Patents by Inventor Ivan Chapman

Ivan Chapman 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).

  • FLUID FLOW PULSING FOR INCREASED STABILITY IN PEM FUEL CELL
    Publication number: 20080118793
    Abstract: A fuel cell system includes a fuel cell stack and a flow control device that controls a supply of a first phase fluid flowing through the fuel cell stack. A controller monitors at least one parameter of the fuel cell stack and controls the supply to generate pulses of reactant when the at least one parameter crosses a threshold to flush a second phase fluid from said fuel cell stack.
    Type: Application
    Filed: January 29, 2008
    Publication date: May 22, 2008
    Inventors: Ivan Chapman, Charles MacKintosh, Pinkhas Rapaport
  • Aligning method for repeating and non-repeating units in a fuel cell stack
    Publication number: 20060051651
    Abstract: An alignment system and method for assembling a fuel cell stack. Components of the fuel cell stack have internal alignment features and are aligned to a predetermined orientation during assembly. The system and method allow fuel cell stacks to be assembled within high tolerance levels while improving access to each component during assembly. Additionally, the system and method can provide additional rigidity to a fuel cell stack.
    Type: Application
    Filed: August 30, 2005
    Publication date: March 9, 2006
    Inventors: Jeffrey Rock, Benno Andreas-Schott, Thomas Migliore, Ivan Chapman, Matthew Beutel, Mark Keyser
  • Fluid flow pulsing for increased stability in PEM fuel cell
    Publication number: 20050260463
    Abstract: A fuel cell system includes a fuel cell stack and a flow control device that controls a supply of a first phase fluid flowing through the fuel cell stack. A controller monitors at least one parameter of the fuel cell stack and controls the supply to generate pulses of reactant when the at least one parameter crosses a threshold to flush a second phase fluid from said fuel cell stack.
    Type: Application
    Filed: May 21, 2004
    Publication date: November 24, 2005
    Inventors: Ivan Chapman, Charles MacKintosh, Pinkhas Rapaport