Patents by Inventor Margaret A. Sun

Margaret A. Sun 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).

  • Vehicle navigation using timed turn and timed lane restrictions
    Patent number: 5862509
    Abstract: Methods for planning an optimum vehicle route from a selected origin to a selected destination with a selected departure time, taking account of the presence of timed turn restrictions and/or timed lane restrictions. Separate methods are provided for recalculation of a suitable route remainder, where an unanticipated timed turn or timed lane restriction or other traffic obstruction, such as a vehicle accident, is encountered enroute. Computations for an optimum route can be performed at the vehicle or at a station that communicates with the vehicle.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: January 19, 1999
    Assignee: Zexel Corporation
    Inventors: Simon Desai, Margaret A. Sun