Patents
Sitemap › G01 - Measuring; Testing › G01N - Investigating or analysing materials by determining their chemical or physical properties › G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839)
03/1989
03/29/1989EP0309256A2 Determination of amylase
03/29/1989EP0309236A2 Microprobe, preparation thereof and electronic device by use of said microprobe
03/29/1989EP0309104A2 Analysing the oxygen content of gases in industrial processes
03/29/1989EP0309085A2 A detector device
03/29/1989EP0309067A2 Electrochemical device
03/29/1989EP0308948A2 Patterned thin film and process for preparing the same
03/29/1989EP0308888A2 Method and apparatus for detecting embrittlement of a measuring object
03/29/1989EP0308718A2 Apparatus for marking particular spots of a submarine construction
03/29/1989EP0308523A1 Method of measuring the degree of activity of an ion exchange filter
03/29/1989EP0308455A1 Circuit arrangement for evaluating a signal produced by a semiconductor sensor.
03/29/1989EP0308420A1 Method for detection of alien matter contents in gases.
03/29/1989CN2035087U High-frequency condensator fast water component detector
03/29/1989CN2035086U Oil water component probe with inductuner
03/28/1989US4817021 Moisture and density determination
03/28/1989US4816888 Multilayer transistor-titanium, dielectric and noble metal
03/28/1989US4816800 Exhaust gas sensor
03/28/1989US4816760 Method and apparatus for detecting the position of an edge of a test piece
03/28/1989US4816749 Electrocemical sensor
03/28/1989US4816748 Electronic thermohygrometer with square-wave pulse signal generator
03/28/1989US4816132 Sheet type electrode
03/28/1989US4816131 Semipermeable liquid membrane
03/28/1989US4816130 Blood electrolyte sensors including crosslinked polyetherurethane membranes
03/28/1989US4816123 Method of fabricating capillary electrophoresis separation channels
03/28/1989US4816118 Multilayer-isolation membrane, ion sensitive coating
03/28/1989CA1251871A1 Fourier transform ion cyclotron resonance mass spectrometer with spatially separated sources and detector
03/28/1989CA1251654A1 Method and vibrating capacitor apparatus for analysis of a substance or of at least one component of a mixture of substances
03/23/1989WO1989002594A1 pH MONITOR
03/23/1989WO1989002593A1 Noise reduction technique for electrochemical cells
03/23/1989WO1989002592A1 Tip construction of a reference electrode
03/23/1989WO1989002591A1 Analytical apparatus, electrode and sample container for use therewith
03/23/1989WO1989002574A1 Method and device for inspection of spherical metal balls
03/23/1989DE3828648A1 Hand-held device for monitoring the carbon dioxide content of the air
03/23/1989DE3729681A1 Process for producing ion-selective and material-selective glass electrodes
03/22/1989EP0308304A1 Method for analysing a sample by etching with a beam of particles, and apparatus therefor
03/22/1989EP0308073A2 System for detecting stray metal in articles
03/22/1989EP0308004A2 Capacitive void fraction measurement apparatus
03/22/1989EP0307973A2 An ISFET chip suitable to be used in an apparatus comprising a measuring circuit for selectively measuring ions in a liquid
03/22/1989EP0307790A2 Electrochemical gas sensor
03/22/1989EP0307583A2 Ion selective part of an arrangement for determining ion concentration and procedure for manufacturing hydrophilic groups containing polymeric materials
03/22/1989EP0307424A1 Process for cleaning the indicator electrode of a titrator for the determination of water content by the k. fischer method and device for carrying out the process
03/22/1989EP0146638B1 Method for measuring transformation rate
03/22/1989CN2034694U Inspection device for checking water drop in lubricating oil
03/21/1989US4814705 Method and apparatus for magnetic discontinuity detection in a specimen of magnetizable material
03/21/1989US4814702 Process for accurately determining the position of the edges of support plates in steam generators
03/21/1989US4814690 Apparatus and methods for measuring permittivity in materials
03/21/1989US4814281 Differential conductivity sulfate monitor
03/21/1989US4814197 Control of electroless plating baths
03/21/1989US4814090 Electrical conductivity
03/21/1989US4814062 Membrane reference electrode
03/21/1989US4814061 Hot gas measuring probe
03/21/1989US4814060 Ion selective electrodes and method of making such electrodes
03/21/1989US4814059 Electrochemical device having a heater and leak protection electrode
03/21/1989US4814058 Measuring electrode assembly
03/21/1989US4814057 Electrophoretic apparatus
03/21/1989US4814045 Removing contaminated particles to prevent clogging of diffusion resistor
03/21/1989US4813424 For measuring concentrations in aqueous media
03/21/1989US4813423 Instrument for measuring living body components
03/21/1989US4813267 Thermal conductivity detector
03/21/1989CA1251516A1 Capacitive chemical sensor for detecting certain analytes, including hydrocarbons in a liquid medium
03/21/1989CA1251515A1 Chromatography system comprising electrode coated with permeable membrane
03/21/1989CA1251514A1 Ion selective field effect transistor sensor
03/15/1989EP0307332A2 Method and apparatus for the electrophoresis of very big macromolecules
03/15/1989EP0307143A2 Method for determining the concentration of a plurality of combustible gases in a stream
03/15/1989EP0307008A2 Reactor for application to a gas chromatographic system
03/15/1989EP0306802A1 Chiral crown ethers
03/15/1989EP0306792A2 Slag detector apparatus for molten steel process control
03/15/1989EP0148267B1 Method and device for detecting damage to buried object
03/15/1989EP0144443B1 Method for measuring coagulation of milk
03/14/1989US4812741 Baler-mounted continuous moisture monitoring system
03/14/1989US4812740 Coating detector for low emissivity glass
03/14/1989US4812649 Control in mass analyzer
03/14/1989US4812329 Fuel cells
03/14/1989US4812249 Testing system
03/14/1989US4812221 Fast response time microsensors for gaseous and vaporous species
03/14/1989US4812220 Immobilization, transducer, ph glass electrode, ion sensitive transistor
03/14/1989US4812216 Method of handling and transporting a transfer membrane used in a blotting apparatus
03/14/1989US4812210 Measuring surfactant concentration in plating solutions
03/09/1989WO1989002084A1 Magnetic bridge devices
03/09/1989WO1989002083A1 A high resolution magnetometer
03/09/1989WO1989002074A1 SENSOR ELEMENT FOR LIMIT SENSORS FOR DETERMINING THE lambda VALUE OF GASEOUS MIXTURES
03/09/1989WO1989002073A1 Limiting current-type sensor for polarographic measurement
03/09/1989DE3728537A1 Method for measuring the ion concentration in a solvent, and arrangement for implementing the method
03/09/1989DE3728434A1 Oxygen testing
03/08/1989EP0306333A2 Method and apparatus for the determination of isotopic composition
03/08/1989EP0306332A2 Method and apparatus for the determination of isotopic composition
03/08/1989EP0306307A2 Plastic container inspection process
03/08/1989EP0306239A2 Liquid leakage sensor
03/08/1989EP0306183A2 Oil leakage sensor
03/08/1989EP0306158A2 Cartridge with sensor
03/08/1989EP0305963A1 Method for analysing a gas mixture
03/08/1989EP0305961A2 Electrochemical measuring cell with acid electrolyte
03/08/1989EP0305769A2 Redox electrode for the determination of nitrous acid and nitrosyl compounds
03/08/1989EP0305377A1 Multiple sample radioactivity detector
03/08/1989EP0156915B1 Ionization type smoke sensor
03/08/1989CN2033903U Walking-stick type contact detector for alluvial gold
03/08/1989CN1003541B Measuring equipment for oxygen concentration ard its fabrication method
03/07/1989US4811218 Real time scanning electrophoresis apparatus for DNA sequencing
03/07/1989US4810966 Inductive sensor arrangement and measuring arrangement for use thereof
03/07/1989US4810963 Method for investigating the condition of a bacterial suspension through frequency profile of electrical admittance
03/07/1989US4810882 Mass spectrometer for positive and negative ions
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