Patents by Inventor Robert J. Charles

Robert J. Charles 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).

  • Phantom mobile-identification number method and apparatus
    Patent number: 5579376
    Abstract: A method and apparatus for changing the mobile identification number of a cellular telephone unit to reflect a local network planning area number, including a cellular telephone unit having a microprocessor and associated data storage. The microprocessor is programmed to interrogate the cellular telephone unit to obtain the local system identification number. The network planning area number corresponding to the system identification number is included as a part of the mobile identification number, thereby establishing a local cellular system number, such that the cellular telephone unit appears as a local unit to enable calls to be pre-validated by the local cellular system. Both the cellular telephone unit and the cellular system determine the local cellular system number independently. In response to an incoming call for the cellular telephone unit, the local cellular system pages the cellular telephone unit using the local cellular system number.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: November 26, 1996
    Assignee: Highwaymaster Communications, Inc.
    Inventors: William C. Kennedy, III, Robert J. Charles
  • Phantom mobile identification number method and apparatus
    Patent number: 5454027
    Abstract: A method and apparatus for changing the mobile identification number of a cellular telephone unit to reflect a local network planning area number, including a cellular telephone unit having a microprocessor and associated data storage. The microprocessor is programmed to interrogate the cellular telephone unit to obtain the local system identification number. The network planning area number corresponding to the system identification number is included as a part of the mobile identification number such that the cellular telephone unit appears as a local unit to enable calls to be pre-validated by the local cellular system.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: September 26, 1995
    Assignee: HM Holding Corporation
    Inventors: William C. Kennedy, III, Robert J. Charles