Patents by Inventor David E. Pitkanen

David E. Pitkanen 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).

  • Process for dielectric stenciled microcircuits
    Patent number: 4336320
    Abstract: The present invention is directed to a process for complex, high density microcircuits in which thick film dielectric pastes are photolithography patterned into high resolution stencils to produce complementary conductor circuitry patterns, the voids of the developed dielectric stencil are filled with thick film conductor paste, and then there is a cofiring of the conductor and the dielectric. With this new process the number of separate firing operations is reduced. The reduction in the number of firings is important in multilevel hybrid structures.
    Type: Grant
    Filed: March 12, 1981
    Date of Patent: June 22, 1982
    Assignee: Honeywell Inc.
    Inventors: John P. Cummings, Janice D. Makos, David E. Pitkanen