Patents by Inventor Ryan Patrick Hallum

Ryan Patrick Hallum 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).

  • Fuel cell system with sensor
    Patent number: 6455181
    Abstract: A fuel cell system having one or more sensors is disclosed. The sensor(s) can detect the difference in the content of a gas (e.g., hydrogen) in an inlet stream and an outlet stream of the fuel cell system. The sensors can provide a signal to a controller that regulates the flow of the detected gas in the inlet stream.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: September 24, 2002
    Assignee: Plug Power, Inc.
    Inventor: Ryan Patrick Hallum