Patents by Inventor Edmund Glenn Benjamin

Edmund Glenn Benjamin 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: 5733466
    Abstract: Electrodepositing a metallurgy such as gold on to printed circuit board features. The methods include electrolessly depositing a copper layer over the surface of the printed circuit board. This is followed by applying a layer of photoresist atop the electroless copper, and exposing and developing the photoresist to uncover areas to be etched, leaving behind the specific features to be plated. By this expedient the remaining copper forms a commoning layer. The remaining photoresist is stripped to uncover the copper commoning layer, and a second layer of photoresist is applied atop the partially etched copper layer. This layer of photoresist is exposed and developed to uncover the features to be plated. These features are then plated with the metallurgy of choice. The photoresist is then stripped off and the electroless copper layer can remain if needed for further processing or be microetched off without harming copper traces that may exist below the electroless copper layer.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: March 31, 1998
    Assignee: International Business Machines Corporation
    Inventors: Biebele Opubo Benebo, Edmund Glenn Benjamin, Robert Douglas Edwards, John Joseph Konrad, Timothy Leroy Wells, Jerzy Maria Zalesinski