Patents by Inventor C. H. Jolissaint

C. H. Jolissaint 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).

  • Answer supervision and service selection
    Patent number: 5265157
    Abstract: Apparatus and method for communicating a call answered event and other communication services selection information to a call originating device (telephone). Tone signalling technology (DTMF) is used to indicate call progress. DTMF signals are generated by the switching system or associated telephony equipment.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: November 23, 1993
    Assignee: International Business Machines Corporation
    Inventors: C. H. Jolissaint, Gregg W. Kerlin