| 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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| 06/20/1990 | CN2058490U Optical function film sensor |
| 06/20/1990 | CN1008480B Method for examining structure defect |
| 06/20/1990 | CA2005367A1 Portable colorimeter and method for characterization of a colored surface |
| 06/19/1990 | US4935875 Chemical analyzer |
| 06/19/1990 | US4935811 Surface defect inspection apparatus with microscope |
| 06/19/1990 | US4935634 Atomic force microscope with optional replaceable fluid cell |
| 06/19/1990 | US4935628 Method and apparatus for detecting inks |
| 06/19/1990 | US4935407 Immunoassay |
| 06/19/1990 | US4935346 Colorimetric measurement |
| 06/19/1990 | US4935206 Method and apparatus for measuring the reaction of an indicator to the presence of various gases |
| 06/19/1990 | US4934926 Method and apparatus for monitoring and controlling burner operating air equivalence ratio |
| 06/19/1990 | US4934818 Refractive index profiling technique |
| 06/19/1990 | US4934817 Device with detachable test strip holder for optically evaluating a test strip |
| 06/19/1990 | US4934816 Laser absorption detection enhancing apparatus and method |
| 06/19/1990 | US4934813 Apparatus for inspecting an inner surface of a pipe including means for preventing halation |
| 06/19/1990 | US4934811 Apparatus and method for detection of fluorescence or light scatter |
| 06/19/1990 | US4934229 Marking station for timber |
| 06/19/1990 | US4934183 Excess air contamination level indicator |
| 06/19/1990 | US4934182 Process and apparatus for determining water content of materials |
| 06/19/1990 | CA1270581A1 Analysis system for sulphur in liquid hydrocarbons |
| 06/14/1990 | WO1990006508A1 Process and apparatus for the detection of sulfur |
| 06/14/1990 | WO1990006505A1 Method of and apparatus for detecting wrinkles in tapes |
| 06/14/1990 | WO1990006504A1 Optoelectronic sensing device |
| 06/14/1990 | WO1990006503A2 Sensor for optical assay |
| 06/13/1990 | EP0372862A2 Cyclosporine binding protein and its use in an assay for biologically-active cyclosporine |
| 06/13/1990 | EP0372802A2 Optical waveguide sensor |
| 06/13/1990 | EP0372429A2 Method and apparatus for measuring respiration, oxidation and similar interactions between a sample and a selected component of a fluid medium |
| 06/13/1990 | EP0372242A2 Apparatus for analyzing the composition of metal particles |
| 06/13/1990 | EP0372241A2 Optical device for three-dimensional form sensing |
| 06/13/1990 | EP0256120B1 An in situ particle size measuring device cross-reference to related applications |
| 06/13/1990 | EP0174374B1 Glow discharge tube for analysis |
| 06/13/1990 | DE3920840C1 Integrated optical sensor detecting temp. and refraction index changes - has double refractive waveguide in substrate extending along X or Y axis of cut lithium-niobate crystal |
| 06/13/1990 | DE3841333A1 Method and device for monitoring a state of a carriageway |
| 06/13/1990 | CN1042994A Bioassaying device used with light radiator |
| 06/13/1990 | CN1042993A Bioassaying device used with light radiation |
| 06/12/1990 | US4933568 Device for testing web-like planar structures moving at high speed |
| 06/12/1990 | US4933567 Method and apparatus for nondestructively measuring subsurface defects in materials |
| 06/12/1990 | US4933566 Method of detecting tape defects |
| 06/12/1990 | US4933543 Dark signal compensation for diode arrays |
| 06/12/1990 | US4933353 Lipophilically-substituted piperidine oxadiazolyl compounds and their use in stimulating cognitive functions (II) |
| 06/12/1990 | US4933276 Use of oxidase enzyme systems in chemiluminescent assays |
| 06/12/1990 | US4932779 Color measuring instrument with integrating sphere |
| 06/06/1990 | EP0371953A2 Device for the measurement of the chemical and physical parameters of a fluidic or gaseous medium |
| 06/06/1990 | EP0371861A2 High density semiconductor structure and method of making the same |
| 06/06/1990 | EP0371650A1 Slab surface contour monitor |
| 06/06/1990 | EP0371643A2 Improved method and apparatus for inspecting workpieces |
| 06/06/1990 | EP0371550A1 Measure for measuring thin film thickness |
| 06/06/1990 | EP0371547A1 Device for inspecting the inner wall of a body |
| 06/06/1990 | EP0371546A1 A method and an apparatus for detecting cracks in the mouth zone of a transparant container |
| 06/06/1990 | EP0371513A2 Device and method for assay of liquid sample |
| 06/06/1990 | EP0371118A1 Non-instrument methods for detecting an analyte of interest using peroxide intermediates and light scattering crystals |
| 06/06/1990 | EP0371054A1 Rotor for processing liquids using movable capillary tubes. |
| 06/05/1990 | US4931774 Liquid-vapor change of phase detector |
| 06/05/1990 | US4931767 Device for visibility measurement for a motor vehicle |
| 06/05/1990 | US4931660 Apparatus for measuring foreign substance content in flowing liquids |
| 06/05/1990 | US4931659 Device for calibrating an apparatus for measuring the formation index of a sheet of paper |
| 06/05/1990 | US4931657 On-line texture sensing |
| 06/05/1990 | US4931632 Variable parameter optical bottle checker |
| 06/05/1990 | US4931569 Liquid chromatography; chemiluminescent; for immunoassay, elisa |
| 06/05/1990 | US4931402 Photometric analysis equipment |
| 06/05/1990 | US4931384 For chemical,biochemical samples; coating substrate with material to bind species, reflect polarized light, measuring reflective dip |
| 06/05/1990 | US4931223 Mixture releasing light of different wavelengths by enzyme decomposition |
| 06/05/1990 | US4930893 Electrophoresis imaging system |
| 06/05/1990 | US4930892 Photodiode array spectrometer |
| 06/05/1990 | US4930890 Method and apparatus for detecting through-hole voids in multi-layer printed wiring board |
| 06/05/1990 | US4930889 Method of and inspecting apertured mask sheets |
| 06/05/1990 | US4930865 Optical transmission spectrometer |
| 06/05/1990 | US4930852 Optical fiber mounting and structural monitoring |
| 06/05/1990 | US4930352 Reflective membrane optical scintillator |
| 06/05/1990 | CA1269862A1 Non-destructive method for determining the extent of cure of a polymer |
| 06/02/1990 | CA2004465A1 Method and apparatus for determining ambient light and surface reflectance |
| 05/31/1990 | WO1990005955A1 Method and apparatus for identifying causes of repeatability problems in near infrared analytical instruments |
| 05/31/1990 | WO1990005914A1 Biological diagnostic assay system |
| 05/31/1990 | WO1990005907A2 Inspection apparatus |
| 05/31/1990 | WO1990005906A1 Dual absorbent analyte detection |
| 05/31/1990 | WO1990005905A1 Method and medium for the control or adjustment of instruments with an optical probe |
| 05/31/1990 | WO1990005904A1 Apparatus and method for measuring refractive index |
| 05/31/1990 | WO1990005903A2 Coded cuvette for use in testing apparatus |
| 05/31/1990 | WO1990005901A1 Remote gas analyzer for motor vehicle exhaust emissions surveillance |
| 05/31/1990 | DE3933482A1 Geraet zur pruefung von lebewesen mit sichtbarer strahlung The device to verify critters with visible radiation |
| 05/31/1990 | DE3840078A1 Method for increasing the lifetime of an ultraviolet lamp and carrying out the method |
| 05/31/1990 | DE3840005A1 Method and device for testing hollow glass bodies for contained inclusions |
| 05/31/1990 | DE3839561A1 Device for the determination of faults in liquid media |
| 05/30/1990 | EP0371003A2 Device for the analytical determination of components in a body fluid |
| 05/30/1990 | EP0370807A1 A liquid mixture ratio detector device |
| 05/30/1990 | EP0370570A1 A method and an apparatus for inspecting the edge of a lid |
| 05/30/1990 | EP0370569A1 A method and an apparatus for checking an object for the presence of filling compound |
| 05/30/1990 | EP0370527A1 Method of and apparatus for inspecting substrate |
| 05/30/1990 | EP0370417A1 Biological diagnostic assay system |
| 05/30/1990 | EP0370323A2 High resolution image compression methods and apparatus |
| 05/30/1990 | EP0370248A1 Apparatus for measuring the particle level in the smoke or exhaust gas from a combustion process |
| 05/30/1990 | EP0229085B1 Support used in bioluminescent dosing of enzymes, substrates or enzymatic inhibitors |
| 05/30/1990 | CN2057755U Iron spectrum slice optical density admeasuring apparatus |
| 05/30/1990 | CN1042623A Measuring cell for the spectral analysis of flowing media in paticular polymer melts |
| 05/30/1990 | CN1042606A Measuring method and equipment of polarization-dulling ratio optical fibre and optical system |
| 05/29/1990 | US4930095 Output correction system for analog sensor |
| 05/29/1990 | US4929847 Rapid determination of sludge content and device therefor |
| 05/29/1990 | US4929845 Method and apparatus for inspection of substrates |
| 05/29/1990 | US4929837 Method for detecting pinholes and incomplete coverage of hermetic coatings on optical fiber waveguides |
| 05/29/1990 | US4929829 Method for detecting flooding of a surface |