Patents by Inventor Judd R. Murkland

Judd R. Murkland 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).

  • Patent number: 4417265
    Abstract: A high current lateral transistor suitable for intergrated circuit construction is fabricated in the form of a plurality of parallel transistors. Each transistor has an emitter surrounded by a closely confronting collector with the intervening semiconductor acting as the base region. Groups of parallel connected transistors are located on both sides of and distributed along a centerline which contains a number of diffused crossunder resistor elements. Each group of transistors is flanked on both sides by a base contact that is extended perpendicularly away from the centerline and connected by metalization to a resistor element. The resistor elements act to distribute the transistor base currents in a ballasting operation that promotes proper current distribution. Since the resistors are under the oxide the emitter and collector metalization can pass across the centerline region and parallel connect the individual transistors.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: November 22, 1983
    Assignee: National Semiconductor Corporation
    Inventors: Judd R. Murkland, James S. Congdon