Patents by Inventor Andreas Gorton-Hülgerth

Andreas Gorton-Hülgerth 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 controlling operation of a flotation cell
    Patent number: 7296682
    Abstract: A method for controlling operation of a flotation cell, where the liquid level and the foam level in the cell are measured and controlled. The method includes measuring at least one quality characteristic of the accept leaving the cell and determining the set value(s) for the liquid level and/or the foam level on the basis of the measured quality characteristic. The method is particularly suitable for flotation of a pulp suspension, particularly in deinking flotation.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: November 20, 2007
    Assignee: Andritz AG
    Inventors: Helmuth Gabl, Andreas Gorton-Hülgerth, Erwin Hertl
  • Refiner
    Patent number: 6637686
    Abstract: A refiner including a rotor and a stator defining a cylindrical or conical refining gap therebetween. A pulp feed channel extends in a radial direction from an inlet pipe to the refining gap.
    Type: Grant
    Filed: February 2, 2001
    Date of Patent: October 28, 2003
    Assignee: Andritz AG
    Inventors: Peter Antensteiner, Helmuth Gabl, Andreas Gorton-Hülgerth, Gerald Schadler