Patents by Inventor Richard L. Guthrie

Richard L. Guthrie 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).

  • Program substitution
    Patent number: 8011012
    Abstract: Multiple keys are distributed to multiple clients. The keys provide access to media content. A group of clients are identified to receive substituted media content during a predetermined time period. Modified keys are generated that identify the substituted media content and the predetermined time period. The modified keys are distributed to the group of clients. The modified keys cause the group of clients to receive the substituted media content during the predetermined time period.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: August 30, 2011
    Assignee: Microsoft Corporation
    Inventors: Kevin T. Carle, David L. de Heer, Majd Bakar, John H. Grossman, IV, Richard L. Guthrie