Patents by Inventor David George Yost

David George Yost 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 and apparatus for migrating subscribers between networks
    Publication number: 20020155834
    Abstract: Subscribers (103) are migrated from a first network (101) to a second network (115). Once the second network (115) is ready for traffic, connections from other networks (113) to the first network (101) are effectively transferred to the gateway mobile switching center (GMSC) (123) of the second network (115). All calls for the first network (101) and the second network (115) are directed to the GMSC (123) of the second network, which queries the home location register (HLR) (125) of the second network (115) for routing information. When a subscriber (117) is provisioned and activated at this HLR (125), the call is routed within the second network (115). When a subscriber (103) is not provisioned or activated at this HLR (125), the call is routed to the first network (101).
    Type: Application
    Filed: April 18, 2001
    Publication date: October 24, 2002
    Inventors: Scott Douglas Olmstead, Ben Champion Tang, Gregory Tretyak, David George Yost