Patents by Inventor Leonard J. Duncan

Leonard J. Duncan 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).

  • Automatic vehicle recognition and customer automobile diagnostic system
    Patent number: 5557268
    Abstract: The present invention is a system and method for identifying a vehicle for the purpose of displaying diagnostic information to the driver. Each vehicle includes a transponder that transmits an encoded character sequence that is unique to that vehicle. In this way vehicle diagnostic measurements made at the establishment entrance can be associated with the vehicle, and displayed to the customer when the vehicle is recognized again at a service area.
    Type: Grant
    Filed: February 24, 1995
    Date of Patent: September 17, 1996
    Assignee: Exxon Research and Engineering Company
    Inventors: Gerard J. Hughes, Leonard J. Duncan, David P. Goshorn, James P. Stokes