Patents by Inventor Mark J. Lachiw

Mark J. Lachiw 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).

  • Image trap filter circuit
    Patent number: 4835608
    Abstract: A varactor diode tuner includes a tunable image frequency trap in its input circuit. The trap is part of a tunable bandpass filter and forms a tapped capacitance matching network for UHF television signal carrier frequencies and a low impedance shunt at image frequencies. The trap is formed of discrete capacitors, an inductor and a tunable varactor diode.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: May 30, 1989
    Assignee: Zenith Electronics Corporation
    Inventors: Mark J. Lachiw, Peter Strammello