Patents
Sitemap › G01 - Measuring; Testing › G01N - Investigating or analysing materials by determining their chemical or physical properties › G01N 21 - Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
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)
05/1981
05/27/1981EP0029195A1 Method of determining the refractive index profile of an optical fibre
05/26/1981US4270091 Apparatus and method for measuring pressures and indicating leaks with optical analysis
05/26/1981US4270049 Liquid leakage detection system
05/26/1981US4270041 Process and apparatus for detecting the presence of a physical phenomenon
05/26/1981US4269518 Stray light eliminator in a scatterometer
05/26/1981US4269517 Microscope for quantitative determination of substance in specimen
05/26/1981US4269516 Optode
05/26/1981US4269510 Smoke detector
05/26/1981US4269507 Method and apparatus for pulverizing solid materials with a grindstone and injecting particles thereof into a flame for analysis
05/26/1981US4269068 Ultrasonic couplant compositions and method for employing same
05/20/1981EP0028774A2 Apparatus for detecting defects in a periodic pattern
05/19/1981US4268751 Infrared breath analyzer
05/19/1981US4268173 Reflectometers
05/19/1981US4268172 Method of and system for automatically adjusting a threshold level of a pulse generating circuit to inspect a web
05/19/1981US4268171 Method determining concentration in rate nephelometric immunochemical analysis
05/19/1981US4268169 Flaw detection probe for cylindrical bores
05/19/1981US4268168 Egg candling device
05/19/1981US4267844 Medical instrument for determining jaundice
05/19/1981CA1101240A1 Microbiological testing apparatus and method
05/13/1981EP0028322A1 Method for the detection and identification of material compositions and foreign substances entering a processing line with raw parts or work pieces
05/12/1981US4267444 Device for examining the degree of filling of a cigarette
05/12/1981US4266878 Apparatus for measurement of soil moisture content
05/12/1981US4266877 Photometer with interchangeable calibration cards
05/12/1981US4266872 Method of measuring the amount of reduction of a dot film, and device for practicing same
05/12/1981US4266871 Apparatus for visually duplicating gemstones
05/12/1981US4266554 Digital oximeter
05/06/1981EP0028123A1 Spectrophotometric method for the determination of total bilirubin
05/06/1981EP0027986A1 Simultaneous-analysis device
05/05/1981US4266142 Fluid system and method
05/05/1981US4266131 Gas analyzer
05/05/1981US4266130 Method and apparatus for detecting clear air turbulences
05/05/1981US4265545 Multiple source laser scanning inspection system
05/05/1981US4265544 Liquid agitation apparatus for an absorbance measuring apparatus
05/05/1981US4265538 Optical sample cell for analysis of particles in liquid suspension
05/05/1981US4265536 Electrical zeroing of light beam
05/05/1981US4265535 Oil-in-water method and detector
05/05/1981CA1100419A1 Organic vapor respirator cartridge end-of-service indicator system and method
04/1981
04/28/1981US4264814 Method for detecting trace impurities in gases
04/28/1981US4264211 Light sensor
04/28/1981US4264210 Dot percentage measuring device
04/28/1981US4264209 Gas detector
04/28/1981US4264207 Method and apparatus for determining the quality of oriented polymeric materials
04/28/1981US4264205 Rapid scan spectral analysis system utilizing higher order spectral reflections of holographic diffraction gratings
04/28/1981CA1100022A1 Process for kinetic determination of substrate and reagent for carrying out this process
04/28/1981CA1099951A1 Automatic chemical analysis of biological fluids
04/22/1981EP0027148A1 Optoelectronic device
04/21/1981US4263512 Analyzing blood; correcting for degree of chyle, degree of hemolysis, and degree of icterus
04/21/1981US4263511 Turbidity meter
04/21/1981US4263256 Formed in continuous flexible strip; for use in spectrometers
04/21/1981US4263089 Plasma development process controller
04/21/1981CA1099803A1 Apparatus and method for inspecting glass containers
04/15/1981EP0027099A1 Refractive-index responsive light-signal system
04/15/1981EP0026981A2 Method of measuring moisture permeation
04/15/1981EP0026898A2 Polariscope
04/15/1981EP0026885A1 Filterphotometer
04/15/1981EP0026770A1 Device for hydrodynamic focussing of a particle-suspension in a liquid flow cytophotometer.
04/15/1981EP0026764A1 Apparatus for estimating slant visual range.
04/14/1981US4262205 Fluorometer with high sensitivity and stability
04/14/1981US4262198 Optically monitoring temperature changes in microvolume caused by absorption of optical radiation to be detected; high sensitivity
04/14/1981US4262196 Container inspection apparatus
04/14/1981CA1099393A1 Method and apparatus for inspecting refractory lining in coke oven chambers and the like
04/14/1981CA1099365A2 Automatic capacitor winding machine
04/14/1981CA1099204A1 Method and apparatus for measuring the alcohol concentration in exhalation air
04/08/1981EP0026741A1 Measuring head for a densitometer
04/07/1981US4260899 Wide web laser scanner flaw detection method and apparatus
04/07/1981US4260890 Fluorescent gas analyzer
04/07/1981US4260263 Process and apparatus for measuring the brightness of mill-comminuted products, especially flour
04/07/1981US4260262 Grain quality analyzer
04/07/1981US4260257 Flow cell
04/07/1981CA1098991A1 Method and apparatus for detection of inclusions in glass article or the like
04/07/1981CA1098987A1 Film thickness detector
04/07/1981CA1098823A1 Solid phase immuno assay by measurement of light absorbance
04/07/1981CA1098822A1 Assay method comprising antibody-or antigen- sensitized insoluble carrier particles and irradiation
04/07/1981CA1098809A1 Particle coating analysis and mineral prospecting
04/02/1981WO1981000912A1 Method and apparatus for analysis
04/02/1981WO1981000911A1 Continuous flow automatic chemical analysis systems and components for use therein
04/01/1981EP0026093A1 Oil-in-water monitor
04/01/1981EP0026046A1 Method of and apparatus for monitoring gaseous pollutants
04/01/1981EP0025912A1 2,7-Dialkylfluorescein derivatives and their use in fluorescence immunoassays
03/1981
03/31/1981US4259574 Microanalysis by pulse laser emission spectroscopy
03/31/1981US4259290 Transfer device for analysis equipment
03/31/1981US4259013 Optical method for inspecting spherical parts
03/31/1981US4259011 Optical gem analyzer
03/25/1981EP0025586A1 Device for optical coupling
03/25/1981EP0025491A2 A method and apparatus for detecting one or more spectral features in a sample
03/25/1981EP0025448A1 Device for measuring in a compressible medium the local density and the time variation thereof
03/24/1981US4258360 Optical smoke detector
03/24/1981US4257777 Determining nitric oxide in cigarette smoke
03/24/1981US4257709 Automatic blanking circuit
03/24/1981US4257708 Apparatus for measuring the degree of rinsing
03/24/1981CA1097942A1 Disposable cuvette array
03/24/1981CA1097939A1 Liquid and gas chlorine dioxide photometer
03/19/1981WO1981000775A1 Apparatus for near infrared quantitative analysis
03/18/1981EP0025350A2 Apparatus for detecting luminescent reactions
03/17/1981US4257106 Method and apparatus for thermal imaging
03/17/1981US4256964 Gas analyzer
03/17/1981US4256957 Bottle inspection apparatus
03/17/1981US4256696 Photometric analyzer, chromium, copper, alloy
03/17/1981US4256694 Carbon monoxide monitoring system
03/17/1981US4256693 Lamination, filters, erythrocytes
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