Patents by Inventor Richard J. Parnell

Richard J. Parnell 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).

  • Comparator circuits
    Patent number: 4912420
    Abstract: Comparator means comprising a pair of comparators connected to a logic gate and bistable circuit, said comparators are connected in anti-phase with a common input and separate outputs the separate outputs are combined by the logic gate to produce a single switching signal which is used to trigger the bistable to produce an output signal.
    Type: Grant
    Filed: July 8, 1988
    Date of Patent: March 27, 1990
    Assignee: British Aerospace Public Limited Company
    Inventor: Richard J. Parnell