Patents by Inventor Richard Wayne Harris

Richard Wayne Harris 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).

  • Digitally controlled variable conductance
    Patent number: 4009400
    Abstract: A digitally tuned active filter is disclosed. The filter is tunable by digitally controlling the variable conductance which comprises two resistors, one of which is in series with a field-effect transistor switch and those two in parallel with the other resistor. The field-effect transistor switch is switched by a digitally controlled variable duty cycle generator.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: February 22, 1977
    Assignee: Lockheed Missiles & Space Company, Inc.
    Inventors: Richard Wayne Harris, Harry Thomas Lee