| 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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| 07/24/1991 | EP0198909B1 Drop detection system with mirror element |
| 07/24/1991 | EP0172892B1 Method and device employing photoresponsive semiconductor electrode for determining analyte |
| 07/24/1991 | CN1013263B Device for fastening flexible forme |
| 07/23/1991 | US5034617 Method and apparatus for measuring refractive index and thickness of film |
| 07/23/1991 | US5034616 Device for optically scanning sheet-like documents |
| 07/23/1991 | US5034614 Method of improving fluorescence yield |
| 07/23/1991 | US5034613 Two-photon laser microscopy |
| 07/23/1991 | US5034611 Method for non-destructive identification for electronic inhomogeneities in semiconductor layers |
| 07/23/1991 | US5034609 Method for evaluating quality of raw coffee beans |
| 07/23/1991 | US5034194 Chambers for chromatography for mixing gases or liquids |
| 07/23/1991 | US5034189 Fluorescent probe for rapid measurement of analyte concentration |
| 07/23/1991 | US5033858 Detection of contaminants in a liquid stream |
| 07/23/1991 | US5033852 Optical measuring device for measuring the fat contents of milk |
| 07/23/1991 | US5033851 Light scattering method and apparatus for detecting particles in liquid sample |
| 07/23/1991 | US5033850 Gas flow chamber for use in atomic absorption and plasma spectroscopy |
| 07/23/1991 | US5033849 Atomizing device of high-melting metal |
| 07/23/1991 | US5033846 Lightwave component analyzer for determination of chromatic dispersion in single mode optical fiber |
| 07/23/1991 | US5033286 On-line instrument for measuring effective partial pressure of dissolved gases in a liquid |
| 07/23/1991 | CA1286521C Rapid determination of asphaltene content and device therefor |
| 07/18/1991 | DE4100279A1 Gene comparison by restriction length analysis - using fluorescent labels, used to diagnose genetic defects |
| 07/17/1991 | EP0437358A2 Glow discharge spectrometry |
| 07/17/1991 | EP0437249A2 Spectrometric method free from variations of error |
| 07/17/1991 | EP0437043A2 Laser method and device for processing microcapsules or particles |
| 07/17/1991 | EP0437013A2 Luminescent assays |
| 07/17/1991 | EP0436636A1 Sensor and method for measuring alcohol concentration in an alcohol-gasoline mixture |
| 07/17/1991 | EP0436546A1 Dusting apparatus. |
| 07/17/1991 | CN2081093U 数字式浊度仪 Digital Turbidity |
| 07/17/1991 | CA2033008A1 Video densitometer |
| 07/16/1991 | US5033095 Scanning image analyzer for accumulating quantifiable contaminants of webs |
| 07/16/1991 | US5032735 Method of and apparatus for inspecting printed circuit boards |
| 07/16/1991 | US5032734 Method and apparatus for nondestructively measuring micro defects in materials |
| 07/16/1991 | US5032730 Immunoassay apparatus |
| 07/16/1991 | US5032714 Light waveform measuring device including a streak camera |
| 07/16/1991 | US5032381 Chemiluminescence-based static and flow cytometry |
| 07/16/1991 | US5032380 Bis/2-chloroethyl/ sulfide and 2-chloroethyl ethyl sulfide |
| 07/16/1991 | US5032024 Optical examination apparatus |
| 07/16/1991 | CA1286403C Method of measuring the refractive index profile of optical fibers |
| 07/16/1991 | CA1286222C Method and apparatus for the determination of the antibody content ofblood |
| 07/12/1991 | WO1991010892A1 Circular dichroism and spectrophotometric absorption detection methods and apparatus |
| 07/12/1991 | CA2073681A1 Circular dichroism and spectrophotometric absorption detection methods and apparatus |
| 07/12/1991 | CA2033832A1 Spectrometric method free from variations of error factors |
| 07/11/1991 | WO1991010352A1 Method for the detection of plants |
| 07/11/1991 | WO1991010143A1 System for measuring velocity field of fluid flow utilizing a laser-doppler spectral image converter |
| 07/11/1991 | WO1991010127A1 Web scanning apparatus |
| 07/11/1991 | WO1991010126A1 Device for measuring gas optical density |
| 07/11/1991 | WO1991010125A1 Device for measuring gas optical density |
| 07/11/1991 | WO1991010124A1 Device for measuring gas optical density |
| 07/11/1991 | DE4000584A1 Verfahren und vorrichtung zur konzentrationsbestimmung von isotopen Method and apparatus for concentration determination of isotopes |
| 07/11/1991 | DE4000583A1 Verfahren zum betreiben eines strahlungsabsorptionsspektrometers A method of operating a radiation absorption spectrometer |
| 07/11/1991 | CA2047670A1 Method for identifying plants |
| 07/11/1991 | CA2033963A1 Glow discharge spectrometry |
| 07/10/1991 | EP0436473A1 Machine for the reading and determination degree of the opacity or trasparency of radiographic film |
| 07/10/1991 | EP0436351A2 Sensor |
| 07/10/1991 | EP0436338A2 A non-pressure dependency infrared absorption spectra recording, sample cell |
| 07/10/1991 | EP0436322A2 Method of checking external shape of solder portion |
| 07/10/1991 | EP0436008A1 Process and device for element determinations |
| 07/10/1991 | EP0435998A1 Method of detecting a substance using enzymatically-induced decomposition of dioxetanes |
| 07/10/1991 | EP0128189B1 Method and apparatus for measuring the content of suspended substances in a flowing medium |
| 07/10/1991 | CN2080669U Full-automatic smokemeter |
| 07/10/1991 | CN2080668U Multifunction cotton fibre test apparatus |
| 07/10/1991 | CN1052947A Apparatus for three-dimensional inspection of hollow |
| 07/10/1991 | CN1052945A 干涉分光光度计 Interference spectrophotometer |
| 07/09/1991 | US5031112 System for detecting defective portions in data recording portions of optical recording medium |
| 07/09/1991 | US5030843 Apparatus for measuring particles in liquid having a laminar flow condition |
| 07/09/1991 | US5030842 Fine-particle measuring apparatus |
| 07/09/1991 | US5030838 Quality inspection device for printed matter and method thereof |
| 07/09/1991 | US5030833 Method and device for detecting objects containing fluorescent substances |
| 07/09/1991 | US5030832 Apparatus for detecting fluorescence of a luminescent material |
| 07/09/1991 | US5030823 Device for inspecting the inner wall of a body |
| 07/09/1991 | US5030420 A sensor, made of luminescent material, was covered by cured silicone rubber; monitoring the breathing |
| 07/09/1991 | US5030419 Photoluminescent semiconductor, radiation-emitting surface bonded with reacted material capable of adduct formation with aqueous solutes, actinic irradiation, detecting changes in radiation emitted after adduct formation |
| 07/09/1991 | US5030010 Process for the optical scanning of an object and device for the implementation of said process |
| 07/09/1991 | US5030009 Optical gas sensor |
| 07/09/1991 | US5030008 Method and apparatus for the automated analysis of three-dimensional objects |
| 07/09/1991 | US5030005 Liquid crystal device for calibration and testing of optical instruments |
| 07/09/1991 | US5030001 Method and apparatus for testing and further processing eggs |
| 07/09/1991 | US5030000 Fiber optic probe for measuring reflectance spectrum |
| 07/09/1991 | US5029999 Laser radar device |
| 07/09/1991 | US5029583 Optical analyzer |
| 07/09/1991 | CA1285846C Process for controlling the breaking of oil-in-water emulsions |
| 07/09/1991 | CA1285789C Methods and devices for measuring the proportion of non-condensables carried by a gaseous mix |
| 07/09/1991 | CA1285788C Method and apparatus for measuring the fibre orientation anisotropy in a fibrous structure |
| 07/09/1991 | CA1285753C Apparatus for moistening test strips |
| 07/07/1991 | WO1991010891A1 Process and device for the contactless testing of areal and spatial test pieces |
| 07/07/1991 | CA2050316A1 Process and device for the contactless testing of areal and spatial test pieces |
| 07/07/1991 | CA2033598A1 Apparatus for the size identification of objects |
| 07/06/1991 | CA2033439A1 Process for the elementary analysis of a specimen by high frequency inductively coupled plasma mass spectrometry and apparatus for carrying out this process |
| 07/04/1991 | DE3942226A1 Transparent composite fibre material optical refraction test system - has test body illuminated arrangement, deflection light detectors at fixed points and body movement arrangement |
| 07/03/1991 | EP0435851A1 Method for the determination of immunologically reactive substances of clinical interest |
| 07/03/1991 | EP0435829A2 Arrangement for the analysis of thermal waves in layered systems |
| 07/03/1991 | EP0435731A1 Burner used in an instrument for analysing a gaseous composition by means of flame spectrophotometry |
| 07/03/1991 | EP0435500A1 Non-invasive sensor |
| 07/03/1991 | EP0435327A2 Interference spectrophotometer |
| 07/03/1991 | EP0435326A2 Circuit board inspection device |
| 07/03/1991 | EP0435175A2 Electrophoresis system |
| 07/03/1991 | EP0434893A2 Abnormality detecting device |
| 07/03/1991 | EP0434858A1 Reaction product of a grafted dextranomer and a phthalocyanin dye and its use |
| 07/03/1991 | EP0424465A4 Preparation and use of fluorescent benzothiazole derivatives |
| 07/03/1991 | CN2080176U High signal-to -noise ratio and structure flexible fluorescence light measuring device |
| 07/02/1991 | US5029245 Procedure for controlling a radiation source and controllable radiation source |