Patents by Inventor John L. Prosser

John L. Prosser 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).

  • Metal treating
    Patent number: 4199488
    Abstract: An auto-phoretic aqueous acidic coating composition is free of fluoride and hydrogen peroxide and contains an organic film forming resin, phosphate and a nitrobenzoic acid or derivative thereof. The composition imparts corrosion resistance when contacted with a metal surface.
    Type: Grant
    Filed: May 1, 1978
    Date of Patent: April 22, 1980
    Assignee: Oxy Metal Industries Corporation
    Inventors: Dennis B. Freeman, John L. Prosser