Patents by Inventor Gunter Woldt

Gunter Woldt 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 the preliminary treatment of plastic surfaces for electroplating
    Patent number: 3959564
    Abstract: In the pickling and activation of plastic surfaces with a chromo-sulfuric acid bath containing a noble metal chloride, the bath is boiled prior to use for a period of time sufficient to eliminate substantially all free chlorine present. Thereafter the plastic surface is pickled and activated in the bath, and then chemical metal plated.
    Type: Grant
    Filed: February 6, 1974
    Date of Patent: May 25, 1976
    Assignee: Schering Aktiengesellschaft
    Inventors: Kurt Heymann, Gunter Woldt