Patents by Inventor Guy R. Freeman

Guy R. Freeman 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).

  • Trench isolation process
    Patent number: 5206182
    Abstract: A trench isolation process for bipolar and/or MOS circuits employs trench isolation with the trenches extending from an isolation region just below the surface down to and through a buried layer having the same dopant polarity as the isolation regions, so that inversion along the sidewalls of the trench is prevented.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: April 27, 1993
    Assignee: United Technologies Corporation
    Inventor: Guy R. Freeman
  • Schottky diode for integrated circuits
    Patent number: 4965643
    Abstract: An improved Schottky diode may be placed above an insulating layer such as the field oxide instead of within an epitaxial layer. The forward voltage, dynamic resistance and breakdown voltage may all be tailored.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: October 23, 1990
    Assignee: United Technologies Corporation
    Inventor: Guy R. Freeman