Patents by Inventor Boguslav M. Wozniczka

Boguslav M. Wozniczka 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).

  • Electrochemical fuel cell stack with concurrently flowing coolant and oxidant streams
    Patent number: 5547776
    Abstract: A fuel cell assembly within an electrochemical fuel cell stack has a cooling jacket disposed adjacent the cathode layer. The cooling layer comprises a coolant stream inlet, a coolant stream outlet, and at least one channel for directing a coolant stream from the coolant stream inlet to the coolant stream outlet. The coolant stream channels extend such that the coolest region of the cooling layer substantially coincides with the region of the adjacent cathode layer having the highest concentration of oxygen (and also the lowest water content), and the warmest region of the cooling layer substantially coincides with the region of the adjacent cathode layer having the lowest concentration of oxygen (and also the highest water content).
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: August 20, 1996
    Assignees: Ballard Power Systems Inc., Daimler-Benz AG
    Inventors: Nicholas J. Fletcher, Clarence Y. Chow, Eric G. Pow, Boguslav M. Wozniczka, Henry H. Voss, Gerald Hornburg
  • Electrochemical fuel cell stack with humidification section located upstream from the electrochemically active section
    Patent number: 5382478
    Abstract: An electrochemical fuel cell stack has a humidification section located upstream from the electrochemically active section. The inlet fuel and oxidant streams are introduced into the humidification section without first being directed through the electrochemically active section. The upstream location of the humidification section in the stack enables the number of manifold openings in the active section to be reduced, thereby increasing the area available for the electrochemical reaction.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: January 17, 1995
    Assignee: Ballard Power Systems Inc.
    Inventors: Clarence Y. Chow, Boguslav M. Wozniczka