| 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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| 06/06/1978 | US4093385 Color gradient analyzer |
| 06/06/1978 | US4093382 Hybrid holographic non-destructive test system |
| 05/30/1978 | US4092669 Apparatus for measuring spatial data from recorded images |
| 05/30/1978 | US4092069 Spectrophotometer |
| 05/30/1978 | US4092068 Surface sensor |
| 05/30/1978 | US4091681 Method for the simultaneous determination of low optical bulk and surface absorption coefficients in solids |
| 05/23/1978 | US4091089 Adding antibody, measuring amount of precipitate |
| 05/23/1978 | US4091060 Balling process |
| 05/23/1978 | US4090848 Medical diagnosis |
| 05/23/1978 | US4090847 Determining fire retardancy |
| 05/23/1978 | US4090794 Optical cigarette end inspection device |
| 05/23/1978 | US4090792 Single beam photometer for investigating a specimen |
| 05/23/1978 | US4090791 Device for cyclically repeating a series of colorimetric analysis on each of a succession of samples |
| 05/23/1978 | US4090789 Cuvette positioning device for optical analytical apparatus |
| 05/23/1978 | US4090402 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, diethylene glycol butyl ether acetate, brightener, solvent yellow |
| 05/16/1978 | US4090078 Method and arrangement for determining alcohol content in the breath |
| 05/16/1978 | US4089213 Adding a solvency accelerator selected from carbamide, sodium benzoate, and dihydroxy-benzenes |
| 05/09/1978 | US4088448 Apparatus for sampling, mixing the sample with a reagent and making particularly optical analyses |
| 05/09/1978 | US4088407 High pressure fluorescence flow-through cuvette |
| 05/02/1978 | US4087746 Method for determination of optical anisotropy of dielectric material by microwave |
| 05/02/1978 | US4087690 Spurious radiation compensation in infrared analyzers |
| 05/02/1978 | US4087685 Fluorescent microanalytical system and method for detecting and identifying organic materials |
| 05/02/1978 | US4087185 Blood leak detector |
| 05/02/1978 | US4087184 Method and apparatus for inspecting liquids in transparent containers |
| 04/25/1978 | US4086497 System for inspecting can lids for through the lid flaws |
| 04/25/1978 | US4086061 Temperature control system for chemical reaction cell |
| 04/18/1978 | US4085326 Radiation reflection method and apparatus particularly for gauging materials exhibiting broadband absorption or scattering, or similar effects |
| 04/18/1978 | US4085322 Optical apparatus |
| 04/18/1978 | US4084905 Of chlorophyll in living plants; light emitting diode, phototransistor |
| 04/18/1978 | US4084426 Foam monitor and method |
| 04/11/1978 | US4083638 Cuvette and method of use |
| 04/11/1978 | US4083637 Inspection apparatus for containers with transparent bottoms |
| 04/11/1978 | US4083226 Portable explosion-proof gas detector |
| 04/04/1978 | US4082950 Calibration assembly for infrared moisture analyzer |
| 04/04/1978 | US4082465 Determination of extreme density values of photographic originals |
| 04/04/1978 | US4082460 Graphite tube for use in a flameless atomic absorption spectrometer |
| 04/04/1978 | US4082459 Analytical cell assembly for an analyzer |
| 04/04/1978 | US4082458 Densitometer |
| 03/28/1978 | US4081247 Method and apparatus for the chemiluminescent detection of HCl |
| 03/28/1978 | US4081215 Stable two-channel, single-filter spectrometer |
| 03/21/1978 | US4080169 Determination method for mercury in organic compounds |
| 03/21/1978 | US4080076 Suspended solids analyzer using multiple light sources and photodetectors |
| 03/21/1978 | US4080075 Compensated densitometer |
| 03/14/1978 | US4078896 Photometric analyzer |
| 03/14/1978 | US4078863 Measuring the concentration of substances suspended in a liquid |
| 03/14/1978 | US4078858 Measuring head |
| 03/07/1978 | US4077774 Irradiation with ultraviolet light after oxidation of hydrocarbons |
| 03/07/1978 | US4077724 Optical density measurement |
| 03/07/1978 | US4077720 Spectroscopic auto ellipsometer |
| 03/07/1978 | US4077719 Continuous wave generation of coherent vibrational anti-stokes spectra |
| 02/28/1978 | US4076983 Analysis of emulsions and suspensions |
| 02/28/1978 | US4076426 Method for inspecting cathode-ray-tube window for objectionable cord |
| 02/28/1978 | US4076425 Opacity measuring apparatus |
| 02/28/1978 | US4076424 Multi-channel implicit ratio computer for sequential signals |
| 02/28/1978 | US4076421 Spectrophotometer with parallel sensing |
| 02/28/1978 | US4076420 Apparatus for investigating fast chemical reactions by optical detection |
| 02/21/1978 | US4075498 Non-woven fabric defect detecting device |
| 02/21/1978 | US4075481 Medical-analytical gas detector |
| 02/21/1978 | US4075062 Culturing, defoaming |
| 02/21/1978 | US4074940 Sample cell for use in the optical analysis of liquids |
| 02/21/1978 | US4074939 Apparatus for investigating fast chemical reactions by optical detection |
| 02/21/1978 | US4074809 Apparatus and methods for inspection of can bodies by use of light |
| 02/14/1978 | US4073623 Analytical determination of substances in solution |
| 02/14/1978 | US4073621 Reader recorder for toxic gas concentration tapes |
| 02/14/1978 | US4073590 Laser total reflectometer |
| 02/14/1978 | US4073182 Temperature compensated optical measuring instruments |
| 02/07/1978 | US4072427 Fault inspection system |
| 02/07/1978 | US4072426 Method and apparatus for determining the reflective properties of surfaces, especially coated surfaces |
| 02/07/1978 | US4072424 Optical device for measuring the turbidity of a liquid |
| 01/31/1978 | US4071299 Transmittance densitometer |
| 01/31/1978 | US4071020 Apparatus and methods for performing in-vivo measurements of enzyme activity |
| 01/24/1978 | US4070114 Detector optics for use in fabric inspection |
| 01/17/1978 | US4069420 Optical gas analyzer |
| 01/17/1978 | US4069419 Dry developer composition for dye penetrant inspection and method for employing same |
| 01/17/1978 | US4069017 Colorimetric assay for bilirubin |
| 01/17/1978 | US4068956 Pulsed laser densitometer system |
| 01/10/1978 | US4068222 Circuit arrangement for automatic level control for optical sensors with pulsed radiation, for example for surveillance equipment |
| 01/10/1978 | US4068125 Laser absorption spectroscopy employing varying absorption conditions |
| 01/10/1978 | US4067771 Nuclear reactor containment spray testing system |
| 01/10/1978 | US4067653 Differential optoacoustic absorption detector |
| 01/10/1978 | US4067320 Arrangement for drift compensation in a gas analyzer |
| 01/03/1978 | US4066904 Method of measurement of the concentration of a substance contained in a gas and devices for carrying out said method |
| 01/03/1978 | US4066492 Photodetector |
| 01/03/1978 | US4066365 Temperature control apparatus |
| 01/03/1978 | US4066364 Apparatus for measuring smoke density |
| 01/03/1978 | US4066363 Apparatus and method for inspecting glass containers |
| 01/03/1978 | US4066362 Apparatus and method for performing photometric analysis |
| 01/03/1978 | US4066361 Method and apparatus for deriving oxygen association curves |
| 01/03/1978 | US4066360 Device for measuring and recording spontaneous blood platelet aggregation in platelet-rich citrated plasma |
| 12/27/1977 | US4065358 Apparatus for producing reactions in colorimetric cells |
| 12/27/1977 | US4065213 Apparatus for and method of inspecting tubular textile goods |
| 12/20/1977 | US4064534 System for monitoring the production of items which are initially difficult to physically inspect |
| 12/20/1977 | US4064402 Method and apparatus for suppressing the visible radiation emitted by a source of infra-red radiation |
| 12/20/1977 | US4063895 Methane analyzer |
| 12/20/1977 | US4063823 Workpiece, and container and contents, inspecting apparatus and method |
| 12/20/1977 | US4063822 System for detecting a first light transmissive substance, such as for instance blood, in a second light transmissive, different substance |
| 12/20/1977 | US4063821 Gas detector tube reader |
| 12/20/1977 | US4063817 Chemical reaction velocity measuring apparatus |
| 12/20/1977 | US4063816 Chemical reaction velocity measuring apparatus |
| 12/20/1977 | US4063644 Process for nondestructive inspection |