Patents by Inventor Paul Korf

Paul Korf 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).

  • Process for the recycling of residues for the production of portland cement clinker
    Patent number: 6146133
    Abstract: The present invention concerns a process for the production of cement clinker in rotary kilns with substitution of primary raw materials and fuels by use of residual materials containing minerals and combustible parts with moisture contents of up to about 65% without predrying. The process makes possible a material and/or thermal utilisation of residual materials in the case of saving of the clay and fuel sources and relief of dumping with simultaneous lowering of the emissions, above all NO.sub.x, in the cement rotary kiln.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: November 14, 2000
    Assignee: Heidelberger Zement AG
    Inventors: Helmut S. Erhard, Volker Schneider, Paul Korf