Patents by Inventor Norbert Berger

Norbert Berger 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).

  • Calcining furnace with gas-permeable wall structure
    Patent number: 4392821
    Abstract: A calcining kiln for burning limestone or similar mineral raw material is formed with a wall structure which is gas-permeable at least in a region adjacent the openings of burners extending to the interior of the kiln with a compressed gaseous medium being supplied through the gas-permeable wall structure toward the interior of the kiln.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: July 12, 1983
    Assignee: Maerz Ofenbau AG
    Inventors: Erwin Fussl, Norbert Berger