Patents by Inventor Bernd Lindinger

Bernd Lindinger 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).

  • Etching solution
    Patent number: 6129858
    Abstract: An electrolytically reclaimable etching solution for etching circuit boards and mold parts of copper and copper-based alloys, with a content of copper tetrammine sulfate, ammonia, ammonium sulfate, ammoniachloride, if necessary ammonium nitrate, and also a catalyzer for raising the etching rate. According to the invention, such an etching solution excels through a content of vanadium or a vanadium compound as a catalyzer in a concentration of 1 mg to 99 mg/l of etching solution, calculated as vanadium.
    Type: Grant
    Filed: August 6, 1990
    Date of Patent: October 10, 2000
    Assignee: Elo-chem Atztechnik GmbH
    Inventor: Bernd Lindinger