Patents by Inventor J. William Dockrey

J. William Dockrey 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).

  • Patent number: 4812418
    Abstract: An electronic process is provided for creating a small dimensioned pattern in a semiconductor device. In one embodiment, the pattern functions to electrically separate two areas of the substrate by less than a micron. A lithographic mask which does not have to utilize dimensions as small as those being formed on the semiconductor device is used to form a predetermined pattern with at least one separation region by irradiating and developing a photoresist material. A layer of buffer material below the photoresist material reacts with a reactive ion etch to form a separation area with sloping sides comprised of polymer filaments produced from the reaction. The sloped sides of the separation region provide a separation dimension in the substrate of the semiconductor structure which is significantly smaller than a corresponding dimension required to be implemented on the lithographic mask.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: March 14, 1989
    Assignee: Motorola, Inc.
    Inventors: James R. Pfiester, Louis C. Parrillo, J. William Dockrey