Patents by Inventor Thomas A. DeMercurio

Thomas A. DeMercurio 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 producing planar field emission structure
    Patent number: 5458520
    Abstract: A method is available for producing planar field emission elements such as used in camcorder view finder screens, instrument display panels, computer monitors, television displays and similar systems. Prior known methods are simplified to avoid the need for precision milling while controlling precise via hole diameters and producing wider via passage to eliminate shorting. The method involves the use of electroplating steps to reduce etched via hole diameters, using different metals to permit selective separation.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: October 17, 1995
    Assignee: International Business Machines Corporation
    Inventors: Thomas A. DeMercurio, Kwong H. Wong, Roy Yu
  • Zero undercut etch process
    Patent number: 5294520
    Abstract: A process in the fabrication of wiring patterns on ceramic or polymeric substrates precisely controls the cross-sectional dimensions of the metallization that constitute the wiring patterns. A single etch process defines thin film conductors on a substrate without loss to the conductor cross-section and provides enhanced thin film design flexibility. The zero undercut etch process uses photoresists defining the metal patterns to completely protect the metal patterns during the subetch.
    Type: Grant
    Filed: August 25, 1992
    Date of Patent: March 15, 1994
    Assignee: International Business Machines Corporation
    Inventors: Thomas A. DeMercurio, Richard J. Hetherington, Robert A. Meyen, Scott A. Sands