Patents
Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839)
05/1989
05/30/1989US4834842 Method of measuring the effective inhibitor concentration during a deposition of metal from aqueous electrolytes and test apparatus therefor
05/30/1989US4834101 Catheter-type electrochemical sensors
05/30/1989US4834051 Oxygen sensor and an air-fuel ratio control apparatus of an internal combustion engine using the same
05/30/1989US4833909 Gas-sensing apparatus
05/30/1989CA1254830A1 Examining cells by electrophoresis
05/24/1989EP0317483A1 Method for determining the reliability of male contraceptives
05/24/1989EP0317299A2 Odor identifying apparatus and method
05/24/1989EP0317255A2 Leak detecting apparatus
05/24/1989EP0317239A2 Method and device for improved restriction fragment length polymorphism analysis
05/24/1989EP0316514A1 Switched field ion mobility spectrometry (IMS)
05/24/1989EP0316380A1 Electrochemical sensor with solid phase electrolyte.
05/24/1989EP0316327A1 Method and apparatus of belt testing
05/24/1989DE3816867C1 Device and method for the determination of the proportions of the components of a mixture
05/24/1989DE3811865C1 Measurement device for measuring the oxygen partial pressure in aggressive liquids at high temperature
05/24/1989DE3737215A1 Elektrochemischer messfuehler Electrochemical measurement sensor
05/24/1989CN2038238U Humidity-sensitive sensor
05/24/1989CN1033108A Plastic container inspection process
05/24/1989CN1033107A Manufacturing method of tantalum-tantalum monoxide ph sensor
05/23/1989US4833413 Salinity measuring system
05/23/1989US4833332 Scanning fluorescent detection system
05/23/1989US4832818 Porous stabilized zirconia electrolytic plate
05/23/1989US4832817 Simple inspection device for analyzer for ionic activity measurement
05/23/1989US4832815 Wavelength dispersion electrophoresis apparatus
05/23/1989US4832797 Enzyme electrode and membrane
05/23/1989CA1254617A1 Transparent multi-oxygen sensor array
05/18/1989WO1989004481A1 Interface circuit for use in a portable blood chemistry measuring apparatus
05/18/1989WO1989004480A1 Electrochemical sensor
05/18/1989WO1989004479A1 Electrode system for use in a portable blood chemistry measuring apparatus
05/18/1989WO1989004474A1 A portable blood chemistry measuring apparatus
05/18/1989WO1989004364A1 Bioelectrochemical reactions in organic solvents
05/18/1989DE3836819A1 Gasfuehler mit phtalocyanin Gasfuehler with phthalocyanine
05/17/1989EP0316260A2 Method for the analytical determination of the content of chlorinated hydrocarbons
05/17/1989EP0315887A2 Eddy current flaw detecting apparatus and method
05/17/1989EP0315854A1 Measurement method for moisture content in the skin and apparatus therefor
05/17/1989EP0315790A1 Chemical sensors and their divided parts
05/17/1989EP0315788A2 Ion sensor
05/17/1989CN2037846U Sensor for pincerlike moisture teller
05/16/1989US4831493 Windshield moisture sensor
05/16/1989US4831332 Continuous adjusting apparatus for detecting gaseous impurities with a corona discharge
05/16/1989US4831325 Capacitance measuring circuit
05/16/1989US4831324 Method and apparatus for analyzing the electrode inpedance
05/16/1989US4831254 Ion drift detector
05/16/1989US4830830 Apparatus for determining base sequence of nucleic acid
05/16/1989US4830727 Composite probe for measuring the concentration of an impurity element in molten iron
05/16/1989US4830726 Separation of large DNA molecules in alternating asymmetric electric fields
05/16/1989US4830725 Electrophoresis apparatus
05/16/1989US4830713 Regeneration method and device
05/16/1989US4829837 Robotic liquid separation sensing using a cannula
05/16/1989US4829810 Filament drive circuit
05/16/1989US4829809 Gas calibration method and apparatus
05/16/1989CA1254265A1 Lift-off compensation of eddy current probes
05/11/1989DE3736333A1 Heavy-current cable having a moisture sensor
05/11/1989DE3736307A1 Method and apparatus for determining the solids content and the water content in fluxes (particularly at low solids content) in automatic soldering machines
05/10/1989EP0314919A2 Combustible gas detector having temperature stabilization capability
05/10/1989EP0314726A1 Process and installation for determining the thickness of layers in layered semi-conductors
05/10/1989EP0314688A1 Method and apparatus for amperometric detection
05/10/1989CN2037477U Portable thermoelectric measurement apparatus
05/09/1989USRE32920 Testing blood for copper and iron
05/09/1989US4829253 Three wire amplifier circuit with diagnostic capabilities
05/09/1989US4829246 Apparatus having inductively coupled coaxial coils for measuring buildup of slay or ash in a furnace
05/09/1989US4829238 Method and apparatus for monitoring electromagnetic emission levels
05/09/1989US4829163 Crack detector for heated glass panel
05/09/1989US4829007 Process for detecting a plateable metal in an aqueous fluid
05/09/1989US4828800 Ionization
05/09/1989US4828673 Apparatus for measuring combustible gas concentration in flue gas
05/09/1989US4828672 Unitary self-generating reference gas sensor
05/09/1989US4828671 Unitary self-referencing combined dual gas sensor
05/09/1989US4828670 Electrophoretic support medium and method of making same
05/09/1989US4828669 Electrophoresis device with removable buffer tank
05/09/1989US4828589 Filter unit with apparatus for determining the saturation of a drying cartridge
05/09/1989US4827780 Automatic pipetting apparatus
05/09/1989CA1253919A1 Remote conductivity sensor having coplanar transformer cores in fluid flow path
05/05/1989WO1989004061A1 Microelectrochemical devices and method of detecting
05/05/1989WO1989003991A1 Methods of detecting micro-organisms
05/05/1989WO1989003988A1 A magnetic particle inspection system and a cable unit for use therein
05/05/1989WO1989003871A1 Immobilised enzyme electrodes and a method for reducing the alcohol sensitivity
05/05/1989WO1989003721A1 Textile for manufacturing electrophoresis gels
05/03/1989EP0314088A2 Conductivity measuring device
05/03/1989EP0314045A2 Wavelength dispersion electrophoresis apparatus
05/03/1989EP0313658A1 Moisture remover
05/03/1989EP0313657A1 Reference electrode
05/03/1989EP0313629A1 A system employing a biosensor to monitor a characteristic of a select component in a medium
05/03/1989DE3839948A1 Electrophoresis apparatus for carrying out horizontal or vertical gel electrophoresis
05/03/1989DE3736205A1 Modified glass-fibre membranes, method for manufacturing them, and their use for protein-chemical analysis
05/03/1989DE3736200A1 Method of operating a semiconductor gas sensor working on the calorimeter principle and having a plurality of sensor elements
05/03/1989DE3736087A1 Gewebe zur herstellung von elektrophoresegelen Tissue for the production of electrophoresis gels
05/03/1989DE3735873A1 Appliance for fractionating solutions
05/03/1989DE3734634A1 Integrated process for the electrochemical modification of a chemical sensor and an array of chemical sensors
05/02/1989US4827216 Differential triple-coil tester for wire rope with periodic lay effect cancellation
05/02/1989US4827215 Method of and apparatus for magnetic saturation testing a wire rope for defects
05/02/1989US4827154 Control system for air cleaner
05/02/1989US4826771 Procedure to be performed in conjunction with protein blotting or nucleic acid blotting
05/02/1989US4825683 Apparatus for evaluating an oxygen sensor
05/02/1989CA1253569A1 Test medium and method for detecting phosphorus segregates in metallic material
05/02/1989CA1253568A1 Assay for salicylate and apparatus for performing same
04/1989
04/27/1989DE3835339A1 Arrangement for the examination of ions, atoms and molecules in gases and liquids
04/27/1989DE3835081A1 Verfahren und einrichtung zur analyse organischer verbindungen mittels der chromatographie Method and device for the analysis of organic compounds by means of chromatography
04/26/1989EP0313546A2 Method and arrangement for calibrating a measuring device
04/26/1989EP0313411A1 Methods of detecting micro-organisms
04/26/1989EP0313390A2 Gas sensor and method for production thereof