Patents by Inventor Roy Nuttall

Roy Nuttall 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: 4106051
    Abstract: A semiconductor device having an ohmic contact including a metal layer of molybdenum or tungsten on a first polycrystalline silicon layer, is provided with a second polycrystalline silicon layer on the metal layer, to prevent the subsequent oxidation of the metal layer.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: August 8, 1978
    Assignee: Ferranti Limited
    Inventors: Leslie Dormer, Roy Nuttall