| 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) |
|---|
| 04/05/1977 | US4016423 Infrared analyzer of constant radiant energy |
| 04/05/1977 | US4015904 Optical shoe assembly for use with a multi-sensor optical head |
| 03/29/1977 | US4015127 Monitoring film parameters using polarimetry of optical radiation |
| 03/29/1977 | US4014649 Method and apparatus for delivering blood oxygen association curve information |
| 03/29/1977 | US4014615 Detection of faults in a predetermined area of a surface |
| 03/29/1977 | US4014612 Photometric measuring apparatus |
| 03/29/1977 | US4014610 Line laser beam production and its use in scanning densitometers |
| 03/22/1977 | US4013953 Optical fluid contamination and change monitor processing circuit |
| 03/22/1977 | US4013892 Ir generator having ellipsoidal and paraboloidal reflectors |
| 03/22/1977 | US4013418 Luminescent reaction testing |
| 03/22/1977 | US4013368 Sample cartridge for use in apparatus for evaluation of biological fluid |
| 03/22/1977 | US4013367 Apparatus for detecting irregularities in the surfaces of materials |
| 03/22/1977 | US4013364 Baseline correction in densitometrical measurements |
| 03/22/1977 | US4013260 Gas analyzer |
| 03/15/1977 | US4012634 Automatic focusing system including quantizing means |
| 03/15/1977 | US4012149 Measuring method and equipment for locating a break in an optical cable |
| 03/15/1977 | US4012146 Two wave length, scanning and integration type method of microspectrophotometrically measuring the light absorbancy of a specimen and microspectrophotometer for automatically carrying out the method of measurement |
| 03/15/1977 | US4012145 Spectroscopic analysis apparatus employing measurement and reference radiation |
| 03/15/1977 | US4012144 Spectrosorptance measuring system and method |
| 03/15/1977 | US4012141 Identification of gemstones by relative reflectance measurements coupled with a scale calibrated in gem names |
| 03/15/1977 | US4011859 Method for continuously measuring the CO2 content in breathing gases |
| 03/08/1977 | US4011458 Photoelectric detector with light source intensity regulation |
| 03/08/1977 | US4011457 Web defect monitor for abrupt changes in web density |
| 03/08/1977 | US4011451 Novel photometric system |
| 03/08/1977 | US4011174 Water washable dye penetrant composition and method of application |
| 03/08/1977 | US4011046 Liquid crystal quantitative analysis method for optically active compounds |
| 03/08/1977 | US4011015 Refractometric densitometer |
| 03/08/1977 | US4011013 Multifrequency excitation of gas rotational spectra |
| 03/01/1977 | US4010368 Test apparatus |
| 03/01/1977 | US4010357 Analog visibility computer |
| 03/01/1977 | US4009999 Continuous, quantitative |
| 03/01/1977 | US4009964 Atomic spectroscopy |
| 03/01/1977 | US4009963 Arrangement for producing free atoms of a substance for atomic spectroscopy purposes |
| 02/22/1977 | US4009413 Plasma jet device and method of operating same |
| 02/22/1977 | US4008967 Device for testing masks for semiconductor components |
| 02/22/1977 | US4008963 Method of and device for the analysis of samples by means of flameless atomic absorption spectroscopy |
| 02/22/1977 | US4008961 Monochromatic detection of plural rotational Raman spectra generated by multiple frequency excitation |
| 02/15/1977 | US4008397 Polytetrafluoroethylene, transparent |
| 02/15/1977 | US4008394 Gas analyzing |
| 02/15/1977 | US4007989 Hadamard filter design |
| 02/08/1977 | US4007326 Electronic copy analysis |
| 02/08/1977 | US4007011 Specimen treatment apparatus |
| 02/08/1977 | US4007009 Chemical analysis of ions incorporated in lattices using coherent excitation sources |
| 02/08/1977 | US4006990 Convergent light illuminated flow cell for liquid chromatography |
| 02/08/1977 | US4006988 Photo-electric depth or turbidity meter for fluid suspensions |
| 02/01/1977 | US4006360 Method of discriminating between dyed particles and background fluorescence of the dye |
| 02/01/1977 | US4006358 Method and apparatus for measuring the amount of moisture that is associated with a web of moving material |
| 02/01/1977 | US4005926 Scanning device |
| 01/25/1977 | US4005434 Method and apparatus for graphic densitometer display |
| 01/25/1977 | US4005281 Defect identification with normalizing of gain function in optical-electrical inspection |
| 01/18/1977 | US4004239 Discrimination circuit for isolating disturbance signals which are superimposed on D.C. pedestals |
| 01/18/1977 | US4004153 Apparatus for monitoring a web of material |
| 01/18/1977 | US4004152 Apparatus for monitoring a moving web of material for faults |
| 01/18/1977 | US4004150 Analytical multiple component readout system |
| 01/18/1977 | US4004146 Infrared gas analyzing photometer with chopper designed to avoid radiation waste |
| 01/18/1977 | US4003707 Method and arrangement for measuring the concentration of gases |
| 01/18/1977 | US4003663 Device for calibrating instrument that measures circular dichroism or circularly polarized luminescence |
| 01/18/1977 | US4003662 Portable photometer |
| 01/18/1977 | US4003661 Apparatus for detecting contamination of liquid |
| 01/11/1977 | US4002905 Biodegradable nonionic surfactant and a dye |
| 01/11/1977 | US4002823 Method and apparatus for video inspection of articles of manufacture |
| 01/04/1977 | US4001667 Constant current-pulse led drive circuit |
| 01/04/1977 | US4001595 Multiple wavelength transmissometer |
| 01/04/1977 | US4000975 Reacting interior protein of grain to fluoresce |
| 01/04/1977 | US4000949 Photomask inspection by optical spatial filtering |
| 12/28/1976 | US4000422 Method of luminescence detection of surface discontinuities |
| 12/28/1976 | US4000252 Immunoscintillation cell |
| 12/28/1976 | US3999948 Diagnostic reagent holder and method |
| 12/28/1976 | US3999868 Unit for use in optical analysis |
| 12/28/1976 | US3999867 Sampling cell of salt crystals amalgamated to metal spacer |
| 12/28/1976 | US3999864 Gloss measuring instrument |
| 12/28/1976 | US3999863 Apparatus for measuring light absorption |
| 12/28/1976 | US3999862 Apparatus for optically analyzing a solution |
| 12/28/1976 | US3999861 Flow cell |
| 12/28/1976 | US3999860 Apparatus for textile color analysis |
| 12/28/1976 | US3999857 Refractive index detector |
| 12/28/1976 | US3999856 Diffractometric refractometer |
| 12/28/1976 | US3999855 Illumination system |
| 12/21/1976 | US3999062 Spectrophotometer for dual mode fluorescence analysis |
| 12/21/1976 | US3999047 Method and apparatus utilizing color algebra for analyzing scene regions |
| 12/21/1976 | US3998594 Cuvette for automatic chemical testing apparatus |
| 12/21/1976 | US3998592 Thermoelectric heat pump for chemiluminescence detectors |
| 12/21/1976 | US3998591 Spectrochemical analyzer using surface-bound color reagents |
| 12/21/1976 | US3998557 Gas detector |
| 12/21/1976 | US3998552 Instrument responsive to back-scattered or back-reflected radiation having passive system for range correction |
| 12/21/1976 | US3998551 Device for measuring stimulus values of the color of a liquid |
| 12/21/1976 | US3998550 Photoelectric oximeter |
| 12/14/1976 | US3997786 System for spectroscopic analysis of a chemical stream |
| 12/14/1976 | US3997404 Method and apparatus for characterizing biologically active agents |
| 12/14/1976 | US3997271 Device for calibrating a transmissometer |
| 12/07/1976 | US3996494 Light intensity monitoring and adjusting apparatus for xenon lamp type light fastness tester |
| 12/07/1976 | US3996476 Low noise photoelectric detector apparatus |
| 12/07/1976 | US3996339 Reduction of nitrogen dioxide to nitrogen monoxide with ferrous sulfate |
| 12/07/1976 | US3996010 Breathing gas analyzer |
| 12/07/1976 | US3995960 Method and apparatus for background signal reduction in opto-acoustic absorption measurement |
| 12/07/1976 | US3995957 Internally referenced, laser intracavity technique for measuring small gains or losses |
| 12/07/1976 | US3995483 Method for making visible defects in surfaces |
| 11/30/1976 | US3995157 Surface flaw detection |
| 11/30/1976 | US3994603 Detection system to determine the transmissivity of a medium with respect to radiation, particularly the light transmissivity of smoke-contaminated air, for fire detection |
| 11/30/1976 | US3994602 Optical reflectance gauge and method therefor |