| 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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| 01/01/1991 | US4981362 Particle concentration measuring method and device |
| 01/01/1991 | US4981356 Method and apparatus for electrothermal atomization of samples |
| 01/01/1991 | US4981355 Calibration cup for in vitro calibration of an oxygen saturation monitor and method of using same |
| 01/01/1991 | US4981338 Optical fiber refractometer |
| 12/30/1990 | CA2020055A1 Inspection apparatus for tubular members |
| 12/27/1990 | WO1990015984A1 Process and device for detecting at least one fluorescent substance dissolved or dispersed in water |
| 12/27/1990 | WO1990015983A1 Assay method |
| 12/27/1990 | WO1990015981A1 Process for the preparation of samples for chemical analysis of liquids by infrared spectroscopy of dry extract and devices for this purpose |
| 12/27/1990 | WO1990015896A1 Device for the lateral scanning of napless areas of fabric webs, especially sponge cloths |
| 12/27/1990 | EP0404732A1 Optical device for measuring the fat contents of milk |
| 12/27/1990 | EP0404568A2 Image processing apparatus |
| 12/27/1990 | EP0404562A2 Method of and apparatus for determining the similarity of a biological analyte from a model constructed from known biological fluids |
| 12/27/1990 | EP0404544A2 Non-contact type automatic multi-point diameter measurement apparatus |
| 12/27/1990 | EP0404258A2 Test-tube with lenticular outside surface particularly for automatized clinical analysis |
| 12/27/1990 | EP0404207A2 Infrared spectrophotometric method |
| 12/27/1990 | EP0403769A2 Procedure for the investigation of physical properties of thin layers |
| 12/27/1990 | EP0403593A1 Terpyridine derivatives. |
| 12/27/1990 | EP0403496A1 Container for liquid observed for impurities. |
| 12/27/1990 | EP0403468A1 Integrated optical interference method |
| 12/27/1990 | EP0371118A4 Non-instrument methods for detecting an analyte of interest using peroxide intermediates and light scattering crystals |
| 12/27/1990 | EP0246313A4 Atomic-absorption or -fluorescence instrumentation with efficient solid-sample atomizer and broad linear range |
| 12/27/1990 | CA1278355C Method for controlling the amount of moisture associated with a web of moving material |
| 12/27/1990 | CA1278196C System for remote chemical analysis |
| 12/26/1990 | CN2068238U Liquid-phase chemical lightening detecting unit |
| 12/26/1990 | CN2068237U Quick narcotics appraising tube |
| 12/26/1990 | CN1048098A Device for monitoring and/or measuring parameters of running, therad-like or wire-like test material and method for operating device |
| 12/26/1990 | CN1010984B Method and apparatus for saccharide analysis |
| 12/25/1990 | US4980571 Methods and apparatus for measuring sidestream smoke |
| 12/25/1990 | US4980551 Non-pressure-dependancy infrared absorption spectra recording, sample cell |
| 12/25/1990 | US4980538 Heating and temperature-control device for biological sample containers |
| 12/25/1990 | US4980278 Method of effecting immunological analysis and apparatus for carrying out the same |
| 12/25/1990 | US4979824 High sensitivity fluorescent single particle and single molecule detection apparatus and method |
| 12/25/1990 | US4979823 Method and arrangement for background compensation in material analysis |
| 12/25/1990 | US4979821 Cuvette for receiving liquid sample |
| 12/23/1990 | WO1991000513A1 Method of obtaining accurate compositional information of multilayer compositions |
| 12/23/1990 | WO1990015985A1 Method of optical analysis |
| 12/23/1990 | CA2062752A1 Method of obtaining accurate compositional information of multilayer compositions |
| 12/20/1990 | DE4018393A1 Measuring photosynthesis exchange gases - using leaf cuvette and photo-acoustic gas measurement in gas analyser |
| 12/20/1990 | DE3919897A1 Stimulating and detecting raman scattering of solid or liquid - using multiple reflections in hollow mirror for increased light intensity and hence sensitivity |
| 12/19/1990 | EP0403337A1 Windscreen wiper system with rain detector |
| 12/19/1990 | EP0402877A1 Method and apparatus for photometric determination of properties of meat pieces |
| 12/19/1990 | EP0402795A1 Method of quantitatively evaluating agglutination reactions |
| 12/19/1990 | EP0402696A1 Method and device for determining the mercury content of solid substances |
| 12/19/1990 | EP0402656A2 Excess air contamination level indicator |
| 12/19/1990 | EP0402633A1 Device for measuring aerosols and airborne dust |
| 12/19/1990 | EP0402380A1 Process and device for testing transparent webs |
| 12/19/1990 | CN2067831U Liquid concentration meter with optical fibre |
| 12/19/1990 | CN2067830U Sensor for measuring liquid concentration |
| 12/19/1990 | CN1047923A Apparatus for analyzing luminosity |
| 12/19/1990 | CN1010891B Measurement of high refractive index of glass microbead |
| 12/18/1990 | USRE33493 Method and apparatus for measuring stable isotopes |
| 12/18/1990 | US4979133 Pyrometer |
| 12/18/1990 | US4979123 Apparatus for determining concentrations of mineral elements |
| 12/18/1990 | US4978862 Method and apparatus for nondestructively measuring micro defects in materials |
| 12/18/1990 | US4978858 Optical web detection and measurement system especially adapted for controlling replenishment of x-ray film processing chemicals |
| 12/18/1990 | US4978854 Bioluminescent detector |
| 12/18/1990 | US4978731 Process for fluorimetric monitoring of functional coatings and compositions and fluorescent agents therefor |
| 12/18/1990 | US4978614 Method of detecting a substance using enzymatically-induced decomposition of dioxetanes |
| 12/18/1990 | US4978503 Devices for use in chemical test procedures |
| 12/18/1990 | US4978225 Detection of anomalies in translucent material by candling |
| 12/18/1990 | CA1278067C Opto-electronic bottle inspection process |
| 12/18/1990 | CA1277851C Laser doppler spectrometer for the statistical study of the behavior of microscopic organisms |
| 12/18/1990 | CA1277850C Automated acousto-optic infra-red analyzer system for monitoring stack emissions |
| 12/18/1990 | CA1277849C Electro-optical coupler for catheter oximeter |
| 12/18/1990 | CA1277848C Optical catheter calibrating assembly |
| 12/16/1990 | WO1990015972A1 Colour monitoring |
| 12/16/1990 | CA2058432A1 Colour monitoring |
| 12/16/1990 | CA2019066A1 Fluorescence-based optical sensor for detection of lipid-soluble analytes |
| 12/13/1990 | WO1990015362A1 Optical web detection and measurement system, especially adapted for controlling replenishment of x-ray film processing chemicals |
| 12/13/1990 | WO1990015325A1 Method for frequency analysis of moving fibre aggregates |
| 12/13/1990 | WO1990015070A1 Very large scale immobilized peptide synthesis |
| 12/13/1990 | CA2391491A1 Very large scale immobilized peptide synthesis |
| 12/13/1990 | CA2018795A1 Method for the quantitative evaluation of agglutination reactions |
| 12/12/1990 | EP0402030A2 Apparatus for detecting fluorescence of a luminescent material |
| 12/12/1990 | EP0401821A1 Electrophoresis pattern reading system of fluorescence type |
| 12/12/1990 | EP0401600A2 Device for monitoring and/or measuring parameters of running test materials in form of thread or wire and method for operating the device |
| 12/12/1990 | EP0401599A2 Remote sensing gas analyzer |
| 12/12/1990 | EP0401484A1 Method for maintaining dustfree, an apparatus for detecting foreign particles in fluids |
| 12/12/1990 | EP0401470A2 Apparatus for emission spectrochemical analysis |
| 12/12/1990 | EP0401453A1 Method for determining by absorption of radiations the concentration of substances in absorbing and turbid matrices |
| 12/12/1990 | EP0377729A4 Improved methods of using chemiluminescent 1,2-dioxetanes |
| 12/12/1990 | EP0289581A4 Improved multichannel gas analyzer and method of use |
| 12/12/1990 | EP0203073B1 Fiber optic seam tracking apparatus |
| 12/11/1990 | US4977325 Optical read system and immunoassay method |
| 12/11/1990 | US4977319 Method for determining oil content of an underground formation |
| 12/11/1990 | US4977314 For measuring intensity distribution of light rays |
| 12/11/1990 | US4976923 Sample container |
| 12/11/1990 | US4976545 For analyzing a surface structure |
| 12/11/1990 | US4976544 Method of inspecting the ends of stacked cigarettes |
| 12/11/1990 | US4976541 Automatic atomic-absorption spectrometry method |
| 12/11/1990 | US4976540 Method for detecting colored foreign particles in light-colored powder and system therefor |
| 12/11/1990 | US4976356 Method of and apparatus for optically checking the appearances of chip-type components and sorting the chip-type components |
| 12/11/1990 | US4976265 Method of detecting enterogastric reflux |
| 12/11/1990 | CA1277511C Coupling between entraining hub and multi-cuvette rotor for analytical apparatus |
| 12/11/1990 | CA1277507C Gas analyzer and a source of ir radiation therefor |
| 12/11/1990 | CA1277506C Fluorescent immunoassay apparatus and method |
| 12/11/1990 | CA1277505C Fluctuation analysis for enhanced particle detection |
| 12/05/1990 | EP0401153A2 Fiber optic damage detection system |
| 12/05/1990 | EP0401001A2 Chemiluminescent doubletriggered 1,2-dioxetanes |
| 12/05/1990 | EP0400989A2 Method for spectroscopic analysis of hydrocarbons, method for chromatographic analysis of hydrocarbons and hydrocarbon refining operation using these methods |