Patents by Inventor David Surratt

David Surratt 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).

  • Furnaces having dual gas screens and methods for operating the same
    Publication number: 20050042559
    Abstract: Furnace assemblies are provided including a furnace defining an internal process chamber extending therethrough. A first gas screen is coupled to the furnace. The first gas screen is configured to introduce a first gas into the internal process chamber at a first end of the furnace. A second gas screen is positioned adjacent to the first gas screen at an opposite end of the first gas screen from the furnace. The second gas screen is configured to introduce a second gas to provide a seal for the first end of the furnace. The furnace may be a draw furnace and the process chamber may be an internal draw chamber.
    Type: Application
    Filed: October 1, 2004
    Publication date: February 24, 2005
    Inventors: Lindwood Bird, John Jewell, David Surratt, Zhenming Wu