Patents by Inventor Douglass A. Pietila

Douglass A. Pietila 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).

  • Trenching techniques for forming channels, vias and components in substrates
    Patent number: 5219787
    Abstract: Trenching techniques for forming a channel partially through and a via completely through the insulating layer of a substrate are disclosed. With additional steps the channel can form an electrically conductive line, an electrode of an integrated capacitor, or an optical waveguide.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: June 15, 1993
    Assignee: Microelectronics and Computer Technology Corporation
    Inventors: David H. Carey, Douglass A. Pietila, David M. Sigmond