Patents by Inventor John T. Fakler

John T. Fakler 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).

  • Composition for stripping solder and tin from printed circuit boards
    Patent number: 6258294
    Abstract: A composition and method for stripping tin and solder and the underlying tin-copper alloy from the copper substrate of a printed circuit board is presented. The liquid includes an aqueous solution of nitric acid in an amount sufficient to dissolve solder and tin, a source of ferric ions in an amount sufficient to dissolve the tin-copper alloy, and a source of halide ions in an amount sufficient to significantly improve the resistance between printed circuits.
    Type: Grant
    Filed: October 1, 1997
    Date of Patent: July 10, 2001
    Assignee: Morton International, Inc.
    Inventors: Todd Johnson, II, John T. Fakler
  • Apparatus and method for replenishing developer
    Patent number: 5416552
    Abstract: A replenishing solution is mixed from liquid concentrate and tap water. Rather than measure the flow of liquids, apparatus measures static volumes of reagents, then transfers the reagents to a replenishing tank where they are mixed and brought to a predetermined temperature. Precise volumes are measured by weirs in each of the containers for water and concentrate. The replenishing solution is added to a developer in amounts determined by the pH of the developer. The electrode of a meter used for measuring pH are protected from scale or deposits by a sequestering agent, preferably EDTA, in the replenishing solution.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: May 16, 1995
    Assignee: Surface Tek, Inc.
    Inventor: John T. Fakler