Ari Lehto

Person

Helsinki, FI

People

Patents Grantslast 30 patents

Information Patent Grant
Optically black surface for producing the same
- Patent number 6,177,673
- Issue date Jan 23, 2001
- Valtion teknillinen Tutkimuskeskus
- Martti Juhani Blomberg
- G02 - OPTICS
Information Patent Grant
Overpressure protector
- Patent number 5,934,307
- Issue date Aug 10, 1999
- Oy Beamex AB
- Ari Lehto
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Electrically modulatable thermal radiant source with specific filament
- Patent number 5,827,438
- Issue date Oct 27, 1998
- Vaisala Oy
- Martti Blomberg
- G01 - MEASURING TESTING
Information Patent Grant
Miniaturized fabry-perot spectrometer for optical analysis
- Patent number 5,818,586
- Issue date Oct 6, 1998
- Valtion Teknillinen Tutkimuskeskus
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Single-channel gas concentration measurement method and apparatus u...
- Patent number 5,646,729
- Issue date Jul 8, 1997
- Vaisala Oy
- Yrjo Koskinen
- G02 - OPTICS
Information Patent Grant
Thermal radiant source with filament encapsulated in protective film
- Patent number 5,644,676
- Issue date Jul 1, 1997
- Instrumentarium Oy
- Martti Blomberg
- G01 - MEASURING TESTING
Information Patent Grant
Electrically tunable fabry-perot interferometer produced by surface...
- Patent number 5,561,523
- Issue date Oct 1, 1996
- Vaisala Oy
- Martti Blomberg
- G02 - OPTICS
Information Patent Grant
Electrically modulatable thermal radiant source and method for manu...
- Patent number 5,500,569
- Issue date Mar 19, 1996
- Instrumentarium Oy
- Martti Blomberg
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Calibration method for gas concentration measurements
- Patent number 5,369,278
- Issue date Nov 29, 1994
- Vaisala Oy
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for measurement of dewpoint of gases
- Patent number 5,178,462
- Issue date Jan 12, 1993
- Vaisala Oy
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus and method for measuring gas concentrations
- Patent number 5,160,843
- Issue date Nov 3, 1992
- Vaisala Oy
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Multilayer transducer with bonded contacts and method for implement...
- Patent number 5,083,234
- Issue date Jan 21, 1992
- Vaisala Oy
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Method and apparatus for measurement of dewpoint of gases
- Patent number 5,080,494
- Issue date Jan 14, 1992
- Vaisala Oy
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Field usable calibrator for humidity meters
- Patent number 4,998,431
- Issue date Mar 12, 1991
- Vaisala OX
- Kalervo A. Jappinen
- G01 - MEASURING TESTING
Information Patent Grant
Integrated heatable sensor
- Patent number 4,991,424
- Issue date Feb 12, 1991
- Vaisala Oy
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Pressure transducer
- Patent number 4,928,530
- Issue date May 29, 1990
- Vaisala Oy
- Ari Lehto
- G01 - MEASURING TESTING
Information Patent Grant
Method for trimming a planar capacitor
- Patent number 4,924,064
- Issue date May 8, 1990
- Vaisala Oy
- Lars Stormbom
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Capacitive pressure detector structure and method for manufacturing...
- Patent number 4,597,027
- Issue date Jun 24, 1986
- Vaisala Oy
- Ari Lehto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Procedure and means for examining the surface quality of materials...
- Patent number 4,551,030
- Issue date Nov 5, 1985
- Mauri Luukkala
- G01 - MEASURING TESTING
Information Patent Grant
Capacitive humidity sensor and method for the manufacture of same
- Patent number 4,500,940
- Issue date Feb 19, 1985
- Vaisala Oy
- Heikki T. Kuisma
- G01 - MEASURING TESTING
Information Patent Grant
Method for detecting radiation
- Patent number 4,228,354
- Issue date Oct 14, 1980
- Ari Lehto
- G01 - MEASURING TESTING

Person

Patents Grantslast 30 patents

Optically black surface for producing the same

Overpressure protector

Electrically modulatable thermal radiant source with specific filament

Miniaturized fabry-perot spectrometer for optical analysis

Single-channel gas concentration measurement method and apparatus u...

Thermal radiant source with filament encapsulated in protective film

Electrically tunable fabry-perot interferometer produced by surface...

Electrically modulatable thermal radiant source and method for manu...

Calibration method for gas concentration measurements

Method and apparatus for measurement of dewpoint of gases

Apparatus and method for measuring gas concentrations

Multilayer transducer with bonded contacts and method for implement...

Method and apparatus for measurement of dewpoint of gases

Field usable calibrator for humidity meters

Integrated heatable sensor

Pressure transducer

Method for trimming a planar capacitor

Capacitive pressure detector structure and method for manufacturing...

Procedure and means for examining the surface quality of materials...

Capacitive humidity sensor and method for the manufacture of same

Method for detecting radiation