Patents by Inventor Walter Earl Utz

Walter Earl Utz 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).

  • Prevention of water staining of aluminum
    Patent number: 4122217
    Abstract: This invention relates to a method for protecting aluminum and aluminum alloy products against water staining. The method involves applying a continuous film of a protective composition to the surface of the aluminum product. The protective compositions useful for the invention are blends or reaction products of a polybasic acid and a partial ester of a polyol.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: October 24, 1978
    Assignees: Emery Industries, Inc., Reynolds Metals Co.
    Inventors: Robert J. Sturwold, Walter Earl Utz, Nicholas Christ, William R. Ford, Jr., George P. Koch