Vaisala Oy

Patent Owner

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 6200
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS495
 
  
 
G01W METEOROLOGY 313
 
  
 
G01L MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE 254
 
  
 
H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 264
 
  
 
H01K ELECTRIC INCANDESCENT LAMPS 220
 
  
 
B64B LIGHTER-THAN-AIR AIRCRAFT 114
 
  
 
G01C MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY 1104
 
  
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 159
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5835216 Method of controlling a short-etalon fabry-perot interferometer used in an NDIR mearsurement apparatusJul 05, 96Nov 10, 98[G01B]
5827438 Electrically modulatable thermal radiant source with specific filamentNov 22, 96Oct 27, 98[H05D]
5818586 Miniaturized fabry-perot spectrometer for optical analysisOct 31, 95Oct 06, 98[G01B]
5801647 Method and apparatus for measuring road surface conditionsSep 06, 96Sep 01, 98[G08B]
5750903 Method of linearizing a flow velocity sensor, a linearized flow velocity measurement apparatus and systemDec 21, 95May 12, 98[G01F]
5656781 Capacitive pressure transducer structure with a sealed vacuum chamber formed by two bonded silicon wafersApr 30, 96Aug 12, 97[G01L]
5646729 Single-channel gas concentration measurement method and apparatus using a short-resonator Fabry-Perot interferometerDec 18, 95Jul 08, 97[G02B, G01B]
5644676 Thermal radiant source with filament encapsulated in protective filmJun 23, 95Jul 01, 97[H01K]
5641911 Method and apparatus for feedback-control of an asymmetric differential pressure transducerOct 04, 94Jun 24, 97[G01L]
5631418 Electrically detected impedance detector for the measurement of physical quantities, in particular of temperature or humidity, and process for the manufacture of said detectorsSep 27, 94May 20, 97[G01K, G01D, H01G]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5987963 Method of improving the selectivity of a polymer-film gas sensor and a sensor structure for implementing the methodExpiredDec 11, 97Nov 23, 99[G01N]
5954430 Method and temperature sensor structure for elimination of radiation errorExpiredJan 03, 97Sep 21, 99[G01J]
5880836 Apparatus and method for measuring visibility and present weatherExpiredOct 24, 96Mar 09, 99[G01N]
5850354 Calibration method for NDIR equipment and calibration apparatusExpiredMar 22, 96Dec 15, 98[G01N]
5821898 Codeless GPS positioning method and apparatus for such codeless positioningExpiredMar 13, 96Oct 13, 98[G01S]
5740601 Method of manufacturing an impedance detectorExpiredDec 08, 95Apr 21, 98[H01R, H01C]
5679902 Surface-micromachined symmetrical differential pressure sensor with electrodes patterned into multiple conducting areasExpiredFeb 12, 96Oct 21, 97[G01L]
5644080 Method of measuring dewpoint or gas concentration and apparatus for prediction of icingExpiredApr 13, 95Jul 01, 97[G01N, G01W]
5619144 Detector and method for observation of the presence of a liquid and/or of a change of phase in sameExpiredAug 23, 94Apr 08, 97[G01N, G01R]
5511417 Method and arrangement in measurement of humidity, in particular in radiosondesExpiredSep 27, 94Apr 30, 96[G01N, G05D, G01W]
5511418 Method for measurement of relative humidity, in particular in radiosondes, and humidity detectors that make use of the methodExpiredJun 06, 95Apr 30, 96[G01N, G01W]
5369278 Calibration method for gas concentration measurementsExpiredJan 07, 93Nov 29, 94[G01N, G01D]
5317315 Method and device for measurement of the velocity of a moving target by making use of the Doppler shift of electromagnetic radiationExpiredFeb 17, 93May 31, 94[G01S]
5178462 Method and apparatus for measurement of dewpoint of gasesExpiredOct 28, 91Jan 12, 93[G01N]
5160843 Apparatus and method for measuring gas concentrationsExpiredJul 18, 91Nov 03, 92[G01N, H01S]
5083234 Multilayer transducer with bonded contacts and method for implementation of bondingExpiredJul 18, 90Jan 21, 92[H01G]
5080494 Method and apparatus for measurement of dewpoint of gasesExpiredMay 09, 91Jan 14, 92[G01N]
5075816 Capacitive humidity sensor construction and method for manufacturing the sensorExpiredJul 18, 90Dec 24, 91[G01N, H01G]
5055849 Method and device for measuring velocity of target by utilizing doppler shift of electromagnetic radiationExpiredOct 09, 90Oct 08, 91[G01S, G01W]
5053784 Apparatus and method for measuring the azimuth and elevation of an objectExpiredJun 07, 90Oct 01, 91[G01S]

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