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)
12/1989
12/12/1989US4885929 Ozone gas sensor and ozone gas detecting device having ozone gas sensor
12/07/1989DE3923420A1 Capacitive measurement method for biosensors
12/07/1989DE3917935A1 Device and method for determining the thermal conductivity and concentration of liquid mixtures
12/07/1989DE3917436A1 Method for gene detection and apparatus therefor
12/07/1989DE3907431A1 Coulometric measuring cell
12/07/1989DE3818614A1 Microcontainer
12/06/1989EP0345052A2 Fluoride ion-selective electrodes based upon superionic conducting ternary compounds and methods of making
12/06/1989EP0344929A2 Apparatus and method for capacitance measurements
12/06/1989EP0344639A2 Thermally switchable katharometer
12/06/1989EP0344558A2 Method and apparatus for detecting short circuits in stacks of iron plates
12/06/1989EP0344345A1 Pumpsystem for a leak detecting apparatus
12/06/1989EP0344314A1 Device for measuring the rate of oxygen consumption by microorganisms in liquid media
12/05/1989US4885697 Method of identifying spectra
12/05/1989US4885696 Signal processing method for determining base sequence of nucleic acid
12/05/1989US4885623 Distributed channel-bipolar device
12/05/1989US4885543 Electrostatic discharge test apparatus
12/05/1989US4885531 Continuous determination and control of the weight of hay bales during the baling process
12/05/1989US4885142 Apparatus in the form of a disk for the separation of oxygen from other gases and/or for the pumping of oxygen and the method of removing the oxygen
12/05/1989US4885078 Metal oxide coating on electrode
12/05/1989US4885077 Composite membrane, method for its preparation and electrolyte sensor including same
12/05/1989US4885076 Separation, analysis
12/05/1989US4884435 Odor identifying apparatus and method
12/05/1989CA1263767A1 Electrical detector of particles, used as a fire detector
11/1989
11/30/1989WO1989011648A1 Process for separation and recovery of charged molecules
11/30/1989WO1989011647A1 Conductance measurements in organic solvents
11/30/1989DE3910636A1 Process for controlling the cuttering process of meat and fish compositions
11/30/1989DE3816626A1 Electrophoresis device, in particular for DNA electrophoresis
11/30/1989DE3816625A1 Apparatus for gel electrophoresis, in particular fluorescence gel electrophoresis
11/29/1989EP0343972A2 Interface for liquid chromotography-mass spectrometry systems
11/29/1989EP0343702A2 Electrochemical analyser
11/29/1989EP0343593A2 Moisture-sensitive element
11/29/1989EP0343590A2 Eddy current probe
11/29/1989EP0343533A2 Gas sensing element
11/29/1989EP0343519A2 Apparatus for determining the susceptibility difference between two gases
11/29/1989EP0343478A1 Process and apparatus for determining the ready for use condition of an air/fuel ratio probe
11/29/1989EP0343210A1 Electrochemical electrodes
11/29/1989EP0343203A1 Immobilised enzyme electrodes and a method for reducing the alcohol sensitivity
11/29/1989CN2048583U Analysis and purifying device for boiling kiln gas
11/29/1989CN2048582U Computerized controlled detector for flamable explosive toxic gas
11/29/1989CN1037617A Hydrogen-sensitive semiconductor element and its manufacturing method
11/29/1989CN1037593A 质谱仪 Mass spectrometer
11/29/1989CN1037592A Current detector for flow system
11/29/1989CN1037591A Low-noise coulomb detector for flow system
11/29/1989CN1005930B Method of manufacturing tantalum-tantalum monoxide ph sensor
11/28/1989US4884200 Signal detecting method in autoradiography
11/28/1989US4884031 Method and apparatus for charge distribution analysis
11/28/1989US4884028 Magnetizing device with yoke having loosely fitted coil sections for magnetographic inspection of quality of materials
11/28/1989US4883958 Interface for coupling liquid chromatography to solid or gas phase detectors
11/28/1989US4883947 Resistance ceramic heater with mutually connected heat-generating conductors, and electrochemical element or oxygen analyzer using such ceramic heater
11/28/1989US4883643 Oxygen sensor protected against contaminants
11/28/1989US4883597 Hydrophobic membrane for drying gel matrices
11/28/1989US4883579 Photoresponsive redox detection and discrimination
11/28/1989US4883577 Electrophoresis device with shark-toothed comb having a thickness determined by the thickness of the gel
11/28/1989US4883566 Zirconia stabilized with calcia and hafnia as support and dielectric
11/28/1989US4883563 Ph sensitive for electrode
11/28/1989US4883057 Cathodic electrochemical current arrangement with telemetric application
11/28/1989CA1263441A1 Determination of electrochemically active components in a process stream
11/28/1989CA1263254A1 Method and apparatus for measuring water in crude oil
11/28/1989CA1263230A1 Method and apparatus for drying gel slabs
11/23/1989EP0342901A2 Binary gas analyzer instrument and analysis method
11/23/1989EP0342820A2 A method of and an apparatus for measuring the concentration of a substance in a sample solution
11/23/1989EP0342513A2 Gas detecting method and system
11/23/1989EP0342382A2 Electrical detection of the imune reaction
11/23/1989EP0342349A1 Contour-clamped homogeneous electric field generator
11/23/1989EP0342212A1 A magnetic particle inspection apparatus and system
11/23/1989DE3842753A1 Uebertrager fuer magnetisches pruefen Transformer and for magnetic JAM
11/23/1989DE3816314A1 Device for monitoring the hydraulic fluid in a brake system, especially a motor-vehicle brake system
11/22/1989CN1037395A Potential digestion analyzer
11/21/1989US4882648 Capacitance probe for use in absorbent systems
11/21/1989US4882571 Sensor used for electrical heating measurement
11/21/1989US4882544 Simple inspection device for analyzer for ionic activity measurment
11/21/1989US4882537 Method and apparatus for reducing interference in an electrical resistance probe during electrolytic plating
11/21/1989US4882292 Process for manufacturing a REFET or a CHEMFET, and the manufactured REFET or CHEMFET
11/21/1989US4882287 Process for indicating the presence of toxic substances in air that is supplied to a personnel-occupied space
11/21/1989US4882033 Electrochemical device
11/21/1989US4882032 Hydrogen probe
11/21/1989US4882031 Gas sensor
11/21/1989US4882030 Air-fuel ratio detection system for engine exhaust gas
11/21/1989US4882029 Electrode system
11/21/1989US4881812 Apparatus for determining base sequence
11/21/1989CA1263152A1 Quadrupole mass filter with unbalanced r.f. voltage
11/21/1989CA1263146A1 Remote conductivity sensor
11/21/1989CA1263145A1 Apparatus for measuring combustible gas concentration in flue gas
11/16/1989WO1989011096A1 Enzyme sensor
11/16/1989DE3915554A1 Membran-biosensor Membrane biosensor
11/16/1989DE3815684A1 Device and circuit arrangement for detecting the formation of black ice
11/16/1989DE3815488A1 Circuit arrangement for the matching of catalytically active measuring sensors for measured variable pick-ups
11/16/1989DE3815004A1 Vorrichtung zur polarographischen messung des sauerstoffgehalts in fluessigen und gasfoermigen medien Apparatus for polarographic measurement of oxygen salary in liquid and houses on gaseous media
11/15/1989EP0342013A2 Fluid leakage sensor
11/15/1989EP0341934A1 Leakage sensor
11/15/1989EP0341933A2 Leakage sensor for electrically conductive liquids
11/15/1989EP0341932A2 A leak detecting sensor
11/15/1989EP0341928A1 Improvements relating to surface plasmon resonance sensors
11/15/1989EP0341906A2 A security system
11/15/1989EP0341859A1 Lithium ion-selective compositions, electrodes and a method of use
11/15/1989EP0341793A2 Buffer solution systems for standardizing ph analyzers and electrolytes
11/15/1989EP0341675A2 Alcohol sensor
11/15/1989EP0341577A2 Electrophoresis gels with a high polyol content
11/15/1989EP0341472A2 Ultramicro electrode and method for its production
11/15/1989EP0341471A2 Method for encapsulating electronic components
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