| 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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| 03/17/1981 | US4256404 Optoelectronic feedback control for a spectrometer |
| 03/17/1981 | US4256403 Combination water contaminant and fuel density detector |
| 03/17/1981 | US4255971 Thermoacoustic microscopy |
| 03/17/1981 | CA1097791A1 Clamped acoustic elastic wave generator |
| 03/11/1981 | EP0024603A1 Method and device for the measurement of laser radiation absorption in media |
| 03/11/1981 | EP0024586A1 Method of defining a particular kind of error |
| 03/11/1981 | EP0024574A1 Apparatus for determining the refractive index profile of optical fibres |
| 03/10/1981 | US4255762 Apparatus for inspecting pipes in a plant |
| 03/10/1981 | US4255053 Photometer including auxiliary indicator means |
| 03/10/1981 | US4255052 Method of generating nitrogen for flameless emission spectroscopy |
| 03/10/1981 | US4255051 Apparatus for emission spectrochemical analysis |
| 03/05/1981 | WO1981000636A1 Detection device with detector |
| 03/05/1981 | WO1981000622A1 Process and device of molecular spectroscopy particularly for determining metabolites |
| 03/03/1981 | US4254339 Method for the fluorimetric quantitative determination of SO2 in gases and apparatus therefor |
| 03/03/1981 | US4254223 V-shaped transparent vessel |
| 03/03/1981 | US4254084 Optical cell for photometric analysis |
| 03/03/1981 | US4253848 Measuring fluorescence of compound formed by volatile oxidized lipids reacting with polycaprolactam |
| 03/03/1981 | US4253770 Optoacoustic analyzer |
| 03/03/1981 | US4253769 Stark effect spectrophone for continuous absorption spectra monitoring |
| 03/03/1981 | US4253768 Processing system for detection and the classification of flaws on metallic surfaces |
| 03/03/1981 | US4253767 Photo-integrated densitometer |
| 03/03/1981 | US4253766 Optical grain analysis instrument |
| 03/03/1981 | CA1096959A1 Apparatus for detecting foreign bodies in glass bottles |
| 03/03/1981 | CA1096958A1 Caustic detection system |
| 03/03/1981 | CA1096654A1 Automatic electrophoresis apparatus |
| 02/24/1981 | US4253113 Method and apparatus for detecting surface defects on a band travelling at high speed |
| 02/24/1981 | US4253038 Light source excited by high frequency for Zeeman effect atomic absorption analysis |
| 02/24/1981 | US4252617 Method and apparatus for spectrophotometry |
| 02/24/1981 | US4252536 Method and system for measuring blood coagulation time |
| 02/24/1981 | US4252443 Blackening sensor |
| 02/24/1981 | CA1096461A1 Optical smoke detector with conical light beam source |
| 02/24/1981 | CA1096459A1 Automatic air-in-line fluid detector |
| 02/24/1981 | CA1096194A2 Temperature control apparatus for luminescence measuring photometer |
| 02/18/1981 | EP0024053A1 Method of testing the rate of soiling of record carriers |
| 02/18/1981 | EP0023926A1 Grain sorting machine |
| 02/17/1981 | US4251727 Gas detection |
| 02/17/1981 | US4251159 Disposable multi-chamber cuvette |
| 02/17/1981 | CA1095738A1 Shive ratio analyzer |
| 02/11/1981 | EP0023812A1 Skin categorising apparatus |
| 02/11/1981 | EP0023577A1 Surface stress measurement |
| 02/11/1981 | EP0023574A1 Opto-electronic system for automatically testing the quality of printed-circuit boards, their intermediate products and printing tools |
| 02/10/1981 | US4250553 Fluid flow measurement system |
| 02/10/1981 | US4250433 Vacuo spark generator for the spectrographic analysis of samples |
| 02/10/1981 | US4250394 Apparatus for determining immunochemical substances |
| 02/10/1981 | US4250383 Thread inspection apparatus and method |
| 02/10/1981 | US4250382 Coat detection method |
| 02/10/1981 | US4249825 Method and apparatus suitable for ocular blood flow analysis |
| 02/10/1981 | US4249823 Windscreen angular deviation measurement device |
| 02/10/1981 | US4249413 Method and device for locating a defective tube in a steam generator tube bundle |
| 02/10/1981 | CA1095619A1 Defect detection system |
| 02/05/1981 | WO1981000305A1 Method for selective determination of conjugated or unconjugated bilirubin |
| 02/05/1981 | WO1981000299A1 Refractively scanned interferometer |
| 02/05/1981 | WO1981000261A1 Charge effects in immunoassays |
| 02/04/1981 | EP0023337A1 Polychromatic photometer |
| 02/03/1981 | US4249244 Electro-optical system and method and apparatus for providing automatically-compensating, traceable calibration and zeroing for light scattering devices |
| 02/03/1981 | US4249081 Defect detection system |
| 02/03/1981 | US4249075 Detection of birdswing defects in glass containers |
| 02/03/1981 | US4248537 Optical apparatus for determining the light exit angle from a material strip illuminated by a light bead |
| 02/03/1981 | US4248536 Dual wavelength photometric device |
| 02/03/1981 | CA1094931A1 Analytical test article and method |
| 01/27/1981 | US4247770 Aerial mineral survey method and apparatus using pulsed laser beam to vaporize surface material |
| 01/27/1981 | US4247205 Gas measuring apparatus with standardization means, and method therefor |
| 01/27/1981 | US4247204 Method and apparatus for a web edge tracking flaw detection system |
| 01/27/1981 | US4247203 Automatic photomask inspection system and apparatus |
| 01/27/1981 | CA1094477A1 Assays utilizing localized electromagnetic radiation sources |
| 01/27/1981 | CA1094432A1 Colorimetric assay for bilirubin |
| 01/27/1981 | CA1094345A1 Photometric analyzer |
| 01/27/1981 | CA1094344A2 Method and apparatus for photoluminescent detection and measurement |
| 01/27/1981 | CA1094341A1 Sterilizable, disposable optical scattering reference medium |
| 01/22/1981 | WO1981000152A1 A method and an apparatus for determining refracted light |
| 01/22/1981 | WO1981000098A1 Beverage dispensing device and container therefor |
| 01/21/1981 | EP0022757A1 Method for determining creatine kinase in samples containing ATP |
| 01/21/1981 | EP0022673A1 Method for selective determination of conjugated or unconjugated bilirubin |
| 01/21/1981 | EP0022670A2 Method and apparatus for automated identification and enumeration of specified blood cell subclasses |
| 01/21/1981 | EP0022506A1 Optical measuring apparatus |
| 01/21/1981 | EP0022438A1 Method for detecting aerosols in air of a control zone and apparatus for its performing |
| 01/20/1981 | US4246606 Inspection apparatus |
| 01/20/1981 | US4246489 Liquid level detector for detecting a liquid level when reaching a prescribed height |
| 01/20/1981 | US4246340 Method and reagent for bioluminiscence |
| 01/20/1981 | US4246098 Method and apparatus for detecting blemishes on the surface of an article |
| 01/20/1981 | US4246060 Plasma development process controller |
| 01/20/1981 | US4245997 Detection of gas by color change, warning by an alarm when gas is above or below threshold |
| 01/20/1981 | US4245914 Sample cell window cleaning device |
| 01/20/1981 | US4245913 Scanning and detecting device |
| 01/20/1981 | US4245912 Device such as an instrument for optically, preferably visually, determining a definite plane |
| 01/20/1981 | US4245910 Apparatus for detecting particles suspended in a gas |
| 01/20/1981 | US4245907 Disposable blood chamber |
| 01/14/1981 | EP0022246A1 Non dispersive infrared gas analyser |
| 01/13/1981 | US4244916 Device for conditioning a sample of liquid for analyzing with internal filter |
| 01/13/1981 | CA1093341A1 Two-flame burner for flame photometric detection |
| 01/13/1981 | CA1093338A1 Method of analyzing liquid samples and system for continuously automatically analyzing same |
| 01/13/1981 | CA1093337A2 Fluorometric system method and test article |
| 01/13/1981 | CA1093336A1 Quick change optical filter for a photometric detector |
| 01/07/1981 | EP0021997A1 Method of concentrating a low-content element in a solution |
| 01/07/1981 | EP0021996A1 Apparatus for producing an aerosol jet |
| 01/07/1981 | EP0021816A1 Method and system of detecting pinholes in hollow fibres |
| 01/07/1981 | EP0021492A1 Disposable diaper type garment having wetness indicator |
| 01/07/1981 | EP0021261A1 Test device resistant to cross contamination between reactant areas and process for making it |
| 01/07/1981 | EP0021245A1 Rapid test for detecting ascorbic acid and method for its preparation |
| 01/07/1981 | EP0021236A1 Method for optically assaying liquid samples |