Patents by Inventor Calvin C. Henning

Calvin C. Henning 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 improving durability of mirrors utilizing radiation curable coatings
    Patent number: 4745003
    Abstract: Disclosed is a method of coating the metal side of a mirror by applying to a reflective layer of metal adhered to a transparent glass sheet one or more adherent protective layers wherein the outermost protective layer is a cured coating formed from a liquid coating composition which is curable by exposure to ultraviolet light (UV). The UV curable liquid coating composition has a high degree of resistance to shrinkage upon curing.
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: May 17, 1988
    Assignee: PPG Industries, Inc.
    Inventors: Robert J. Sirkoch, Ken W. Niederst, Alan B. Weissberg, Paul P. Greigger, Calvin C. Henning