Inventor · disambiguated record
Ari Lehto
Also filed as: LEHTO ARI
29 granted patents·1,086 citations·filing 1979–2005
97Inventor score
Top patents by PatentIndex Score
29 records- 0195US5646729ASingle-channel gas concentration measurement method and apparatus using a short-resonator Fabry-Perot interferometerVAISALA OY·Filed 1995·Granted Jul 8, 1997·209 cites·14 claims
- 0295US5561523AElectrically tunable fabry-perot interferometer produced by surface micromechanical techniques for use in optical material analysisVAISALA OY·Filed 1995·Granted Oct 1, 1996·229 cites·17 claims
- 0393US5644676AThermal radiant source with filament encapsulated in protective filmINSTRUMENTARIUM OY·Filed 1995·Granted Jul 1, 1997·203 cites·25 claims
- 0486US5827438AElectrically modulatable thermal radiant source with specific filamentVAISALA OY·Filed 1996·Granted Oct 27, 1998·77 cites·20 claims
- 0583US6443880B2Arrangement for removing oil in a rollMETSO PAPER INC·Filed 2001·Granted Sep 3, 2002·26 cites·23 claims
- 0681US5500569AElectrically modulatable thermal radiant source and method for manufacturing the sameINSTRUMENTARIUM OY·Filed 1994·Granted Mar 19, 1996·63 cites·13 claims
- 0778US4551030AProcedure and means for examining the surface quality of materials in solid stateLUUKKALA MAURI·Filed 1983·Granted Nov 5, 1985·29 cites·15 claims
- 0875US5818586AMiniaturized fabry-perot spectrometer for optical analysisVALTION TEKNILLINEN·Filed 1995·Granted Oct 6, 1998·50 cites·26 claims
- 0973US4500940ACapacitive humidity sensor and method for the manufacture of sameVAISALA OY·Filed 1983·Granted Feb 19, 1985·28 cites·6 claims
- 1071US4924064AMethod for trimming a planar capacitorVAISALA OY·Filed 1988·Granted May 8, 1990·22 cites·3 claims
- 1163US7883454B2Inner elongated structure of the roll of a paper/board machine or finishing machineMETSO PAPER INC·Filed 2005·Granted Feb 8, 2011·1 cites·18 claims
- 1260US6662630B2Method for measuring slide bearing pressure in a deflection-compensated roll with a fixed shellMETSO PAPER INC·Filed 2001·Granted Dec 16, 2003·8 cites·7 claims
- 1360US4928530APressure transducerVAISALA OY·Filed 1988·Granted May 29, 1990·19 cites·6 claims
- 1459US5369278ACalibration method for gas concentration measurementsVAISALA OY·Filed 1993·Granted Nov 29, 1994·21 cites·5 claims
- 1556US4991424AIntegrated heatable sensorVAISALA OY·Filed 1989·Granted Feb 12, 1991·16 cites·16 claims
- 1655US4597027ACapacitive pressure detector structure and method for manufacturing sameVAISALA OY·Filed 1985·Granted Jun 24, 1986·14 cites·8 claims
- 1753US4998431AField usable calibrator for humidity metersVAISALA OX·Filed 1989·Granted Mar 12, 1991·21 cites·7 claims
- 1844US6177673B1Optically black surface for producing the sameVALTION TEKNILLINEN·Filed 1998·Granted Jan 23, 2001·11 cites·6 claims
- 1942US5160843AApparatus and method for measuring gas concentrationsVAISALA OY·Filed 1991·Granted Nov 3, 1992·9 cites·20 claims
- 2041US5896813AGradient calenderVALMET CORP·Filed 1995·Granted Apr 27, 1999·5 cites·6 claims
- 2137US6699164B1Method for providing a roll for a paper machine with sliding bearings and a roll for a paper machine with sliding bearingsMETSO PAPER INC·Filed 2000·Granted Mar 2, 2004·0 cites·12 claims
- 2236US7022056B2Roll in a paper or board machineMETSO PAPER INC·Filed 2001·Granted Apr 4, 2006·0 cites·4 claims
- 2334US5599263AOil feed system for a variable-crown rollVALMET CORP·Filed 1995·Granted Feb 4, 1997·6 cites·19 claims
- 2433US5083234AMultilayer transducer with bonded contacts and method for implementation of bondingVAISALA OY·Filed 1990·Granted Jan 21, 1992·7 cites·15 claims
- 2533US5080494AMethod and apparatus for measurement of dewpoint of gasesVAISALA OY·Filed 1991·Granted Jan 14, 1992·3 cites·2 claims
- 2631US5178462AMethod and apparatus for measurement of dewpoint of gasesVAISALA OY·Filed 1991·Granted Jan 12, 1993·2 cites·6 claims
- 2729US6692421B2End packing for a deflection compensated rollMETSO PAPER INC·Filed 2002·Granted Feb 17, 2004·0 cites·7 claims
- 2828US4228354AMethod for detecting radiationLEHTO ARI·Filed 1979·Granted Oct 14, 1980·3 cites·6 claims
- 2924US5934307AOverpressure protectorBEAMEX AB OY·Filed 1996·Granted Aug 10, 1999·4 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →