Patents by Inventor Michel G. A. Duquenne

Michel G. A. Duquenne 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).

  • Closed-loop telecommunication system
    Patent number: 4277843
    Abstract: This closed loop multiplex communication system uses a timing unit to establish a general multiplex format consisting of 1024 frames in a multiframe. Each subscriber station transmits one message bit per frame (i.e. 1024 message bits per multiframe), but transmits only 32 signalling bits per multiframe (i.e. the eight-bit non-message blocks in four corresponding frames).
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: July 7, 1981
    Assignee: U.S. Philips Corporation
    Inventors: Michel G. A. Duquenne, Guy A. J. David, Jean-Claude Grima, Jacques L. Daguet