Patents by Inventor R. M. Warner Jr.

R. M. Warner Jr. 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).

  • Complementary noise-immune logic
    Patent number: 4868904
    Abstract: Logic gates with large logic swings and large noise margins use complementary pull-up and pull-down enhancement-mode drivers. Connected between the input node of the logic gate and the control electrode of each of the drivers is a series combination of a level shifter (or constant-voltage element) and a current regulator (or constant-current element). The level shifter permits a voltage drop approximately independent of current, while the current regulator limits current flowing between the input node and the control electrode approximately independent of voltage.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: September 19, 1989
    Assignee: Regents of the University of Minnesota
    Inventors: R. J. Gravrok, R. M. Warner Jr.