Patents by Inventor Josef Ruf

Josef Ruf 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).

  • Corrosion inhibiting coatings for steel
    Patent number: 4089690
    Abstract: The zinc salts of 5-nitroisophthalic acid and of mononitroterephthalic acid inhibit the corrosion of steel when applied in otherwise conventional organic coatings.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: May 16, 1978
    Assignee: BASF Farben & Fasern AG
    Inventors: Rudiger Pantzer, Josef Ruf