Patents by Inventor Eddie L. Wright

Eddie L. Wright 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 of removing a permanent photoimagable film from a printed circuit board
    Patent number: 5304252
    Abstract: A method to remove permanent photoimagable solder mask simultaneously from the insulating laminate and conductive metal traces of a printed circuit board comprising the steps of heating a photoimagable solder mask removing solution comprised of an aqueous alkaline solution, an organic penetrating and softening agent and a tarnish and corrosion inhibitor, contacting the solution with the permanent photoimagable solder mask on the printed circuit board, allowing the permanent photoimagable solder mask to soften, and removing the photoimagable solder mask removing solution and softened permanent photoimagable solder mask simultaneously from the insulating laminate and conductive metal traces of the circuit board by rinsing the board with water.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: April 19, 1994
    Assignee: Oliver Sales Company
    Inventors: Richard C. Condra, Paul C. Healey, Michael R. Cochren, Eddie L. Wright