Patents by Inventor Elaine L. Evans

Elaine L. Evans 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).

  • Cyanamide salts of non-lead metals as corrosion inhibitive pigments in mirror back coatings
    Patent number: 4707405
    Abstract: Compositions of the invention comprise an organic film-forming resin and a cyanamide salt of a non-lead metal. The composition, when applied to a thin metallic film, inhibits degradation of the thin metallic film as compared to the composition without calcium cyanamide. Processes comprising the step of applying a composition of the invention to a thin metallic film and articles comprising a thin metallic film and a layer of a hardened composition of the invention are also disclosed.
    Type: Grant
    Filed: January 2, 1985
    Date of Patent: November 17, 1987
    Assignee: PPG Industries, Inc.
    Inventors: Elaine L. Evans, James E. Graham, Alan B. Weissberg