Patents by Inventor by Patricia Joanne Allan, administrator

by Patricia Joanne Allan, administrator 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 operating an electrochemical fuel cell with periodic fuel starvation at the anode
    Patent number: 6096448
    Abstract: A method and apparatus is provided for operating an electrochemical fuel cell with periodic momentary fuel starvation at the anode. It is believed that such momentary periodic fuel starvation conditions cause the anode potential to increase, resulting in the oxidation and removal of electrocatalyst poisons from the anode electrocatalyst and improved fuel cell performance. In a preferred method, while successive localized portions of the fuel cell anode are momentarily periodically fuel starved, the remainder of the fuel cell anode remains electrochemically active and saturated with fuel such that the fuel cell is continually available to generate power.
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: August 1, 2000
    Assignee: Ballard Power Systems Inc.
    Inventors: David P. Wilkinson, Clarence Y. F. Chow, Derek E. Allan, deceased, by Patricia Joanne Allan, administrator, Erik P. Johannes, Joy A. Roberts, Jean St-Pierre, Cindy J. Longley, John K. K. Chan