Patents by Inventor Donald J. Derkach

Donald J. Derkach 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).

  • Freeze clock circuit
    Patent number: 4489422
    Abstract: A circuit for controlling the application of a timing pulse to a count down chain where the contents of the count down chain are read-out in stages and asynchronously with respect to the application of the timing pulse. The control circuit ensures that a timing pulse is not applied during the read-out of the contents of the count down chain.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: December 18, 1984
    Assignee: RCA Corporation
    Inventors: Joseph P. Paradise, Donald J. Derkach