Patents by Inventor Dennis Conway Reedy

Dennis Conway Reedy 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).

  • Transistor-transistor-logic circuit
    Patent number: 4069428
    Abstract: Disclosed is a transistor-transistor-logic (TTL) circuit which is testable by D. C. Testing Techniques. The improvement includes a high impedance network for providing sufficient base drive to drive the output transistor into conduction when the malfunctioning input transistor fails to provide a turn-off logic level. The high impedance network can be a Schottky barrier diode and an epitaxial resistor connected in a series path between a potential supply and the base region of the output transistor.
    Type: Grant
    Filed: September 2, 1976
    Date of Patent: January 17, 1978
    Assignee: International Business Machines Corporation
    Inventor: Dennis Conway Reedy