Patents by Inventor Winston L. Tennies

Winston L. Tennies 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).

  • Shaft furnace for production of iron carbide
    Patent number: 5618032
    Abstract: Apparatus for the production of iron carbide in a shaft furnace, by reacting a carbon containing reducing gas as the process gas with particulate metal oxide material for an extended residence time at low temperature, including residence time and operating temperature controls. The resulting iron carbide product is also disclosed.
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: April 8, 1997
    Assignee: Midrex International B.V. Rotterdam, Zurich Branch
    Inventors: David C. Meissner, Winston L. Tennies
  • Iron carbide production in shaft furnace
    Patent number: 5437708
    Abstract: A method and apparatus for the production of iron carbide in a shaft furnace, by reacting a carbon containing reducing gas as the process gas with particulate metal oxide material for an extended residence time at low temperature.
    Type: Grant
    Filed: May 4, 1994
    Date of Patent: August 1, 1995
    Assignee: Midrex International B.V. Rotterdam, Zurich Branch
    Inventors: David C. Meissner, Winston L. Tennies
  • Reactor dryer apparatus
    Patent number: 4172328
    Abstract: Apparatus for contacting a packed bed of particulate material with a treating gas includes a downwardly converging bin, hot gas distributors and a cooling gas distributor. The method whereby the apparatus is used as a reactor dryer to treat particulate sponge iron is also disclosed.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: October 30, 1979
    Assignee: Midrex Corporation
    Inventors: Robert M. Escott, Winston L. Tennies, Gilbert Y. Whitten, Jr.