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)
12/1991
12/11/1991CN2090534U High input impedance ionometer
12/11/1991CN2090533U Metal corrosion resistant coating tester
12/11/1991CN1015076B Heavy colour hollow globular shape magnet powder and making method
12/11/1991CN1015075B Light colour hollow globular shape magnet powder and making method
12/11/1991CN1015072B Method and apparatus for non-destructive materials testing and magnetostructural materials investigations
12/10/1991US5072262 Electric-electronic device including polyimide thin film
12/10/1991US5072235 Method and apparatus for the electronic detection of air inside a thermal inkjet printhead
12/10/1991US5072116 Microprobe preparation thereof and electronic device by use of said microprobe
12/10/1991US5072115 Interpretation of mass spectra of multiply charged ions of mixtures
12/10/1991US5071771 Identification of wood species
12/10/1991US5071770 Sensing selected compounds in a gas effluent by voltage activation and time; frequency domain response
12/10/1991US5071733 Irradiating built-up polymer layers, dissolving irradiated portions; heat, chemical resistance, mechanical properties
12/10/1991US5071721 Matrix immobilized electrolyte
12/10/1991US5071626 Copper oxide ceramic sensing element, electric circuit responsive to conductivity
12/10/1991US5071537 Reference electrode
12/10/1991US5071536 High resolution continuous flow electrophoresis
12/10/1991US5071531 Casting of gradient gels
12/10/1991US5071528 Measuring electrical potential difference between reference electrode and contact element of oxygen-ion conducting material; reference gas detects external leaks
12/10/1991US5071527 Measureing current during oxidation/reudction cycle and cuductivity
12/10/1991US5071526 Acidic gas sensors and method of using same
12/10/1991US5070725 Water-cut monitoring means and method
12/10/1991US5070721 Flammable gas detection
12/10/1991CA1293024C Ferromagnetic eddy current probe
12/10/1991CA1293023C Unitary self-referencing combined dual gas sensor
12/09/1991CA2043694A1 Eddy current probe, incorporating multi-bracelets of different pancake coil diameters, for detecting internal defects in ferromagnetic tubes
12/09/1991CA2038603A1 Metal-free buffer for ion selective electrode-based assays
12/07/1991CA2042690A1 Variable width electrophoresis device
12/07/1991CA2041988A1 Ferromagnetic eddy current probe having multiple levels of magnetization
12/05/1991DE4117913A1 Alcohol concn. sensor appts. - uses electrodes of capacitor connected to oscillator for IC engine injected with petrol alcohol mixt.
12/04/1991EP0459782A2 Amperimetric measurement with cell electrode deplating
12/04/1991EP0459707A1 Medium for electrophoresis
12/04/1991EP0459613A1 Biosensors
12/04/1991EP0459511A2 Apparatus for measuring concentration of test substance in a liquid
12/04/1991EP0459441A2 Method and system for inspection of electroconductive film using eddy current and process and system for production of optical fibers using method and system
12/04/1991EP0459278A1 Fluorescent pattern reading apparatus
12/04/1991EP0459241A1 Process and apparatus for effecting capillary electrophoresis
12/04/1991EP0459214A1 Fluorescence detection type gel electrophoresis
12/04/1991CN2090060U Precision coulomb burette electric tank
12/04/1991CN2090059U Intelligent multi-run mineral thermoelectrometer
12/04/1991CN1056749A Friction lubricating status testing device
12/03/1991US5070318 Alkali earth stannate, free of silicon and boron impurities
12/03/1991US5070300 Apparatus for measuring breakdown plasma
12/03/1991US5070240 Apparatus and methods for trace component analysis
12/03/1991US5070023 Blood gas analysis
12/03/1991US5069773 Sealed compartments containing acrylamide monomer and polymeri zation catalyst that contact on rupture of seal
12/03/1991US5069769 Automatic analysis of dna sequences
12/03/1991US5069766 Viscosity-raising additive in anolyte, catholyte or both solut ions
12/03/1991US5069069 Polyether sulfone copolymer
12/03/1991CA2043613A1 Reference electrode for chemical sensors
12/03/1991CA1292811C Ion mobility detector having reactor region and drift region formed of insulative tubing having conductive field producing elements on outside of tubing
12/03/1991CA1292773C Sensor for electrochemical measurement and method for diagnosing corrosion protective properties of metal surface coating by using the sensor
12/02/1991CA2041577A1 Medium for electrophoresis
12/01/1991CA2043347A1 Method and system for inspection of electroconductive film using eddy current and process and system for production of optical fibres using method and system
11/1991
11/28/1991WO1991018287A1 Pin hole detector
11/28/1991WO1991018286A1 Domestic watering indicator
11/28/1991WO1991017815A1 Apparatus and methods for isoelectric focusing
11/28/1991WO1991014940A3 Measuring cell for determining the flow potential
11/27/1991EP0458622A2 Method and apparatus for collection and analysis of desquamated skin particulates or other tissue
11/27/1991EP0458425A2 Electromagnetic transducer with permanent magnet
11/27/1991EP0458402A1 Hemispherand ionophores having increased lipophilicity
11/27/1991EP0458368A2 Oxygen sensor
11/27/1991EP0458288A2 Method and apparatus for measurement of alcohols
11/27/1991EP0458058A2 Methode for operating a measuring system for the determination of the content of combustible gases
11/27/1991EP0457979A1 Scanning micromechanical probe control system
11/27/1991EP0457788A1 Process and device for monitoring the occurrence or spreading of fractures or cracks in materials, workpieces, component parts, structures or flying objects, in particular in earthquake-prone regions or movement of strata during tunnelling.
11/27/1991EP0457776A1 Gas detector.
11/27/1991CN1056598A Automatic tester for pinhole and withstanding voltage of enamelled wire
11/27/1991CN1056581A Magnetic powder flaw detector for ring parts
11/26/1991WO1991018554A1 Method and apparatus for detecting glove adulteration
11/26/1991US5068619 Conductivity measuring device
11/26/1991US5068617 Capacity probe for liquid measurements
11/26/1991US5068608 Multiple coil eddy current probe system and method for determining the length of a discontinuity
11/26/1991US5068519 Magnetic document validator employing remanence and saturation measurements
11/26/1991US5068205 Header mounted chemically sensitive ISFET and method of manufacture
11/26/1991US5068176 Method for the simultaneous determination of dna sequence variations at a large number of sites, and a kit suitable therefor
11/26/1991US5068090 For conversion of carbonic acid in solution to carbonate salt, then measurement of electroconductivity
11/26/1991US5068088 Method and apparatus for conducting electrochemiluminescent measurements
11/26/1991US5068019 Analysis of proteins with polymer membrane sheets with hydroxypropyl cellulose, triphenyl phosphate, tricresyl phosphate and mixtures
11/26/1991US5067345 Method and apparatus for measuring and calculating bulk water in crude oil or bulk water in steam
11/26/1991CA2083602A1 Method and apparatus for detecting glove adulteration
11/26/1991CA1292439C Field-inversion gel electrophoresis
11/22/1991CA2026587A1 Hemispherand inophores providing increased assay precision
11/21/1991EP0457748A1 Pulsed field capillary electrophoresis
11/21/1991EP0457526A2 Gel electrophoresis system
11/21/1991EP0457143A1 Reference electrode combined with a measuring probe, diaphragm for such electrode and method of producing this diaphragm
11/21/1991EP0456787A1 Selective gas detection by field separation and sound velocity measurement: detection of oxygen.
11/21/1991EP0456776A1 Apparatus for automatically and non-destructively determining the class of standardized mechanical properties of a sample of hygroscopic material.
11/21/1991EP0456765A1 Porous substrates with a high concentration of amine groups
11/21/1991EP0456700A1 Ion mobility detector.
11/21/1991EP0434742A4 Disposable sensing device for real time fluid analysis
11/21/1991EP0411042A4 Apparatus for conducting a plurality of simultaneous measurements of electrochemiluminescent phenomena
11/20/1991WO1991018299A1 Device for sensing magnetism
11/20/1991CN2089174U Tri-phase pulse conductance porosimeter
11/20/1991CN1056353A Method for determining solute in high-temperature water
11/20/1991CN1056261A Multifunctional free-electrophoresis technology
11/20/1991CN1014834B Gas chromatography detector
11/20/1991CA2064083A1 Magnetism detecting apparatus
11/19/1991WO1991018288A1 Gas chromatograph-mass spectrometer (gc/ms) system for quantitative analysis of reactive chemical compounds
11/19/1991US5066918 Apparatus and method for measuring lateral charge distribution on a moving web
11/19/1991US5066582 Method and apparatus for the measurement of analyte substances
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