Patents by Inventor Dan Barbour

Dan Barbour 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).

  • Modified progressive impedance ladder network
    Patent number: 4990868
    Abstract: A modified progressive impedance ladder network has a plurality of cascaded resistive sections. Each of these sectiions has at least one resistive element and a single switch with values selected such that the section input impedance is larger than the output impedance of the preceding section.
    Type: Grant
    Filed: September 6, 1989
    Date of Patent: February 5, 1991
    Assignee: Rockwell International Corporation
    Inventor: Dan Barbour