Patents by Inventor Frederick J. Dudek

Frederick J. Dudek 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).

  • Process for dezincing galvanized steel
    Patent number: 5779878
    Abstract: A process for removing zinc from galvanized steel. The galvanized steel is immersed in an electrolyte containing at least about 15% by weight of sodium or potassium hydroxide and having a temperature of at least about 75.degree. C. and the zinc is galvanically corroded from the surface of the galvanized steel. The material serving as the cathode is principally a material having a standard electrode potential which is intermediate of the standard electrode potentials of zinc and cadmium in the electrochemical series.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: July 14, 1998
    Assignee: Metal Recovery Industries (US) Inc.
    Inventors: William A. Morgan, Frederick J. Dudek, Edward J. Daniels