Patents by Inventor Christopher S. Sontag

Christopher S. Sontag 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: 5991795
    Abstract: A method for exchange of information between a requesting communication unit and a responding communication unit through an intervening communication unit. The method comprises the steps of transmitting a request for a predetermined information element to the responding communication unit using a first format, intercepting the request for the predetermined information element, searching resources local to the intervening communication unit for the requested predetermined information element, and transmitting the requested predetermined information element to the requesting communication unit.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: November 23, 1999
    Assignee: emWare, Inc.
    Inventors: Michael L. Howard, Christopher S. Sontag