Patents by Inventor Pietro Alois Zafiropulo

Pietro Alois Zafiropulo 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).

  • Synchronous disconnection and rearrangement
    Patent number: RE28958
    Abstract: This is a communication loop system having a bidirectional transmission capability between terminals. The system is comprised of switching units which allow isolation of a loop segment and the establishment of an operable folded loop for the remaining non-isolated loop portions of the system. In addition, the communication loop system comprises devices for enabling synchronous switchover operation during reconfiguration of the loop. This synchronous switchover insures that no data stream interruption or disturbance occurs for the units or terminals not attached to the disconnected loop segment.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: September 7, 1976
    Assignee: International Business Machines Corporation
    Inventors: Pietro Alois Zafiropulo, Franz Xaver Zihlmann