Patents by Inventor Vincent C. Hamacher

Vincent C. Hamacher 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).

  • Port logic for a communication bus system
    Patent number: 4292623
    Abstract: Apparatus and method for enabling asynchronous, collision-free communication between ports on a local shared bus network which is efficient in the use of bus bandwidth and which, in one embodiment, provides a bounded, guaranteed time to transmission for each port.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: September 29, 1981
    Assignee: International Business Machines Corporation
    Inventors: Kapali P. Eswaran, Vincent C. Hamacher, Gerald St. Shedler