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Nils Virving

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  • Hasselby, SE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Refining element
    • Patent number 7,513,451
    • Issue date Apr 7, 2009
    • Metso Paper, Inc.
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining element
    • Patent number 7,451,946
    • Issue date Nov 18, 2008
    • Metso Paper, Inc.
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining element
    • Patent number 7,445,174
    • Issue date Nov 4, 2008
    • Metso Paper, Inc.
    • Nils Virving
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Refining element
    • Patent number 7,354,011
    • Issue date Apr 8, 2008
    • Metso Paper, Inc.
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining element
    • Patent number 7,198,216
    • Issue date Apr 3, 2007
    • Metso Paper, Inc.
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Pair of opposed co-operating refining elements
    • Patent number 7,007,879
    • Issue date Mar 7, 2006
    • Metso Paper, Inc.
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining segment for a rotatable refining disc, and a refining appa...
    • Patent number 6,957,785
    • Issue date Oct 25, 2005
    • Valmet Fibertech AB
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining segment and a refining apparatus comprising a refining dis...
    • Patent number 6,932,290
    • Issue date Aug 23, 2005
    • Valmet Fibertech AB
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Separator device with rotor having peripheral carriers for separati...
    • Patent number 6,602,310
    • Issue date Aug 5, 2003
    • Valmet Fibertech AB
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining element
    • Patent number 6,592,062
    • Issue date Jul 15, 2003
    • Valmet Fibertech AB
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining elements
    • Patent number 6,499,682
    • Issue date Dec 31, 2002
    • Valmet Fibertech AB
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining element
    • Patent number 6,042,036
    • Issue date Mar 28, 2000
    • Sunds Defibrator Industries AB
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining elements
    • Patent number 5,683,048
    • Issue date Nov 4, 1997
    • Sunds Defibrator Industries AB
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refiner segment
    • Patent number 5,439,183
    • Issue date Aug 8, 1995
    • Sunds Defibrator Industries Aktiebolag
    • Nils G. Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Refining segment
    • Patent number 5,362,003
    • Issue date Nov 8, 1994
    • Sunds Defibrator Industries Aktiebolag
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents

  • Information Patent Application

    Refining element
    • Publication number 20070095962
    • Publication date May 3, 2007
    • Metso Paper, Inc.
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Application

    Refining surface and a blade segment for a refiner
    • Publication number 20070084952
    • Publication date Apr 19, 2007
    • Hakan Sjostrom
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Application

    Refining element
    • Publication number 20070057102
    • Publication date Mar 15, 2007
    • Metso Paper, Inc.
    • Nils Virving
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Application

    Refining element
    • Publication number 20060202074
    • Publication date Sep 14, 2006
    • Metso Paper, Inc.
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Application

    Refining element
    • Publication number 20060151649
    • Publication date Jul 13, 2006
    • Metso Paper, Inc.
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Application

    Refining element
    • Publication number 20040173702
    • Publication date Sep 9, 2004
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Application

    Pair of opposed co-operating refining elements
    • Publication number 20040118959
    • Publication date Jun 24, 2004
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Application

    Refining segment for a rotatable refining disc, and a refining appa...
    • Publication number 20030189117
    • Publication date Oct 9, 2003
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Application

    Refining segment and refining apparatus comprising a refining disc...
    • Publication number 20030183712
    • Publication date Oct 2, 2003
    • Nils Virving
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE