| Patents for G01N 21 - Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light (181,396) |
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| 04/04/1991 | DE4030315A1 Measuring arrangement for optical absorption in thin film material - uses laser source, optical doubler and double position sensor |
| 04/04/1991 | DE3931592A1 Controlling divisible bottle crates - directing laser beam to conveyor belt and using processor to if parts are correctly assembled |
| 04/04/1991 | DE3921534A1 Absorption cuvette for optical gas-testing in bore - for elongated optical fibre with gas transfer surfaces |
| 04/03/1991 | EP0420145A2 Method and arrangement for the measurement of atomic spectra for quantitatively determining a searched element |
| 04/03/1991 | EP0419573A1 A method of imaging a random medium. |
| 04/03/1991 | EP0419517A1 Interferometric imaging system |
| 04/03/1991 | EP0419486A1 Fluorimeters |
| 04/03/1991 | CN1050443A In-line automatic tester of adfects on float glass |
| 04/03/1991 | CN1012283B Detective device and technique of ultra-weak light |
| 04/03/1991 | CA2025055A1 Capillary tube for taking blood samples |
| 04/02/1991 | US5005005 Fiber optic probe system |
| 04/02/1991 | US5004928 Printing method in which both sides of the recording sheet are inspected and apparatus therefor |
| 04/02/1991 | US5004923 Capillary flow device |
| 04/02/1991 | US5004914 Fiber-optic interferometric chemical sensor |
| 04/02/1991 | US5004909 Method and apparatus for inspecting sidewalls of bottles using stripe pattern illumination |
| 04/02/1991 | US5004565 Method and compositions providing enhanced chemiluminescence from 1,2-dioxetanes |
| 04/02/1991 | US5004349 Lighting apparatus and color measuring apparatus using the same |
| 04/02/1991 | US5004347 Method and an apparatus for inspecting the edge of a lid |
| 04/02/1991 | US5004340 Calibration target for surface analysis scanner systems |
| 04/02/1991 | US5004339 Method and apparatus for determining physical characteristics of objects and object surfaces |
| 04/02/1991 | US5003977 Device for analyzing fluorescent light signals |
| 04/02/1991 | US5003831 Process for monitoring a device for automatically detecting and evaluating surface cracks |
| 04/02/1991 | US5003815 Spectroscopic apparatus |
| 04/02/1991 | CA1282305C Colorimetric gas dosimeter |
| 04/02/1991 | CA1282251C Optical fiber transducer driving and measuring circuit and method for using same |
| 04/02/1991 | CA1282250C Optical-type, phase transition, humidity-responsive devices |
| 03/30/1991 | CA2026613A1 Infrared emission detection |
| 03/27/1991 | EP0419425A2 Differential fluorescence lidar and associated detection method |
| 03/27/1991 | EP0419342A1 Device for correcting errors of an image sequence analysed by an integrated matrix infrared sensor |
| 03/27/1991 | EP0419223A2 Characterizing biological matter in a dynamic condition using near infrared spectroscopy |
| 03/27/1991 | EP0419222A2 Method for the prediction of properties of biological matter by analysis of the near-infrared spectrum thereof |
| 03/27/1991 | EP0419143A1 Method and apparatus for measuring sidestream smoke |
| 03/27/1991 | EP0419046A1 Fire sensing system, process for sensing fire and environment monitor |
| 03/27/1991 | EP0418874A2 Method and apparatus for scattered light measurements |
| 03/27/1991 | EP0418799A2 Quantitative determination method of chemicals for processing semiconductor and an apparatus thereof |
| 03/27/1991 | EP0418353A1 Optical probe for fluid light transmission properties. |
| 03/26/1991 | US5003611 Method for detection of the presence of undesired microorganisms |
| 03/26/1991 | US5003500 Process and apparatus for the preparation of color formulations utilizing polarized light in spectrophotometry |
| 03/26/1991 | US5003488 Automatic fluid sedimentation rate measurement apparatus and method |
| 03/26/1991 | US5003184 Low temperature infrared source |
| 03/26/1991 | US5003181 Method for recording and reproducing a radiation image, panel and phosphors for storing a radiation image |
| 03/26/1991 | US5003175 Calibration of nondispersive infrared photometer |
| 03/26/1991 | US5003174 Optical high-pressure transmission cell |
| 03/26/1991 | US5002397 System of fluid inspection and/or identification |
| 03/26/1991 | US5002392 Multichannel optical monitoring system |
| 03/26/1991 | US5002391 Method and system for (trace) gas analysis |
| 03/26/1991 | US5002390 Atomic emission spectrometer for simultaneous multi-element measurement of elements in a sample |
| 03/26/1991 | CA1282164C System for microscopically analyzing fluids |
| 03/26/1991 | CA1281975C Reagent handling |
| 03/23/1991 | WO1991004484A1 Soil test apparatus |
| 03/23/1991 | CA2066722A1 Soil test apparatus |
| 03/21/1991 | WO1991003731A1 Method of and device for measuring extremely small quantity of oxygen in gas |
| 03/21/1991 | WO1991003730A1 Flow optrode |
| 03/21/1991 | WO1991003729A1 Apparatus for measuring the refractive index of gaseous media |
| 03/21/1991 | WO1991003728A1 Guided optical wave chemical sensor systems |
| 03/21/1991 | WO1991003725A1 Combined optical train for laser spectroscopy |
| 03/21/1991 | WO1991003393A1 Sensing moisture on screen and automated controlled wiping |
| 03/21/1991 | DE3929751A1 Test strip foil photometric analysis - replaces separate filter by correspondingly coloured carrier medium |
| 03/21/1991 | CA2025766A1 Quantitative determination method of chemicals for processing semiconductor and an apparatus thereof |
| 03/21/1991 | CA2025606A1 Method and apparatus for scattered light measurements |
| 03/21/1991 | CA2025468A1 Differential fluorescence lidar and associated detection method |
| 03/20/1991 | WO1991004634A1 Dual image video inspection apparatus |
| 03/20/1991 | EP0418157A1 Endoscopic device for detecting defects on a circular knitting machine |
| 03/20/1991 | EP0418005A1 Apparatus for inspecting the presence of foreign matter |
| 03/20/1991 | EP0417884A2 Methods of calibrating gas analyzers |
| 03/20/1991 | EP0417848A1 Polarimetric fibre-optic sensor |
| 03/20/1991 | EP0417700A2 Improvement in attenuated total reflection spectroscopy |
| 03/20/1991 | EP0417551A2 Photoreflectance method and apparatus utilizing acousto-optic modulation |
| 03/20/1991 | EP0417535A2 Optical oxygen sensor |
| 03/20/1991 | EP0417305A1 Analyzer of liquid sample and analyzing method of liquid sample using said analyzer |
| 03/20/1991 | EP0417257A1 Method and apparatus for spectroscopic comparison of compositions |
| 03/20/1991 | EP0417140A1 Method and apparatus for conducting electrochemiluminescence measurements. |
| 03/20/1991 | EP0417108A1 Cleaning device for cups |
| 03/20/1991 | EP0387291A4 Apparatus and method for use in pulse oximeters |
| 03/20/1991 | EP0254731B1 Frequency agile spectrometer |
| 03/20/1991 | CN2073585U Sensor of liquid turbidity measuring instrument |
| 03/20/1991 | CN1050089A Optical-path arrangement for fluorescence testing and relevant equipment |
| 03/20/1991 | CN1012109B Optical fiber apparatus |
| 03/20/1991 | CN1012108B Integrating sphere measuration device of spectrophotometer |
| 03/20/1991 | CA2064014A1 Dual image video inspection apparatus |
| 03/19/1991 | US5001346 Identifying gas leakage |
| 03/19/1991 | US5001069 Process for photometric determination of protein C and/or protein S |
| 03/19/1991 | US5001054 Method for monitoring glucose |
| 03/19/1991 | US5000901 Fiber-optic physiological probes |
| 03/19/1991 | US5000569 Light reflection defect detection apparatus and method using pulsed light-emitting semiconductor devices of different wavelengths |
| 03/19/1991 | CA1281715C Water-compatible reducible compounds and their use in analytical compositions and methods |
| 03/14/1991 | DE3930236A1 Measuring molecular or mass concn. of particle components in aerosols - measuring intensity at selected wavelength of ramain scattered and focussed laser light without sampling |
| 03/14/1991 | DE3929340A1 Integrated optical gas refractive index sensor - with lithium niobate crystal with proton exchanged niobate and gas sensitive layer on waveguide on cut axis |
| 03/13/1991 | EP0416996A1 Spectroscopical analytical device |
| 03/13/1991 | EP0416691A2 Measuring sensor |
| 03/13/1991 | EP0416658A1 Meat freshness measuring apparatus |
| 03/13/1991 | EP0416607A2 Foreign object detecting method and device |
| 03/13/1991 | EP0416587A2 Measuring apparatus |
| 03/13/1991 | EP0416362A2 Device for determining pigment grain size distribution in a paint surface |
| 03/13/1991 | EP0416302A1 Procedure for optical quality inspection of large-faced panes of a transparent material like glass |
| 03/13/1991 | EP0416160A1 Apparatus for measuring the partial pressure of gases or vapours |
| 03/13/1991 | EP0416110A1 Liquid-type thermostatically-controlled cuvette for spectroscopic measurements |
| 03/13/1991 | EP0225917B1 Non-destructive method for determining the extent of cure of a polymer |
| 03/13/1991 | EP0198037B1 Method for determining localized fiber angle in a three dimensional fibrous material |
| 03/13/1991 | CN2073114U External dynamic thrombus forming tester |