Patents by Inventor Gerald J. Koncar

Gerald J. Koncar 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).

  • Folded metal bipolar sheets for fuel cells
    Patent number: 6905793
    Abstract: In a fuel cell stack, a bipolar separator plate having two joined together coextensive separator plate elements having perpendicularly disposed corrugated regions and forming a coolant chamber there between. By virtue of this arrangement, fuel and oxidant gases fed to the fuel cell stack have a cross-flow relationship. Internal stack manifolding is provided for distribution of a coolant to each of the coolant chambers.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: June 14, 2005
    Assignee: Gas Technology Institute
    Inventors: Leonard G. Marianowski, Gerald J. Koncar, Qinbai Fan, Jeremy Chervinko
  • Folded metal bipolar sheets for fuel cells
    Publication number: 20040224205
    Abstract: In a fuel cell stack, a bipolar separator plate having two joined together coextensive separator plate elements having perpendicularly disposed corrugated regions and forming a coolant chamber there between. By virtue of this arrangement, fuel and oxidant gases fed to the fuel cell stack have a cross-flow relationship. Internal stack manifolding is provided for distribution of a coolant to each of the coolant chambers.
    Type: Application
    Filed: May 5, 2003
    Publication date: November 11, 2004
    Inventors: Leonard G. Marianowski, Gerald J. Koncar, Qinbai Fan, Jeremy Chervinko
  • Proton exchange membrane fuel cell separator plate
    Patent number: 5942347
    Abstract: A gas impervious bi-polar separator plate for a proton exchange membrane fuel cell having at least one electronically conductive material in an amount in a range of about 50% to about 95% by weight of the separator plate, at least one resin in an amount of at least about 5% by weight of the separator plate, and at least one hydrophilic agent, where the electronically conductive material, the resin, and the hydrophilic agent are substantially uniformly dispersed throughout the separator plate.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: August 24, 1999
    Assignee: Institute of Gas Technology
    Inventors: Gerald J. Koncar, Leonard G. Marianowski