Patents by Inventor Pasi Matikainen

Pasi Matikainen 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).

  • Patent number: 12146019
    Abstract: A process for washing a particulate substance comprising: (i) combining a particulate substance and a first washing medium in a first vessel to form a slurry and washing the particulate substance with said washing medium; (ii) transferring the slurry to a hydrocyclone; (iii) removing a first by-product stream depleted in particulate substance and a first product stream enriched in particulate substance from the hydrocyclone; (iv) transferring the first product stream to a second vessel and in the presence of a second washing medium forming a slurry and washing the particulate substance with said second washing medium e.g. by agitation thereof; (v) transferring the slurry to a hydrocyclone; (vi) removing a second by-product stream depleted in particulate substance and a second product stream enriched in particulate substance from the hydrocyclone.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: November 19, 2024
    Assignee: Borealis AG
    Inventors: Pasi Matikainen, Emilia Helisevä, Jukka-Pekka Parjanen
  • Publication number: 20240343839
    Abstract: A gas phase polymerization assembly comprising a gas phase polymerization reactor having at least one inlet and at least one outlet, a circulation gas compression unit having an inlet and an outlet, whereby the inlet of the circulation gas compression unit is fluidly connected to the at least one outlet of the gas phase polymerization reactor by an unreacted gas line; a flush gas compression unit having an inlet and an outlet, wherein the inlet of the flush gas compression unit is fluidly connected to the outlet of the circulation gas compression unit by a pressurized unreacted gas line; a circulation line fluidly connecting the pressurized unreacted gas line with the at least one inlet of the gas phase polymerization reactor; a flush gas withdrawal line connected to the outlet of the flush gas compression unit.
    Type: Application
    Filed: August 30, 2022
    Publication date: October 17, 2024
    Inventors: Mikka Kuusisto, Samuli Zitting, Erno Elovainio, Mikko Lylykangas, Pasi Matikainen
  • Publication number: 20220177613
    Abstract: A process for washing a particulate substance comprising: (i) combining a particulate substance and a first washing medium in a first vessel to form a slurry and washing the particulate substance with said washing medium; (ii) transferring the slurry to a hydrocyclone; (iii) removing a first by-product stream depleted in particulate substance and a first product stream enriched in particulate substance from the hydrocyclone; (iv) transferring the first product stream to a second vessel and in the presence of a second washing medium forming a slurry and washing the particulate substance with said second washing medium e.g. by agitation thereof; (v) transferring the slurry to a hydrocyclone; (vi) removing a second by-product stream depleted in particulate substance and a second product stream enriched in particulate substance from the hydrocyclone.
    Type: Application
    Filed: November 28, 2019
    Publication date: June 9, 2022
    Inventors: Pasi MATIKAINEN, Emilia HELISEVĂ„, Jukka-Pekka PARJANEN
  • Patent number: 10035866
    Abstract: The present invention is directed to a process for producing a solid olefin polymerization catalyst component from an emulsion wherein the particle size of the solid catalyst or the droplet size of the emulsion is controlled. The actual size of the droplets or the solid catalyst particles is measured, or alternatively, both are measured. Then a difference between the actual size and the set point is calculated and the process is controlled based on the difference.
    Type: Grant
    Filed: October 30, 2014
    Date of Patent: July 31, 2018
    Assignee: Borealis AG
    Inventors: Peter Denifl, Timo Leinonen, Pasi Matikainen, Tom Elovirta
  • Publication number: 20160272735
    Abstract: The present invention is directed to a process for producing a solid olefin polymerization catalyst component from an emulsion wherein the particle size of the solid catalyst or the droplet size of the emulsion is controlled. The actual size of the droplets or the solid catalyst particles is measured, or alternatively, both are measured. Then a difference between the actual size and the set point is calculated and the process is controlled based on the difference.
    Type: Application
    Filed: October 30, 2014
    Publication date: September 22, 2016
    Inventors: Peter DENIFL, Timo LEINONEN, Pasi MATIKAINEN, Tom ELOVIRTA
  • Patent number: 8501881
    Abstract: The present application provides a process for polymerizing at least one olefin in the presence of a polymerization catalyst, including: (A) continuously introducing a first liquid with a transition metal compound, an organometallic compound, and a solvent and a second liquid into an emulsification stage, (B) continuously withdrawing the emulsion and directing it into a solidification stage to form a slurry with a solid polymerization catalyst component, (C) continuously recovering the solid polymerization catalyst component, (D) directing the solid polymerization catalyst component into a first prepolymerization stage with a monomer and a second liquid to form a slurry, (E) recovering a prepolymerized solid polymerization catalyst component, (F) continuously introducing the prepolymerized solid polymerization catalyst component into a second prepolymerization stage with an olefin monomer to form a prepolymerized catalyst, and (G) continuously withdrawing the prepolymerized catalyst and directing it into a su
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: August 6, 2013
    Assignee: Borealis AG
    Inventors: Jeannette Aumo, Pasi Matikainen, Michael Bartke, Tom Elovirta, Sameer Vijay, Mikko Lylykangas, Pertti Elo, Lauri Huhtanen
  • Publication number: 20120259076
    Abstract: The present application provides a process for polymerizing at least one olefin in the presence of a polymerization catalyst, including: (A) continuously introducing a first liquid with a transition metal compound, an organometallic compound, and a solvent and a second liquid into an emulsification stage, (B) continuously withdrawing the emulsion and directing it into a solidification stage to form a slurry with a solid polymerization catalyst component, (C) continuously recovering the solid polymerization catalyst component, (D) directing the solid polymerization catalyst component into a first prepolymerization stage with a monomer and a second liquid to form a slurry, (E) recovering a prepolymerized solid polymerization catalyst component, (F) continuously introducing the prepolymerized solid polymerization catalyst component into a second prepolymerization stage with an olefin monomer to form a prepolymerized catalyst, and (G) continuously withdrawing the prepolymerized catalyst and directing it into a su
    Type: Application
    Filed: November 11, 2010
    Publication date: October 11, 2012
    Applicant: BOREALIS AG
    Inventors: Jeannette Aumo, Pasi Matikainen, Michael Bartke, Tom Elovirta, Sameer Vijay, Mikko Lylykangas, Pertti Elo, Lauri Huhtanen