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«Vaisala Limited

Below is an extended Vaisala Limited patents listing. Click here to return to the Vaisala Limited main Biocorporate entry.

Vaisala Limited Patents :

US Patent No.Title
5434778 Method and apparatus for measuring prevailing weather and meteorological visibility
5625139 Method of measuring concentration of nonpolar gases such as carbon dioxide by means of a polymer-based sensor and concentration sensor structure
5631418 Electrically detected impedance detector for the measurement of physical quantities, in particular of temperature or humidity, and process for the manufacture of said detectors
5641911 Method and apparatus for feedback-control of an asymmetric differential pressure transducer
5644080 Method of measuring dewpoint or gas concentration and apparatus for prediction of icing
5644676 Thermal radiant source with filament encapsulated in protective film
5646729 Single-channel gas concentration measurement method and apparatus using a short-resonator Fabry-Perot interferometer
5656781 Capacitive pressure transducer structure with a sealed vacuum chamber formed by two bonded silicon wafers
5679902 Surface-micromachined symmetrical differential pressure sensor with electrodes patterned into multiple conducting areas
5740601 Method of manufacturing an impedance detector
5750903 Method of linearizing a flow velocity sensor, a linearized flow velocity measurement apparatus and system
5619144 Detector and method for observation of the presence of a liquid and/or of a change of phase in same
5607564 Method of producing a microporous, gas permeable electrode structure and a microporous, gas permeable electrode structure
5483414 Electrical impedance detector for measurement of physical quantities, in particular of temperature
5485747 Method of measurement of relative humidity, in particular in radiosondes, and humidity detectors that make use of the method
5500569 Electrically modulatable thermal radiant source and method for manufacturing the same
5504577 Method and apparatus for measuring meteorological visibility and scattering of light, said apparatus utilizing common optics for transmission and reception
5511417 Method and arrangement in measurement of humidity, in particular in radiosondes
5511418 Method for measurement of relative humidity, in particular in radiosondes, and humidity detectors that make use of the method
5531128 Capacitive transducer feedback-controlled by means of electrostatic force and method for controlling the profile of the transducing element in the transducer
5557042 Impedance detector, in particular for radiosonde operation, as well as a process for the manufacture of a detector
5561523 Electrically tunable fabry-perot interferometer produced by surface micromechanical techniques for use in optical material analysis
5589689 Infrared detector with Fabry-Perot interferometer
5801647 Method and apparatus for measuring road surface conditions
5818586 Miniaturized fabry-perot spectrometer for optical analysis
5821898 Codeless GPS positioning method and apparatus for such codeless positioning
6868339 Systems and methods for time corrected lightning detection
6931935 Surface-micromachined absolute pressure sensor and a method for manufacturing thereof
6961662 Systems and methods for spectral corrected lightning detection
7036356 Method and apparatus for defining water content of a liquid
7122820 Method for determining visibility, amount of precipitation and type of precipitation
7187178 Method for determining the voltage sensitivity of the distance between the mirrors of a fabry-perot interferometer
7218279 Method and apparatus for pointing the beam of a wind profiler
7249502 Precipitation/hail sensor and method for precipitation rate measurement
7286935 Method and device for hydrometeor detection
7358862 Radiosonde system, radiosonde system receiver and signal processing method in a radiosonde receiver
6809528 Method and apparatus for measuring water content
6791311 Lightning detection and data acquisition system
5827438 Electrically modulatable thermal radiant source with specific filament
5835216 Method of controlling a short-etalon fabry-perot interferometer used in an NDIR mearsurement apparatus
5850354 Calibration method for NDIR equipment and calibration apparatus
5880836 Apparatus and method for measuring visibility and present weather
5954430 Method and temperature sensor structure for elimination of radiation error
5987963 Method of improving the selectivity of a polymer-film gas sensor and a sensor structure for implementing the method
6177673 Optically black surface for producing the same
6564633 Measurement method and system for a humidity or gas concentration sensor
6735525 Systems and methods for spectral corrected lightning detection
6788043 Lightning detection and data acquisition system
7405827 Gas content measuring apparatus and method

«Vaisala Limited

This page contained an extended Vaisala Limited patents listing. Click here to return to the Vaisala Limited main Biocorporate entry.

 

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