Patents by Inventor Ken DelGrande

Ken DelGrande 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).

  • Symmetric edge true/complement buffer/inverter and method therefor
    Patent number: 5140174
    Abstract: The present invention is directed to a buffer/inverter which generates symmetric and complementary output signals from a single input signal. The device employs four inverters having similar switching speeds. The true output signal is generated by passing the input signal through two inverters. The complement output signal is generated by passing the true output signal through a third inverter, passing the input signal through a fourth inverter and coupling the outputs of the third and fourth inverters.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: August 18, 1992
    Assignee: Hewlett-Packard Co.
    Inventors: Peter Meier, Ken DelGrande