Patents by Inventor Charles Rygula

Charles Rygula 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).

  • Patent number: 6973309
    Abstract: A method and system for re-direction and handoff for pre-paid mobile services in third generation (“3G”) networks. A handoff marker is created and used for wireless mobile nodes such as Mobile Internet Protocol (“Mobile IP”) nodes. The handoff markers allow the wireless mobile nodes to use pre-paid mobile services, have active communications sessions suspended and re-directed to a registration server when purchased pre-paid mobile services run-out. The registration server allows the wireless mobile node to electronically purchase additional pre-paid mobile services and immediately resume a suspended communications session. The handoff markers also allows network devices in a mobile network to determine between initiation of a new communications session or a hard handoff of an existing communication session, without adversely affecting pre-paid billing services.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: December 6, 2005
    Assignee: UTStarcom, Inc.
    Inventors: Charles Rygula, Chandra Warrier, Michael S. Borella