Patents Represented by Attorney Les Birnbaum

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  • Pre-plate cleaning process
    Patent number: 5077176
    Abstract: Disclosed is a cleaning process for use primarily in the fabrication of printed circuit boards. Cleaning is done in-line with the coating and development of a photoresist layer. The process includes a spray cleaning and micro-etch, followed by the application of an anti-tarnish so that the boards can be stored prior to plating.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: December 31, 1991
    Assignee: AT&T Bell Laboratories
    Inventors: Thomas J. Baggio, Raymond C. Hladovcak, Robert W. Landorf