Patents by Inventor K. Ove Danielsson

K. Ove Danielsson 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 of making mechanical pulp
    Patent number: 5145010
    Abstract: Methods for producing mechanical pulp are disclosed including impregnating softwood chips with water and a complexing agent, refining the impregnated chips in a first refining step including a double-disk refiner, fractionating the refined softwood pulp to produce a reject portion comprising beteen about 15 and 35% of the refined pulp and including an increased concentration of the long and stiff fibers therein, refining the reject portion in second and third refining steps in which the second refining step employs a greater concentration of pulp than does the third refining step, and fractionating the refined pulp.
    Type: Grant
    Filed: May 15, 1990
    Date of Patent: September 8, 1992
    Assignee: Sunds Defibrator Industries Aktiebolag
    Inventors: K. Ove Danielsson, Bo G. S. Falk, Michael Jackson