| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 02/12/1991 | US4992738 Device for the measuring of gas, vapor or aerosol fractions of a measured gas |
| 02/12/1991 | US4992735 Remotely |
| 02/12/1991 | US4992732 Method and apparatus for magnetic testing of metallic work pieces |
| 02/12/1991 | US4992659 Near-field lorentz force microscopy |
| 02/12/1991 | US4992384 Measuring apparatus and method of use for analyzing a gas mixture |
| 02/12/1991 | US4992381 Method of detecting electrolytes in an aqueous test sample using chromogenic hemispherands and test device therefor |
| 02/12/1991 | US4992244 Films of dithiolene complexes in gas-detecting microsensors |
| 02/12/1991 | US4992172 Polyaldehyde activation microporous membrane |
| 02/12/1991 | US4991424 Integrated heatable sensor |
| 02/12/1991 | US4991283 Sensor elements in multilayer ceramic tape structures |
| 02/12/1991 | CA2060183A1 Self-supporting thin-film filament detector, process for its manufacture and its applications to gas detection and gas chromatography |
| 02/07/1991 | WO1991001496A1 Method and apparatus for non-destructive testing |
| 02/07/1991 | WO1991001494A1 Device for determining the moisture content of gases |
| 02/06/1991 | EP0411874A2 System and method for remotely inspecting the interior walls of a cavity |
| 02/06/1991 | EP0411793A2 Preparation of conductive films and their use as gas sensors |
| 02/06/1991 | EP0411776A1 Sensor driver circuit |
| 02/06/1991 | EP0411689A1 Method for continuously monitoring the soundness of the protective covering on underground metal structures, and devices for its implementation |
| 02/06/1991 | EP0411443A2 Apparatus for classifying meat |
| 02/06/1991 | EP0411229A1 Capacitance humidity sensor |
| 02/06/1991 | EP0411204A1 Method for the determination of the alcohol content and/or the calorific value of fuels |
| 02/06/1991 | EP0411127A1 Ion-sensitive film, a process for producing the same, and ion sensor |
| 02/06/1991 | EP0411042A1 Apparatus for conducting a plurality of simultaneous measurements of electrochemiluminescent phenomena. |
| 02/06/1991 | CN2070911U Permanent-magnetic nondestructive flaw detection apparatus |
| 02/06/1991 | CN1049056A Detector of surface crack extension parameter |
| 02/06/1991 | CN1011549B Automatic iron analyzing system |
| 02/06/1991 | CN1011548B Method for locating interface between a piece of stainless steel and metal added by weld |
| 02/06/1991 | CN1011545B Measuring method of differential polarization resistance and measuring apparatus |
| 02/05/1991 | US4991128 Apparatus and methods for spectral analysis of electrical materials, components and devices |
| 02/05/1991 | US4990855 Conductivity probe for use in the presence of high intensity nuclear radiation |
| 02/05/1991 | US4990851 Transient electromagnetic method for detecting irregularities on conductive containers |
| 02/05/1991 | US4990236 Electrical measurement |
| 02/05/1991 | US4990235 Oxygen sensor |
| 02/05/1991 | CA1279934C Method and measuring instrument for identifying the diffusion length ofthe minority charge carriers for non-destructive detection of flaws and impurities in semiconductor crystal bodies |
| 02/05/1991 | CA1279896C Eletrochemical micro sensor |
| 02/04/1991 | WO1991001995A1 High gel strength and low electroendosmosis agarose |
| 02/02/1991 | CA2021859A1 Method for continuously monitoring the soundness of the protective covering on underground metal structures, and devices for its implementation |
| 01/31/1991 | DE3924644A1 Measurement arrangement for oxygen and unburnt fuel in exhaust gas - contains cell for adding oxygen in series with cell for extracting free oxygen |
| 01/31/1991 | DE3924634A1 Electrical hygrometer sensor - has resistive film on substrate and contains hydrophilic material resulting in moisture dependent resistance |
| 01/30/1991 | EP0410810A1 System for measuring electrokinetic properties and for characterizing electrokinetic separations by monitoring current in electrophoresis |
| 01/30/1991 | EP0410665A2 Discharge ionization detector |
| 01/30/1991 | EP0410356A1 Taste sensing system using artificial lipid membranes |
| 01/30/1991 | EP0410341A2 Method and apparatus for interfacing chromatographic equipment with a mass spectrometer |
| 01/30/1991 | EP0410253A2 Device for carrying out a comprehensive quality control on printed sheets |
| 01/30/1991 | EP0410154A2 Rotor bore inspection system |
| 01/30/1991 | EP0410131A1 Near-field Lorentz force microscopy |
| 01/30/1991 | EP0409896A1 Enzymatic electrode and its preparation method. |
| 01/30/1991 | CN2070446U Hydrogen content tester for humun body breathing out gas |
| 01/30/1991 | CN1011453B Hydrogen-sensitive semiconductor element and its manufacturing method |
| 01/29/1991 | US4988970 Semiconductor for a resistive gas sensor having a high response speed |
| 01/29/1991 | US4988949 Apparatus for detecting excessive chafing of a cable arrangement against an electrically grounded structure |
| 01/29/1991 | US4988948 Method for the automatic line calibration of a sensor for measuring the concentration of a liquid phase dissolved electrochemical substance |
| 01/29/1991 | US4988946 Paramagnetic gas measuring apparatus |
| 01/29/1991 | US4988868 Ion detector |
| 01/29/1991 | US4988628 Method of drug detection |
| 01/29/1991 | US4988588 Miniature porous electrode and method of making |
| 01/29/1991 | US4988568 Crosslinked copolymers of unsaturated amides, esters, and acids; narrow particle size distribution |
| 01/29/1991 | US4988539 Method of manufacturing a gas detection sensor, and the resulting sensor |
| 01/29/1991 | US4988429 Measuring cell for an electrochemical gas sensor |
| 01/29/1991 | US4988428 NOx concentration measuring apparatus |
| 01/29/1991 | US4988418 Quantitative analysis of acids with graphite electrodes electrically |
| 01/29/1991 | US4987767 Exposive detection screening system |
| 01/29/1991 | CA2021198A1 System for measuring electrokinetic properties and for characterizing electrokinetic separations by monitoring current in electrophoresis |
| 01/29/1991 | CA2020863A1 Non-invasive system and method for inspection of valves |
| 01/29/1991 | CA1279698C Debris detector |
| 01/24/1991 | WO1991000998A1 Glucose-level measurement device |
| 01/24/1991 | DE4021853A1 Ion selective sensor with failure indication - uses pH selective glass bulb with amplifier connected to output producing zero voltage if tube rupture occurs |
| 01/23/1991 | EP0409705A1 Apparatus for continously producing a ionic standard solution |
| 01/23/1991 | EP0409362A2 Method of operating an ion trap |
| 01/23/1991 | EP0409013A2 Vehicle exhaust gas measuring procedure and device |
| 01/23/1991 | EP0408959A2 Electrochemical measuring cell for the detection of prussic acid or sulphur dioxide |
| 01/23/1991 | EP0408678A1 A process and device for temperature measurement using the internal resistance of a lambda probe |
| 01/23/1991 | EP0408641A1 Piezoelectric specific binding assay with mass amplified reagents. |
| 01/23/1991 | EP0408617A1 Sensor for verification of genuineness of security paper. |
| 01/23/1991 | EP0190200B1 Eddy current flaw detector method and apparatus |
| 01/23/1991 | EP0155969B1 Heat-resistant casing for ionization type smoke sensor |
| 01/23/1991 | CN2070001U Flaw detector for railroad-clamping plate |
| 01/23/1991 | CN2070000U Meat moisture content tester |
| 01/23/1991 | CN1048770A Hydrogen-sensitive element and manufacturing method thereof |
| 01/23/1991 | CN1011343B Apparatus for automatic determining characteristic magnitudes of textile material to be tested |
| 01/22/1991 | US4987367 Method and apparatus for predicting deterioration of a member constituting a part of equipment |
| 01/22/1991 | US4987082 Control of foam build up in a fermenter |
| 01/22/1991 | US4987010 Method for manufacturing a film resistor |
| 01/22/1991 | US4986892 Oxygen sensor |
| 01/22/1991 | US4986891 Automatic electrophoresis apparatus and method |
| 01/22/1991 | CA2021531A1 Method and apparatus for photoinductive imaging |
| 01/22/1991 | CA1279371C Heated solid electrolyte oxygen sensor |
| 01/22/1991 | CA1279370C Method for measuring periodontal pocket gases |
| 01/22/1991 | CA1279243C Aqueous compositions for visual inspection and cleaning of metallic surfaces |
| 01/21/1991 | WO1991001495A1 Electrochemical cell, reference electrode and electrochemical method |
| 01/21/1991 | CA2063821A1 Electrochemical cell, reference electrode and electrochemical method |
| 01/17/1991 | DE3922148A1 Gas partial pressure sensor - with threaded parts with hard and soft sealing contact portions |
| 01/17/1991 | DE3922147A1 Gas partial pressure sensor - with detection circuit for deficient sealing of electrolyte space |
| 01/17/1991 | DE3921845A1 Quantitative determn. of thin layer chromatography fractions - by processing various materials pyrolysed by microwave or laser |
| 01/16/1991 | EP0408288A1 An ion mirror for a time-of-flight mass spectrometer |
| 01/16/1991 | EP0408134A2 Device and methodology for characterizing superconductive materials |
| 01/16/1991 | EP0408039A2 Marginal current detector for measuring the partial pressure of a gas |
| 01/16/1991 | EP0408009A2 Scanning tunneling spectroscope and a spectroscopic information detection method |
| 01/16/1991 | EP0407668A1 Steam quality monitoring means |
| 01/16/1991 | EP0407653A1 Method for the determination of the alcohol content and/or the calorific value of fuels |
| 01/16/1991 | EP0407539A1 Plasma mass spectrometer. |