Patents by Inventor Edgar Gruninger

Edgar Gruninger 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).

  • Sealing process
    Patent number: 4648911
    Abstract: A novel seal process for sealing the surface of anodically oxidized metals in which an aqueous solution containing a first and second compound wherein the first compound is a nickel salt and the second compound is a fluoride is contacted onto the anodized surface, while the surface is still wet from the anodizing process, at a temperature below 30.degree. C. The process is particularly suitable for use in the sealing of anodically oxidized aluminum surfaces, in addition to other anodically oxidized, colored or uncolored metal surfaces.
    Type: Grant
    Filed: May 1, 1984
    Date of Patent: March 10, 1987
    Assignee: FFA Flug-und Fahrzeugwerke AG
    Inventor: Edgar Gruninger