Patents by Inventor Päivi Solismaa

Päivi Solismaa 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 pre-treatment of fibre material to be used in the manufacture of paper, board or the like
    Patent number: 8480855
    Abstract: A method and apparatus for pretreating fibre material to be used in manufacturing paper or the like, for example, by precipitating mineral substances to the fibres. During precipitation, fibre material, which is advantageously pretreated in a through-flow mixer operating on the principle of an impact mill, is fed to the precipitation reactor. Gas is led to the precipitation reactor in order to generate a gas space in the reactor. The gas contains a substance, which precipitates the mineral substance such as carbon dioxide (CO2). The fibre material is fed to the gas space of to the precipitation reactor as small liquid and solid substance fractions such as drops and/or particles.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: July 9, 2013
    Assignees: FP-Pigments Oy, UPM-Kymmene Oyj
    Inventors: Mikko Maijala, Björn Lax, Roope Maijala, Matti Sipilä, Päivi Solismaa
  • Method and apparatus for pre-treatment of fibre material to be used in the manufacture of paper, board or the like
    Patent number: 8282780
    Abstract: A method and apparatus for pretreating fiber material to be used in manufacturing paper or the like, for example, by precipitating mineral substances to the fibers. During precipitation, fiber material, which is advantageously pretreated in a through-flow mixer operating on the principle of an impact mill, is fed to the precipitation reactor. Gas is led to the precipitation reactor in order to generate a gas space in the reactor. The gas contains a substance, which precipitates the mineral substance such as carbon dioxide (CO2). The fiber material is fed to the gas space of the precipitation reactor as small liquid and solid substance fractions such as drops and/or particles.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: October 9, 2012
    Assignees: FP-Pigments Oy, UPM-Kymmene Oyj
    Inventors: Mikko Maijala, Björn Lax, Roope Maijala, Matti Sipilā, Päivi Solismaa