Patents by Inventor Edward T. Spacer

Edward T. Spacer 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).

  • Method for producing high resolution etched circuit patterns from clad laminates
    Patent number: 4654116
    Abstract: A method for producing high resolution etched circuit patterns from a metal clad laminate of a conductive species on a nonconductive substrate is provided. The laminate is etched with an etchant solution for the conductive species to form a circuit pattern. The etched laminate is contacted with an oxidizing agent and aqueous acid to remove redeposited conductive species from the exposed substrate adjacent the circuit pattern. The side walls of the resulting circuit pattern are substantially vertical and free of "halo".
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: March 31, 1987
    Assignee: American Electronic Laboratories, Inc.
    Inventor: Edward T. Spacer