Patents by Inventor Rolf Tiefenauer

Rolf Tiefenauer 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).

  • Protective coating for wood
    Patent number: 5238745
    Abstract: A protective coating for wood comprising a) an undercoat which penetrates the surface of the wood and contains a phenolic antioxidant, and b) a conventional top coat. The top coat preferably contains a light stabiliser.
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: August 24, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Andreas Valet, Daniel Rogez, Rolf Tiefenauer