Patents by Inventor William G. Proffitt

William G. Proffitt 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 of defining film patterns on microelectronic substrates by air abrading
    Patent number: 4232059
    Abstract: A process is disclosed for delineating a patterned electroconductive coating on a substantially nonconductive substrate. The process can be used on substrates having a thickness in excess of 50 microinches. The process involves forming a substantially continuous electroconductive film on a substrate. An air abrasive resistant continuous mask film of metallic material is applied to the electroconductive film and etched to form masked and unmasked portions of the electroconductive film corresponding to the desired patterned coating. The unmasked portions of the electroconductive film are removed to leave the masked portions of the electroconductive film remaining on the substrate. The mask film can then be removed from the electroconductive film resulting in the desired pattern delineated in the electroconductive film on the substrate or the mask can remain in place and be used to form an integral part of the device formed with the substrate.
    Type: Grant
    Filed: June 6, 1979
    Date of Patent: November 4, 1980
    Assignee: E-Systems, Inc.
    Inventor: William G. Proffitt