Patents by Inventor Chockkalingam Karrupaiah

Chockkalingam Karrupaiah 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 of operating a fuel cell system
    Patent number: 6537690
    Abstract: Methods of operating a fuel cell system are disclosed. The methods can include flowing an anode gas through a fuel cell without flowing a cathode gas through the fuel cell while placing a voltage across the fuel cell.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: March 25, 2003
    Assignee: Plug Power Inc.
    Inventors: Chockkalingam Karrupaiah, James McElroy