Patents by Inventor Tak Hung

Tak Hung 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).

  • Gate charge neutralization for insulated gate field-effect transistors
    Patent number: 4116721
    Abstract: Positive charges that appear in the gate silicon oxide insulation of a silicon insulated gate field-effect transistor device may be controlled through neutralization by injecting electrons in to the gate oxide from the substrate after the device is complete and metallized by irradiating the back of the substrate with light in the presence of a voltage bias.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: September 26, 1978
    Assignee: International Business Machines Corporation
    Inventors: Tak Hung Ning, Carlton Morris Osburn, Hwa Nien Yu