Patents by Inventor John K. Currier

John K. Currier 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).

  • High temperature furnace for oxidizing atmospheres
    Patent number: 4885454
    Abstract: Tungsten heating elements are protected inside sapphire tubes which extend through an insulating shell made up of layers of successively more refractory material. Common plenums are provided at each end of the tubes and a controlled flow of a non-reactive gas is introduced into one of the plenums and is vented from the other plenum after passing through the tubes and protecting the heating elements.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 5, 1989
    Assignee: Centorr Associates, Inc.
    Inventors: Gerard H. Lavoie, Charles W. Miller, Jr., John K. Currier, Lionel F. Saunders, Daniel J. Leary