Inventor · disambiguated record
Nils Virving
Also filed as: VIRVING NILS · VIRVING NILS G
23 granted patents·336 citations·filing 1977–2005
96Inventor score
Files withMETSO PAPER INC7VALMET FIBERTECH AB7SUNDS DEFIBRATOR IND AB6SUNDS DEFIBRATOR2DEFIBRATOR AB1
Top patents by PatentIndex Score
23 records- 0193US6592062B1Refining elementVALMET FIBERTECH AB·Filed 2000·Granted Jul 15, 2003·44 cites·16 claims
- 0291US5683048ARefining elementsSUNDS DEFIBRATOR IND AB·Filed 1995·Granted Nov 4, 1997·51 cites·7 claims
- 0384US7419112B2Refining surface and a blade segment for a refinerMETSO PAPER INC·Filed 2004·Granted Sep 2, 2008·23 cites·28 claims
- 0483US5362003ARefining segmentSUNDS DEFIBRATOR IND AB·Filed 1993·Granted Nov 8, 1994·33 cites·5 claims
- 0580US4953796ARefiner segmentSUNDS DEFIBRATOR·Filed 1988·Granted Sep 4, 1990·22 cites·7 claims
- 0677US6957785B2Refining segment for a rotatable refining disc, and a refining apparatus comprising a refining disc with such refining segmentVALMET FIBERTECH AB·Filed 2001·Granted Oct 25, 2005·11 cites·12 claims
- 0775US4073442AElectrically controlled system for regulating the grinding space in a grinding apparatusDEFIBRATOR AB·Filed 1977·Granted Feb 14, 1978·21 cites·7 claims
- 0874US7445174B2Refining elementMETSO PAPER INC·Filed 2004·Granted Nov 4, 2008·9 cites·2 claims
- 0973US6932290B2Refining segment and a refining apparatus comprising a refining disc with such refining segmentVALMET FIBERTECH AB·Filed 2001·Granted Aug 23, 2005·11 cites·11 claims
- 1071US5112443AMethod and apparatus for the manufacture of fibre pulpSUNDS DEFIBRATOR IND AB·Filed 1989·Granted May 12, 1992·21 cites·6 claims
- 1168US6227471B1Feeding element for fibrous materialVALMET FIBERTECH AB·Filed 1998·Granted May 8, 2001·18 cites·7 claims
- 1267US6042036ARefining elementSUNDS DEFIBRATOR IND AB·Filed 1996·Granted Mar 28, 2000·19 cites·6 claims
- 1361US7513451B2Refining elementMETSO PAPER INC·Filed 2005·Granted Apr 7, 2009·2 cites·2 claims
- 1461US7354011B2Refining elementMETSO PAPER INC·Filed 2002·Granted Apr 8, 2008·3 cites·6 claims
- 1559US7198216B2Refining elementMETSO PAPER INC·Filed 2004·Granted Apr 3, 2007·2 cites·7 claims
- 1659US5439183ARefiner segmentSUNDS DEFIBRATOR IND AB·Filed 1994·Granted Aug 8, 1995·11 cites·4 claims
- 1759US4772358AMethod for making pulpSUNDS DEFIBRATOR·Filed 1987·Granted Sep 20, 1988·10 cites·2 claims
- 1857US7007879B2Pair of opposed co-operating refining elementsMETSO PAPER INC·Filed 2002·Granted Mar 7, 2006·2 cites·8 claims
- 1955US6602310B1Separator device with rotor having peripheral carriers for separating solid particles from a gas streamVALMET FIBERTECH AB·Filed 2000·Granted Aug 5, 2003·1 cites·3 claims
- 2054US5526992ARefining element of a disc refinerSUNDS DEFIBRATOR IND AB·Filed 1993·Granted Jun 18, 1996·16 cites·5 claims
- 2144US7451946B2Refining elementMETSO PAPER INC·Filed 2003·Granted Nov 18, 2008·0 cites·6 claims
- 2233US6499682B1Refining elementsVALMET FIBERTECH AB·Filed 1998·Granted Dec 31, 2002·4 cites·8 claims
- 2331US6299084B1Feeding device for fibrous materialVALMET FIBERTECH AB·Filed 1998·Granted Oct 9, 2001·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →