Patents by Inventor J. Friis-Hansen

J. Friis-Hansen 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).

  • Method and apparatus for burning CaCO.sub.3 and MgCO.sub.3 materials
    Patent number: 4283202
    Abstract: A method for automatically controlling the burning process for CaCO.sub.3 and MgCO.sub.3 materials in a kiln which includes feeding burnt material and liquid reagent into a reaction chamber. Then, the amount of heat per unit weight burnt material per unit time liberated in the reaction chamber is determined. The kiln is controlled using the amount of heat determined above.
    Type: Grant
    Filed: May 4, 1979
    Date of Patent: August 11, 1981
    Inventor: J. Friis-Hansen