Patents by Inventor U. Krister Svensson

U. Krister Svensson 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 arrangement for finely-grinding minerals
    Patent number: 5361996
    Abstract: The invention relates to a method for finely grinding minerals and similar materials in an essentially dry state to particle sizes at which the ground material can be used as a filler. The method is characterized by effecting at least the final grinding phase in a closed grinding cavity that has been placed under a sub-pressure. The pressure in the grinding space shall preferably be lower than the prevailing ambient pressure by up to about 10 kPa.The invention also relates to a mill having a grinding cavity that can be placed under a sub-pressure.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: November 8, 1994
    Assignee: Sala International AB
    Inventors: U. Krister Svensson, Conny L. Rehnvall