Patents by Inventor Allan Benjamin Ewart

Allan Benjamin Ewart 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).

  • System and method of automatic call barring in a radio telecommunications network
    Patent number: 5978670
    Abstract: A system for reducing fraudulent use of a mobile telephone number in a radio telecommunications network. The system automatically bars call originations from the mobile telephone if the mobile telephone does not register with the network for a predetermined time period, or if the mobile telephone does not originate a call for a second predetermined time period. The system determines when a mobile telephone originates a call, measures a predetermined time period with a timing mechanism, and starts the timing mechanism when the mobile telephone originates a first call. The system then determines whether a second call originated from the mobile telephone during the predetermined time period and restarts the timing mechanism at the time that the mobile telephone originates a second call upon determining that the second call originated from the mobile telephone during the predetermined time period.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: November 2, 1999
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Stefano Casoli, Allan Benjamin Ewart, David Spies, Ghassan Assi