Patents by Inventor Alfred Scheithauer

Alfred Scheithauer 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 and arrangement for etching an etch material consisting at least partly of metal
    Patent number: 5071508
    Abstract: The invention concerns a method of etching an etch material consisting at least partly of metal and an arrangement for implementing that method.According to the invention, the etchant is applied through jet assemblies arranged perpendicularly to each other on the top and the bottom side of the etch material. During the passage of the etch material, the spray pressure at the jet assemblies or the jets may be set to constant values and/or be individually controlled as a function of the quantity of metal to be etched off the top and the bottom side. The invention is particularly suitable for etching circuit boards, whose conductors on the top and the bottom side are arranged perpendicularly to each other.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: December 10, 1991
    Assignee: International Business Machines Corporation
    Inventors: Alfred Scheithauer, Wolfgang Alberth, Gert Pohl, Herbert Ziegler
  • Spray etching apparatus with automatic individually controllable etching jets
    Patent number: 5002627
    Abstract: The invention concerns a method of etching an etch material consisting at least partly of metal and an arrangement for implementing that method. According to the invention, the etchant is applied through jet assemblies arranged perpendicularly to each other on the top and the bottom side of the etch material. During the passage of the etch material, the spray pressure at the jet assemblies or the jets may be set to constant values and/or by individually controlled as a function of the quantity of metal to be etched off the top and the bottom side. The invention is particularly suitable for etching circuit boards, whose conductors on the top and the bottom side are arranged perpendicularly to each other.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: March 26, 1991
    Assignee: International Business Machines Corporation
    Inventors: Alfred Scheithauer, Wolfgang Alberth, Gert Pohl, Herbert Ziegler