Patents by Inventor Frank D. Jaskulski

Frank D. Jaskulski 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).

  • Detector for use with an automatic disconnect feature in a telephone answering machine
    Patent number: 5259022
    Abstract: In a telephone answering machine, a detector for a automatic disconnect function uses a first amplifier to detect, amplify, and invert small input signal changes, and second amplifier to detect large input signal changes and a logic arrangement responsive to the output signals of the first and second amplifiers to detect the presence of only the small input signal changes.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: November 2, 1993
    Assignee: Thomson Consumer Electronics, Inc.
    Inventors: Henry H. Kuok, John H. Livingston, Frank D. Jaskulski