Patents by Inventor Bernd E. Grabner

Bernd E. Grabner 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).

  • Sliding shutters of basic refractory material
    Patent number: 4175974
    Abstract: Thermal stress-resistant sliding shutters for discharging molten metal from vessels are formed by chemically bonding basic refractory materials having an MgO content of 55-98.5%.
    Type: Grant
    Filed: July 19, 1977
    Date of Patent: November 27, 1979
    Assignee: Oesterreichisch-Amerikanische Magnesit Aktiengesellschaft
    Inventors: Bernd E. Grabner, Mario G. Heinricher