Patents by Inventor John Anthony Kerr

John Anthony Kerr 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).

  • Semiconductor devices
    Patent number: RE28704
    Abstract: A method for making an IGFET is described. The method utilizes impurity ion implantation into the surface channel to determine the conductivity thereof. The advantages include special impurity profiles providing improved performance, better control over important parameters such as threshold voltage, the manufacture of improved tetrodes, and the manufacture of improved ICs using for example N- and P-channel devices, and depletion and enhancement devices combined in a single chip.
    Type: Grant
    Filed: March 22, 1974
    Date of Patent: February 3, 1976
    Assignee: U.S. Philips Corporation
    Inventors: David Phythian Robinson, Julian Robert Anthony Beale, John Martin Shannon, John Anthony Kerr, Mukunda Behari Das