Patents by Inventor Darrell E. Frazier

Darrell E. Frazier 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).

  • NMOS driver circuit for CMOS circuitry
    Patent number: 4956691
    Abstract: A driver circuit, which uses two serially connected enhancement mode n-channel MOS transistors in which the pullup transistor of the two transistors has no p-type implant in the channel region thereof and the pulldown transistor of the pair is a normlal enhancement mode transistor having a p-type threshold control implant in the channel thereof, is useful as a driver circuit for CMOS circiuts. The pullup transistor is designed to have a threshold of about 0 volts at zero back gate bias and the pulldown transistor is designed to have a threshold voltage of about 0.7 volts at zero back gate bias.
    Type: Grant
    Filed: March 24, 1989
    Date of Patent: September 11, 1990
    Assignee: Delco Electronics Corporation
    Inventors: Jeffrey L. Culley, Darrell E. Frazier, Anthony E. Frisch