Patents by Inventor Gary Wayne Leopold

Gary Wayne Leopold 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 validating special service calls having different signaling protocols
    Patent number: 5640446
    Abstract: The present invention telecommunications system provides validation of authorization codes input by a user for placing a call from a service area of a first telecommunications service provider with a calling card issued by another telecommunications service provider. The present invention allows the subscriber to place a special service call irrespective of whether the signaling protocol of the first service provider is different from the service provider to which the subscriber is a customer of. If the protocol of one telecommunications service provider is indeed different from the other service provider, a gateway residing in an intelligent service network node would convert the signaling protocol of the first service provider into a signaling protocol that is compatible with the other service provider.
    Type: Grant
    Filed: May 1, 1995
    Date of Patent: June 17, 1997
    Assignee: MCI Corporation
    Inventors: David Alan Everett, Gary Wayne Leopold, George Michael Kult, Lee C. Seydel, Padmanabhan Vijay