Patents by Inventor Kenneth J. Derksen

Kenneth J. Derksen 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 REDUCING NOX EMISSIONS IN ROTARY KILNS BY SNCR
    Publication number: 20120315590
    Abstract: A method of operating a mineral processing kiln includes introducing a quantity of a selective non-catalytic reduction (SNCR) reducing agent into the kiln. The SNCR reducing agent may be a solid, liquid, or a gas. A mineral processing kiln modified for the implementation of SNCR is also disclosed.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 13, 2012
    Inventors: Eric R. Hansen, Kenneth J. Derksen, Kevin Blankenship, Walter Parker, Ralph A. Supelak, James R. Tutt
  • Method and apparatus for reducing NOemissions in rotary kilns by SNCR
    Patent number: 7959435
    Abstract: A method of operating a mineral processing kiln includes introducing a quantity of a selective non-catalytic reduction (SNCR) reducing agent into the kiln. The SNCR reducing agent may be a solid, liquid, or a gas. A mineral processing kiln modified for the implementation of SNCR is also disclosed.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: June 14, 2011
    Assignees: Cadence Environmental Energy, Inc., Ash Grove Cement Company
    Inventors: Eric R. Hansen, Kenneth J. Derksen, Kevin Blankenship, Walter Parker, Ralph A. Supelak, James R. Tutt