Patents by Inventor Karin H Knudsen

Karin H Knudsen 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).

  • Removing volatile compounds from polymer pellets
    Patent number: 9216548
    Abstract: The invention is directed to a process for the treatment of plastic material comprising a) providing a liquid; b) contacting the plastic material with the liquid; c) keeping the plastic material in the liquid at Tb?25° C. to Tb of the liquid, wherein Tb is the boiling point of the liquid at the applied pressure; and d) removing the plastic material from the liquid. Furthermore, the invention is directed to the use of a liquid for the treatment of plastic material and to a plant for treating plastic material with a liquid.
    Type: Grant
    Filed: October 24, 2008
    Date of Patent: December 22, 2015
    Assignee: BOREALIS TECHNOLOGY OY
    Inventors: Esa Korhonen, Ensio Hietanen, Karin H. Knudsen, Kai Hagane, Fred Bergmann, Klaus Nyfors
  • REMOVING VOLATILE COMPOUNDS FROM POLYMER PELLETS
    Publication number: 20110245445
    Abstract: The invention is directed to a process for the treatment of plastic material comprising a) providing a liquid; b) contacting the plastic material with the liquid; c) keeping the plastic material in the liquid at Tb?25° C. to Tb of the liquid, wherein Tb is the boiling point of the liquid at the applied pressure; and d) removing the plastic material from the liquid. Furthermore, the invention is directed to the use of a liquid for the treatment of plastic material and to a plant for treating plastic material with a liquid.
    Type: Application
    Filed: October 24, 2008
    Publication date: October 6, 2011
    Inventors: Amir Karbasi, Esa Korhonen, Ensio Hietanen, Karin H. Knudsen, Kai Hagane, Fred Bergmann, Klaus Nyfors
  • Degassing apparatus
    Patent number: 7267803
    Abstract: A degassing apparatus for use with a polymerisation reactor is disclosed. Slurry from the reactor is discharged into a flask tank (3) in which monomers or dilluent vaporise to form a gas. Filler units (9, 10) are provided at the upper part of the flash tank (3). They may be selectively connected to the flash tank by valves (11, 12). No cyclone etc. is provided between the flash tank and the filter (9, 10) and these particles may then fall back into the flash tank (3). The filters may be separately isolated for cleaning or replacement.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: September 11, 2007
    Assignee: Borealis Technology Oy
    Inventors: Karin H Knudsen, Willy Wilhelmsen, Hans Narvestad, Odd J. Vardal, Ingrid S. Melaaen
  • Degassing apparatus
    Publication number: 20030156999
    Abstract: A degassing apparatus for use with a polymerisation reactor is disclosed. Slurry from the reactor is discharged into a flask tank (3) in which monomers or dilluent vaporise to form a gas. Filler units (9, 10) are provided at the upper part of the flash tank (3). They may be selectively connected to the flash tank by valves (11, 12). No cyclone etc. is provided between the flash tank and the filter (9, 10) and these particles may then fall back into the flash tank (3). The filters may be separately isolated for cleaning or replacement.
    Type: Application
    Filed: December 19, 2002
    Publication date: August 21, 2003
    Inventors: Karin H Knudsen, Willy Wilhelmsen, Hans Narvestad, Odd J Vardal, Ingrid S Melaaen