Patents by Inventor Richard A. Neish

Richard A. Neish 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).

  • Method for treating coated ferrous substrates
    Patent number: 3967984
    Abstract: An aqueous solution of 2.0 to 12.0 gm/l hexavalent chromium and 0.7 to 4.0 gm/l of sodium or ammonium bifluoride, adjusted to a pH of 2.7 to 5.5, is applied to coated (eg. Zn) ferrous substrates, metered to result in a final thickness of 0.8 to 2.0 mg of Cr per square foot of substrate surface, and thereafter dried to remove physically bound water.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: July 6, 1976
    Assignee: United States Steel Corporation
    Inventors: Lawrence E. Helwig, Richard A. Neish