Patents by Inventor Paul E. Drapkin

Paul E. Drapkin 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).

  • Stuffing channel unit for telephone PCM system
    Patent number: 4053715
    Abstract: A stuff system for converting a 50 KBS pulse train to standard 64 KBS provides a 3 bit 101 and 5 bit 01001 control bit stuffing code which tolerates both single and double errors without producing an out-of-frame condition.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: October 11, 1977
    Assignee: TRW Inc.
    Inventor: Paul E. Drapkin