| 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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| 12/08/1981 | CA1113763A1 Dark field illuminator and collector apparatus and method |
| 12/02/1981 | EP0040798A2 Ion exchange chromatography with indirect photometric detection |
| 12/02/1981 | EP0040648A1 Method and apparatus for detecting misalignment of mechanical shafts |
| 12/01/1981 | US4303859 Infra-red analysis apparatus and method |
| 12/01/1981 | US4303832 Process for assessing the quality of a printed product |
| 12/01/1981 | US4303752 Selective determination of nucleotides in viable somatic and microbial cells |
| 12/01/1981 | US4303616 Agglutination analyzing vessel |
| 12/01/1981 | US4303611 Analyzer apparatus featuring a simplified incubator |
| 12/01/1981 | US4303410 Light burst activity analyzer |
| 12/01/1981 | US4303343 Optoacoustic spectroscopy of condensed matter in bulk form |
| 12/01/1981 | US4303342 Method and apparatus for detecting foreign matters in liquids |
| 12/01/1981 | US4303339 Graphite tube assembly |
| 12/01/1981 | US4303337 Apparatus for determining hemoglobin and white blood cell count in blood |
| 12/01/1981 | US4303336 Method and apparatus for making a rapid measurement of the hematocrit of blood |
| 12/01/1981 | CA1113569A1 Secondary light testing in optical smoke detectors |
| 12/01/1981 | CA1113392A1 Luminescent immunoassay |
| 11/25/1981 | EP0040586A1 A device for reading the optical signal provided by a refractometer |
| 11/25/1981 | EP0033335A4 Refractively scanned interferometer. |
| 11/24/1981 | US4302773 Defect inspection system |
| 11/24/1981 | US4302772 Device for the televisual inspection of the inner surface of a closed cylindrical vessel |
| 11/24/1981 | US4302678 For uv radiation, uranium oxide-containing borosilicate glass on heat conductive support |
| 11/24/1981 | US4302536 Colorimetric immunoassay process |
| 11/24/1981 | US4302421 Method and apparatus for flushing a delivery tube for automatic liquid sample supply apparatus |
| 11/24/1981 | US4302420 Analyzer featuring a contacting reflectometer |
| 11/24/1981 | US4302206 Uv source |
| 11/24/1981 | US4302108 Detection of subsurface defects by reflection interference |
| 11/24/1981 | US4302105 Detection apparatus for finding holes in webs |
| 11/24/1981 | CA1113178A1 Method and apparatus for the inspection of buttons |
| 11/24/1981 | CA1113175A1 Drier control process for powdered milk |
| 11/24/1981 | CA1112896A1 Optical particle detector |
| 11/18/1981 | EP0039825A1 Cuvette rotor for analyzer and method of operation of said cuvette rotor |
| 11/18/1981 | EP0039761A2 Fire annunciating arrangement and method |
| 11/18/1981 | EP0039718A1 Method and apparatus for determining the concentration of a substance contained in particles carried by a flowing medium. |
| 11/18/1981 | EP0039701A1 Liquid flow photometer. |
| 11/17/1981 | US4301372 Portable fluorescence instrument |
| 11/17/1981 | US4301115 Support with hydrophobic barrier layer with affixed spaced apart reagents responsive to various materials |
| 11/17/1981 | US4301114 Permeabile to the flow of nitrogen oxide gas |
| 11/17/1981 | US4300908 Solvent extraction and quantitative measurement of fluorescence |
| 11/17/1981 | US4300905 Using a 2,18-phosphomolybdic acid carrier, acid buffer and an alkali chlorate |
| 11/17/1981 | US4300834 Inductively coupled plasma atomic fluorescence spectrometer |
| 11/17/1981 | US4300833 Method for background corrected simultaneous multielement atomic absorption analysis |
| 11/17/1981 | US4300689 Dual wavelength spectrophotometer for ampoule leak detection and content inspection |
| 11/17/1981 | CA1112473A1 Method and combination for detecting specific binding substances |
| 11/17/1981 | CA1112472A1 Methods for testing optical fibres |
| 11/12/1981 | WO1981003224A1 Flow-through optical analyzer |
| 11/12/1981 | WO1981003223A1 Apparatus for assisting the visual assessment of test objects having multivariate visible characteristics,and its use |
| 11/11/1981 | EP0039533A1 Densitometer |
| 11/11/1981 | EP0031842A4 Method for selective determination of conjugated or unconjugated bilirubin. |
| 11/10/1981 | US4300203 Method and means for operating logarithmic circuits |
| 11/10/1981 | US4300133 Smoke detector |
| 11/10/1981 | US4300049 Dynamically standardized radiant energy method and apparatus for plural channel gain independent material property measurement |
| 11/10/1981 | US4299593 Colorimetric analysis |
| 11/10/1981 | US4299495 Density meter |
| 11/10/1981 | US4299494 Measurement of heat transfer between a specimen and an ambient medium |
| 11/10/1981 | US4299493 Auto-optical centering device for photometers |
| 11/10/1981 | US4299487 Method of and device for analyzing one ingredient in a mixed solution with two light beams of different wavelengths |
| 11/10/1981 | US4299486 Spectrofluorometer |
| 11/10/1981 | US4299443 Apparatus for detecting the defects of a pattern with directional characteristics using a filter having arm sections of curved shape |
| 11/04/1981 | EP0039145A1 A device for use in identification of groups of samples analysed in a multi-channel analyser |
| 11/04/1981 | EP0039088A1 Apparatus for determining the concentration of an organic solute in a suspended solid particles containing liquid |
| 11/03/1981 | US4298808 Defect detection |
| 11/03/1981 | US4298807 Process for inspecting the physical state of a printed document and an installation for putting the process into operation |
| 11/03/1981 | US4298570 Tray section for automated sample handling apparatus |
| 11/03/1981 | US4298345 Method and apparatus for chemical spot test analysis |
| 11/03/1981 | US4298284 Method and apparatus for measuring magnetooptic anisotropy |
| 11/03/1981 | US4298283 Interferometric measuring method |
| 11/03/1981 | US4298282 Gauge for measuring carpet soiling |
| 11/03/1981 | CA1111929A1 Optical smoke detector with scattered light collecting elements |
| 11/03/1981 | CA1111925A1 Method of examining the surface of a continuously cast metal strip for detection of scarfs appearing thereon and apparatus for the same |
| 11/03/1981 | CA1111762A1 Fluorescent rare earth chelate in polymeric latex particles |
| 11/03/1981 | CA1111746A1 Test-kit and method for the estimation of lp-x |
| 10/28/1981 | EP0038549A1 Method and device for spectrometric detection of elements on the surface of a solid body |
| 10/28/1981 | EP0038378A1 Pellet inspection apparatus |
| 10/27/1981 | US4297688 Photoelectric smoke sensing and alarming device |
| 10/27/1981 | US4297587 Absolute DC system for a laser inspection system |
| 10/27/1981 | US4297585 System for the detection of splicing defects in film |
| 10/27/1981 | US4297579 Bi-frequency infrared spectrometer |
| 10/27/1981 | US4297578 Airborne dust monitor |
| 10/27/1981 | US4297577 Radiation detection of gas compositions |
| 10/27/1981 | US4297105 Automatic photometric titrator |
| 10/27/1981 | US4297035 Method and device for detecting a specific spectral feature |
| 10/27/1981 | US4297032 Dark field surface inspection illumination technique |
| 10/27/1981 | CA1111279A1 Test method for evaluating faults on printed sheets and webs |
| 10/21/1981 | EP0038254A1 Process and apparatus for continuously and automatically measuring and adjusting the water, fat, non-fat milk solid (proteins and lactose) and salt content of butter and cheese curds |
| 10/21/1981 | EP0038134A2 Method of and apparatus for detecting the presence of live organisms in substances |
| 10/21/1981 | EP0038064A2 Gas analyser for the determination of the ammonia content in a mixture of gases |
| 10/21/1981 | EP0038033A1 Circuit arrangement for the detection of stains on an object |
| 10/20/1981 | US4296358 High-voltage spark source |
| 10/20/1981 | US4296333 Method and apparatus for detecting surface defects in a workpiece |
| 10/20/1981 | US4296326 Watermark detection |
| 10/20/1981 | US4296086 Monitoring process and apparatus |
| 10/20/1981 | US4295949 Method for determining boundary points in electrophoresis |
| 10/20/1981 | US4295854 Apparatus and methods for sample enrichment for flameless atomic absorption spectroscopy |
| 10/20/1981 | US4295743 Apparatus for determining faults in strip material |
| 10/20/1981 | US4295470 Optical catheters and method for making same |
| 10/20/1981 | US4295362 Pentaerythritol in dry developers |
| 10/20/1981 | CA1110873A1 Instrument for determining the distinctness of image of a paint film |
| 10/20/1981 | CA1110870A1 Cross-flow nebulizer |
| 10/14/1981 | EP0037761A1 Method for measuring the global reflectance of a sample and reflectometer for carrying it out |
| 10/14/1981 | EP0037694A1 Apparatus for the inspection of translucent containers |