Patents by Inventor Joachim Buhne

Joachim Buhne 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).

  • Apparatus and method for selective electrochemical etching
    Patent number: 4303482
    Abstract: An apparatus and method for selectively electrochemically etching a surface is described. The use of the apparatus and the related method allows the establishment of etched planar surface which may be inclined with respect to the original surface.The apparatus has a cathode and multiple connectors which attach to the workpiece whose surface is to be etched. When the apparatus is operated the potential of the connectors are set so that the cathode is at least as negative as the lowest potential of the connectors.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: December 1, 1981
    Assignee: International Business Machines Corporation
    Inventors: Joachim Buhne, Rolf Schafer, Axel Stoffel