Patents by Inventor Mikael Lucander

Mikael Lucander 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 mechanical defibration of wood
    Patent number: 7819149
    Abstract: The present invention provides a novel method and apparatus for producing pulp from lignocellulosic raw material, such as wood or annual or perennial plants, by mechanical defibration. According to the invention, fibers are peeled from the wood by means of grinding grits arranged on a defibration surface, wherein at least 90% of the protrusion difference distribution between adjacent or neighboring grits on the surface belongs to a value region maximally as wide as the average grit diameter. By means of the invention, a reduction in specific energy consumption of up to 50% or even more can be obtained.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: October 26, 2010
    Assignees: Metso Paper, Inc., M-real Oyj, Myllykoski Oyj, Stora Enso Oyj, UPM Kymmene Oyj
    Inventors: Mikael Lucander, Tomas Björkovist, Olli Tuovinen
  • Method and apparatus for mechanical defibration of wood
    Publication number: 20060283990
    Abstract: The present invention provides a novel method and apparatus for producing pulp from lignocellulosic raw material, such as wood or annual or perennial plants, by mechanical defibration. According to the invention, fibers are peeled from the wood by means of grinding grits arranged on a defibration surface, wherein at least 90% of the protrusion difference distribution between adjacent or neighboring grits on the surface belongs to a value region maximally as wide as the average grit diameter. By means of the invention, a reduction in specific energy consumption of up to 50% or even more can be obtained.
    Type: Application
    Filed: June 5, 2006
    Publication date: December 21, 2006
    Inventors: Mikael Lucander, Tomas Bjorkovist, Olli Tuovinen