Patents by Inventor Robert H. Balnpied

Robert H. Balnpied 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 of foaming asphalt and products produced thereby
    Patent number: 5405882
    Abstract: A process of foaming asphalt comprises mixing sodium hydrogen carbonate with asphalt melted to a liquid state. The mixing yields carbon dioxide and water. The carbon dioxide gas foams the molten asphalt, and the foaming is enhanced by the boiling of the water. The rate of addition of the sodium hydrogen carbonate, and the temperature of the asphalt, are controlled in accordance with the desired specific gravity of the resultant foamed asphalt. The sodium hydrogen carbonate is added at a rate in a range of from about 2.0% by weight to about 6.0% by weight. The asphalt is melted at a temperature in a range from about 212.degree. F. to about 500.degree. F. The foamed asphalt is used, inter alia, by depositing the foamed asphalt on a substrate.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: April 11, 1995
    Assignee: Atlas Roofing Corporation
    Inventor: Robert H. Balnpied