Patents by Inventor Franz-Gerd Ricke

Franz-Gerd Ricke 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 for controlling the coating weight for strip-phosphating
    Patent number: 6461450
    Abstract: A process for controlling the layer weight during the phosphating of steel strip zinc-coated on one or both sides, using a phosphating solution which contains 1 to 6 g/l zinc ions and 10 to 30 g/l phosphate ions, characterized in that a Fe(II) ion content within the range of 3 to 100 mg/l is established in the phosphating solution. The higher the Fe(II) content, the lower is the layer weight. An alteration in the Fe(II) content of 3 to 20 mg/l results in an alteration in the layer weight of about 0.1 g/m2.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: October 8, 2002
    Assignees: Henkel Kommanditgesellschaft fur Aktien, Thyssen Krupp Stahl AG
    Inventors: Joerg Riesop, Franz-Gerd Ricke, Frank Panter, Dieter Geruhn, Hubertus Peters, Manfred Wessel, Andreas Klare