Patents by Inventor Michael Kenneth John Chapman

Michael Kenneth John Chapman 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).

  • Railway vehicle detection
    Patent number: 8157218
    Abstract: A method is disclosed of detecting a railway vehicle, comprising using the time difference between receiving at first and second points a signal sent from the vehicle at a given time to produce an indication of the location of the vehicle.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: April 17, 2012
    Assignee: Westinghouse Brake and Signal Holdings Limited
    Inventors: Charles Edward Riley, Michael Kenneth John Chapman