Patents by Inventor David N. Casey

David N. Casey 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).

  • MOS/bipolar device
    Patent number: 5440164
    Abstract: An integrated device is provided which has a bipolar transistor as an output stage. The bipolar transistor is driven by a short channel metal oxide semiconductor field effect transistor. Such a device has a low on state voltage drop substantially irrespective of the potential supported by the device.
    Type: Grant
    Filed: April 6, 1994
    Date of Patent: August 8, 1995
    Assignee: Zetek plc
    Inventors: Adrian D. Finney, David N. Casey