Patents by Inventor Karri Tahkola

Karri Tahkola 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).

  • Ply for a board from an in-line production process
    Patent number: 9863093
    Abstract: A ply for a paper and paperboard made from a ply substrate material, wherein the ply comprises a hybrid material, in an amount of 1-25 wt-% of the ply, wherein the hybrid material is introduced into a target suspension of the short circulation of a fibrous web forming process of a fibrous web machine, in an in-line process, wherein said target suspension forms the ply substrate material, and the hybrid material comprises an alkaline earth carbonate precipitated onto or into fibers or fibrils of a nanofibrillated polysaccharide.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: January 9, 2018
    Assignees: Stora Enso OYJ, Wetend Technologies Ltd.
    Inventors: Olavi Imppola, Jouni Matula, Jussi Matula, Karri Tahkola, Matti Vakevainen, Isto Heiskanen, Jari Rasanen
  • Method of providing fiber web making furnish with filler, and paper or paper board
    Patent number: 9708772
    Abstract: The present invention relates to a method of producing precipitated calcium carbonate (PCC) where a retention/strength enhancing chemical is added to milk of lime to form a mixture thereof prior to adding the mixture of the retention/strength enhancing chemical and milk of lime to paper making stock in a pipeline leading to a headbox of a paper making machine, whereafter carbon dioxide is introduced to the paper making stock, and the carbonation reaction between milk of lime and carbon dioxide is allowed to proceed in the presence of both fibers and the retention/strength enhancing chemical.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: July 18, 2017
    Assignees: Wetend Technologies Oy, Stora Enso Oyj
    Inventors: Isto Heiskanen, Olavi Imppola, Jouni Matula, Jussi Matula, Jari Rasanen, Karri Tahkola, Matti Vakevainen
  • In-line production method for paper making process
    Patent number: 9453305
    Abstract: An in-line production method for providing a liquid flow of at least one additive in the short circulation and into the liquid flow of a paper making stock of a fiber web machine by feeding, the liquid flow of the at least one additive to the liquid flow of the short circulation, wherein a suitable amount of a microfibrillated cellulose or nanofibrillated polysaccharide is provided substantially simultaneously with the feeding of liquid flow of the at least one additive.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: September 27, 2016
    Assignees: Stora Enso OYJ, Wetend Technologies Ltd.
    Inventors: Olavi Imppola, Jouni Matula, Jussi Matula, Karri Tahkola, Isto Heiskanen, Matti Vakevainen, Jari Rasanen
  • A METHOD OF PROVIDING FIBER WEB MAKING FURNISH WITH FILLER, AND PAPER OR PAPER BOARD
    Publication number: 20160060813
    Abstract: The present invention relates to a method of producing precipitated calcium carbonate (PCC) where a retention/strength enhancing chemical is added to milk of lime to form a mixture thereof prior to adding the mixture of the retention/strength enhancing chemical and milk of lime to paper making stock in a pipeline leading to a headbox of a paper making machine, whereafter carbon dioxide is introduced to the paper making stock, and the carbonation reaction between milk of lime and carbon dioxide is allowed to proceed in the presence of both fibres and the retention/strength enhancing chemical.
    Type: Application
    Filed: April 25, 2014
    Publication date: March 3, 2016
    Inventors: Isto HEISKANEN, Olavi IMPPOLA, Jouni MATULA, Jussi MATULA, Jari RASANEN, Karri TAHKOLA, Matti VAKEVAINEN
  • PLY FOR A BOARD FROM AN IN-LINE PRODUCTION PROCESS
    Publication number: 20150315748
    Abstract: A ply for a paper and paperboard made from a ply substrate material, wherein the ply comprises a hybrid material, in an amount of 1-25 wt-% of the ply, wherein the hybrid material is introduced into a target suspension of the short circulation of a fibrous web forming process of a fibrous web machine, in an in-line process, wherein said target suspension forms the ply substrate material, and the hybrid material comprises an alkaline earth carbonate precipitated onto or into fibers or fibrils of a nanofibrillated polysaccharide.
    Type: Application
    Filed: November 6, 2013
    Publication date: November 5, 2015
    Inventors: Olavi Imppola, Jouni Matula, Jussi Matula, Karri Tahkola, Matti Väkeväinen, Isto Heiskanen, Jari Räsänen
  • IN-LINE PRODUCTION METHOD FOR PAPER MAKING PROCESS
    Publication number: 20150292159
    Abstract: An in-line production method for providing a liquid flow of at least one additive in the short circulation and into the liquid flow of a paper making stock of a fiber web machine by feeding, the liquid flow of the at least one additive to the liquid flow of the short circulation, wherein a suitable amount of a microfibrillated cellulose or nanofibrillated polysaccharide is provided substantially simultaneously with the feeding of liquid flow of the at least one additive.
    Type: Application
    Filed: November 6, 2013
    Publication date: October 15, 2015
    Applicant: Wetend Technolgies Ltd.
    Inventors: Olavi Imppola, Jouni Matula, Jussi Matula, Karri Tahkola, Isto Heiskanen, Matti Väkeväinen, Jari Räsänen