Patents by Inventor David Glenn Summerfelt

David Glenn Summerfelt 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).

  • Global wireless prepaid roaming
    Patent number: 6684072
    Abstract: A global prepaid roaming services method and apparatus is described in which a roaming phone located in a first region places an outgoing call to a destination party in a second region, and responsive to placing the call, a service processing node (SPN) establishes a first call connection between the roaming phone and the SPN, a second call connection between the SPN and the destination party is established and the SPN bridges the first and second call connections to establish a call connection between the roaming phone and the destination party.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: January 27, 2004
    Assignee: Level Z, L.L.C.
    Inventors: Dinesh Kashinath Anvekar, Bhaskarpillai Gopinath, David Glenn Summerfelt, Sridhar Sundaram