Patents by Inventor John D. Ballentine

John D. Ballentine 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).

  • Heat and light reflecting spandrel
    Patent number: 3951525
    Abstract: Durable glass spandrels are provided with transparent light and heat reflective coatings on the inwardly glazed glass surface and with substantially opaque ceramic enamel coatings adhered to the transparent light and heat reflective coatings. The spandrels are light and heat reflecting and provide for aesthetically matched vision and spandrel areas in curtainwall construction by utilizing a ceramic enamel coating which reflects light in the same spectral region of light transmitted by the transparent coating and glass combination.
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: April 20, 1976
    Assignee: PPG Industries, Inc.
    Inventor: John D. Ballentine