Patents by Inventor Otto Vohler

Otto Vohler 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).

  • Graphitization furnace
    Patent number: 4015068
    Abstract: Furnace for the graphitization of carbon bodies in which carbon bodies arranged in continuous row are clamped between two electrodes and heated up to the graphitization temperature by electric resistance heating. The carbon bodies are surrounded by movable shell-shaped walls and the space between the bodies and the walls contains no granular isolation materials. The furnace permits the graphitization of carbon bodies with smaller energy consumption and a shorter time.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: March 29, 1977
    Assignee: Sigri Elektrographit GmbH
    Inventor: Otto Vohler