Patents by Inventor Robert F. Woodburn, Jr.

Robert F. Woodburn, Jr. 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).

  • Method for protecting extraction electrode during processing of Spindt-tip field emitters
    Patent number: 5921838
    Abstract: A method for protecting extraction electrodes (140) during processing of Spindt-tip field emitters (150, 155) includes the steps of: (i) depositing a parting layer (170) on the extraction electrodes (140) and in an interspace region (145) defined by the extraction electrodes (140), (ii) sharpening the Spindt-tip field emitters (150), (iii) depositing a layer (180) of emission-enhancing material on the sharpened field emitters (155) and on the parting layer (170), and (iv) removing the parting layer (170), thereby lifting off the emission-enhancing material from the extraction electrodes (140) and from the interspace region (145), but not from the sharpened field emitters (155).
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: July 13, 1999
    Assignee: Motorola, Inc.
    Inventors: Sung P. Pack, Patricia A. Norton, Robert F. Woodburn, Jr.