| 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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| 04/27/1976 | US3953127 Photon-counting integrating nephelometer |
| 04/20/1976 | US3952196 Radiation detection apparatus |
| 04/20/1976 | US3951854 Stabilized analytical standards |
| 04/20/1976 | US3951721 Method of forming a mechanically strong reflective surface |
| 04/20/1976 | US3951608 Mixing cuvette and timing turntable for providing reaction mixtures |
| 04/20/1976 | US3951607 For pulmonary use |
| 04/20/1976 | US3951602 Spectrophotometric formaldehyde-copper monitor |
| 04/20/1976 | US3951098 House plant water content indicator |
| 04/20/1976 | US3950942 Control apparatus for a warp knitting machine |
| 04/13/1976 | US3950649 Vertical reflection type fluorescence microphotometer |
| 04/13/1976 | US3950644 Non-dispensive infrared gas analyzer |
| 04/13/1976 | US3950642 Method of inspecting shot peened surfaces for extent of coverage |
| 04/13/1976 | US3950104 Refractive index and flow rate detector and method |
| 04/13/1976 | US3950102 Analysis lamp, particularly for the examination of precious stones |
| 04/13/1976 | US3950101 Measuring the heating value of a fuel in the gaseous state: method and apparatus |
| 04/13/1976 | US3949601 Open-loop water-washable inspection penetrant process |
| 04/06/1976 | US3949234 Smoke detector device |
| 04/06/1976 | US3949231 Infrared radiating unit for infrared analyzers |
| 04/06/1976 | US3948345 Methods and means for analyzing substances |
| 04/06/1976 | US3948281 Gas blending using null balance analyzer |
| 04/06/1976 | US3948092 Method of recovering and re-cycling water-washable inspection penetrants |
| 03/30/1976 | US3947685 Method and arrangement for determining nitric oxide concentration |
| 03/30/1976 | US3947131 Windshield soil detector |
| 03/30/1976 | US3947125 Atomic absorption and fluorescence spectroscopy |
| 03/30/1976 | US3947124 Analytical spectroelectrochemistry |
| 03/30/1976 | US3947122 Cuvette and stirrer for oximeter |
| 03/30/1976 | US3947120 Gem identification |
| 03/30/1976 | US3947088 Interface for light probe |
| 03/30/1976 | US3946597 Flaw penetrant test panel |
| 03/23/1976 | US3946241 Light detector with pulsed light source and synchronous data gating |
| 03/23/1976 | US3946239 Ellipsoidal cell flow system |
| 03/23/1976 | US3946235 Helium resonance lamp and a leak detection system using the lamp |
| 03/23/1976 | US3945801 Indicator providing continuous indication of the presence of a specific pollutant in air |
| 03/16/1976 | US3944834 Pollution monitor with self-contained calibration and cell-block therefor |
| 03/16/1976 | US3944828 Hydrophobic powdered developer for fluorescent penetrant inspection |
| 03/16/1976 | US3944369 Optical comparator system to separate unacceptable defects from acceptable edge aberrations |
| 03/16/1976 | US3944368 Apparatus for color analysis of precious stones |
| 03/09/1976 | US3943368 Method and apparatus for compensating reflection losses in a path length modulated absorption-absorption trace gas detector |
| 03/09/1976 | US3942900 Quality control monitor for medicinal capsule packaging apparatus |
| 03/09/1976 | US3942899 Calibrating device for light scatter photometering instrument |
| 03/09/1976 | US3942898 Densitometer for measuring the density of an optical element such as a film badge |
| 03/09/1976 | US3942897 Method and apparatus for detecting solid substances contained in liquid |
| 03/09/1976 | US3942892 Apparatus and method for the spectroscopic analysis of solid metal articles |
| 03/02/1976 | US3942021 Apparatus for optimizing the yield of usable pieces from boards and the like |
| 03/02/1976 | US3942001 Inspection of containers |
| 03/02/1976 | US3941686 Inspection machine memory |
| 03/02/1976 | US3941487 Colorimetric fluid analyzer |
| 03/02/1976 | US3941485 Device for continuously measuring a dimension of a workpiece by reflected light |
| 03/02/1976 | US3941482 Method of testing alkali halide crystals with anisotropic centers |
| 03/02/1976 | US3941478 Second harmonic analyzer |
| 03/02/1976 | US3941019 Method and apparatus for cutting lumber and the like |
| 02/24/1976 | US3940623 Apparatus for measuring the proportion or quantity of a component in a radiation-transparent mixture |
| 02/24/1976 | US3940557 Subtractive image analysis |
| 02/24/1976 | US3940250 Testing using luminescent reaction |
| 02/24/1976 | US3940037 Discharge from hoppers |
| 02/17/1976 | US3939350 Fluorescent immunoassay employing total reflection for activation |
| 02/17/1976 | US3939348 Infrared gas analysis |
| 02/17/1976 | US3939092 Water washable dye penetrant and method for utilizing same |
| 02/17/1976 | US3938888 Automated precision flame-emission photometric apparatus |
| 02/17/1976 | US3938550 Continuous flow ratio monitor |
| 02/17/1976 | US3938365 Detecting trace gaseous species acoustically in response to radiation from an intense light source |
| 02/10/1976 | US3938058 Tunable laser |
| 02/10/1976 | US3938049 Baseline correction system for pulse trains |
| 02/10/1976 | US3937962 Correction of two beam photometer for fluid analysis |
| 02/10/1976 | US3937581 Analytic cell for use in high-speed ultra centrifuges |
| 02/10/1976 | US3937577 Zeeman effect atomic absorption spectrometer |
| 02/10/1976 | US3937576 Illumination system for an atomic absorption spectral photometer |
| 02/03/1976 | US3936196 Fluid chamber having manipulatable window elements |
| 02/03/1976 | US3936192 Optical fluid contamination and change monitor |
| 02/03/1976 | US3936190 Fluorescence spectrophotometer for absorption spectrum analysis |
| 02/03/1976 | US3936189 On-line system for monitoring the color, opacity and brightness of a moving web |
| 02/03/1976 | US3935731 Method and means for improving flaw entrapment efficiency in water-washable inspection penetrants |
| 01/27/1976 | US3935468 Light responsive detector |
| 01/27/1976 | US3935463 Spectrophotometer |
| 01/27/1976 | US3935459 Apparatus and method of automatically zeroing an exhaust emission analyzer |
| 01/27/1976 | US3935458 Method for monitoring the surface resistivity of metallized film |
| 01/27/1976 | US3934965 Optical coupler |
| 01/20/1976 | US3934199 Method of testing an electrical circuit |
| 01/20/1976 | US3934149 Method of identifying enemy forces |
| 01/20/1976 | US3933888 Production of unsaturated acids, esters and nitriles, and catalyst therefor |
| 01/20/1976 | US3933430 Constant flow system for detection of amino acids |
| 01/13/1976 | US3932767 Filter-discriminator circuit |
| 01/13/1976 | US3932762 Apparatus for measuring radiation angle dependence |
| 01/13/1976 | US3932754 Gas analyzer |
| 01/13/1976 | US3932042 Container inspection apparatus and method of inspection |
| 01/13/1976 | US3932041 Construction unit for two beam photometers |
| 01/13/1976 | US3932040 Self-equalizing industrial photometer |
| 01/13/1976 | US3932038 Apparatus for the continuous measurement of the density of a liquid by utilization of the law of refraction |
| 01/13/1976 | US3931733 Method and means of accelerating removal of background entrapments in the inspection penetrant process |
| 01/06/1976 | US3931526 Process and a device for measuring transmission factors |
| 01/06/1976 | US3931525 Detection of blemishes in surfaces |
| 01/06/1976 | US3931462 Stack plume visualization system |
| 01/06/1976 | US3930994 Method and means for internal inspection and sorting of produce |
| 01/06/1976 | US3930726 System for measuring volumetric ratios of liquid suspended solids |
| 01/06/1976 | US3930407 Water-washable inspection penetrant employing mineral solvent and a fatty acid solubility promoter |
| 03/15/1954 | WO1984001028A1 Image monochromator |