Patents by Inventor Jean Cellmer

Jean Cellmer 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 for locating a cellular radiocommunication mobile station, and equipment for implementing the method
    Patent number: 5850609
    Abstract: At least one fixed beacon is associated with a user of a mobile station and emits, with a range (r) substantially smaller than the characteristic dimension (R) of a cell, a radio signal specific to said user. When the mobile station detects the radio signal emitted by the beacon, the station addresses a signal to the communication network indicating that it is within range of the beacon.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: December 15, 1998
    Assignee: Nortel Matra Cellular
    Inventors: Ian Sugarbroad, Jean Cellmer, Alain Ohana, Phillippe Duplessis