Patents by Inventor Stuart W. Pretzman

Stuart W. Pretzman 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).

  • Non-disruptive session recovery
    Patent number: 4975914
    Abstract: A method of operating a communication system which includes a number of host systems each communicating via sessions with other devices over different connections and in which the sessions assigned to a failed connection are suspended for a first and second time period and non-destructively moved to an alternate connection when a unique command is issued by one of the host systems and received by a control unit involved in the failed connection.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: December 4, 1990
    Assignee: International Business Machines Corporation
    Inventors: James L. Ashton, Robert T. Gibbs, Michael F. Gierlach, James P. Gray, Jeffrey G. Knauth, Guy Platel, Stuart W. Pretzman, Lawrence E. Troan