel cell; and circuitry configured to measure resistance of the fuel cell in timed relation to the shorting.
    Type: Application
    Filed: January 23, 2002
    Publication date: July 24, 2003
    Applicant: Avista Laboratories, Inc.
    Inventors: Lijun Bai, David R. Lott, Vanell L. Martin