Patents by Inventor James A. Sutherland

James A. Sutherland 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).

  • Process for improving corrosion resistance of zinc or cadmium plated metal articles
    Patent number: 4657599
    Abstract: A process for improving corrosion resistance of a metal article plated with zinc or cadmium includes coating the plated article with a chromium solution to provide the article with a chromate coating having a yellow to olive-drab color, and immersing the chromated article in a silicate solution for a sufficient time to cause the article to assume an acceptable white or grey color and also increase its corrosion resistance.
    Type: Grant
    Filed: October 21, 1985
    Date of Patent: April 14, 1987
    Assignee: Torcad Limited
    Inventor: James A. Sutherland