| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 04/04/1991 | WO1991004587A1 Primary source of electrical energy using a mixture of fuel and oxidizer |
| 04/04/1991 | WO1991004570A1 Method of preparing a sample for analysis |
| 04/04/1991 | WO1991004486A1 Sensing method and device for aggregation control |
| 04/04/1991 | WO1991004485A1 Solid-state oxygen sensor |
| 04/04/1991 | WO1991004095A1 Stable, covalently-bonded supports for chemical separation apparatus made through a hydride intermediate |
| 04/04/1991 | WO1991004085A1 Method and apparatus for electrophoretic separations |
| 04/04/1991 | DE3932247A1 Elektrodenmaterial, elektroden, verfahren zur herstellung und verwendung der elektrode Electrode material electrodes, methods of making and use of the electrode |
| 04/04/1991 | DE3932246A1 Messelektrodenanordnung zum messen in fluessigkeiten Measuring electrode arrangement for measuring in liquids |
| 04/04/1991 | DE3931971A1 Preparing appts. with enrichment column for liq. analysis specimens - has fraction collector, pump, containers connected via liq. lines and air bubble detectors controlling by=pass or blocking device |
| 04/04/1991 | DE3921536A1 Electrochemical sensor with wide indication range - includes converter unit and gas sensor electrode |
| 04/03/1991 | EP0420683A2 Method of evaluating the physiological activities and structural characteristics of medicinal substances |
| 04/03/1991 | EP0420147A1 Magnetic defect detector for steel strip |
| 04/03/1991 | EP0420107A1 Oxygen sensor with solid electrolyte |
| 04/03/1991 | EP0419769A2 Method for continuously monitoring an electrode system for potentiometric measurements |
| 04/03/1991 | EP0419652A1 Polymeric electrophoresis media. |
| 04/03/1991 | EP0419509A1 Conductance measurements in organic solvents. |
| 04/03/1991 | EP0346384A4 Method and system for determining organic matter in an aqueous solution |
| 04/03/1991 | EP0185761B1 Eddy current flaw detector having rotatable field defining sleeve |
| 04/03/1991 | CN2074455U Magnetic-powder flaw-detector for circular parts |
| 04/03/1991 | CN2074454U Nondestructive testing electroprobe |
| 04/03/1991 | CN1012286B Method and apparatus for detecting short-circuit between sheets of pile sheet cores |
| 04/02/1991 | US5005015 Ice detection system |
| 04/02/1991 | US5004998 Ion-measuring apparatus for use in process |
| 04/02/1991 | US5004726 Apparatus and methodology for the non-contact testing of materials for superconductivity by detecting odd harmonics above a threshold |
| 04/02/1991 | US5004724 Measurement Of Defects And Flaws In Metal Shapes |
| 04/02/1991 | US5004700 Using polyvinyl alcohol |
| 04/02/1991 | US5004584 Device for testing fluids |
| 04/02/1991 | US5004583 Analytical Measurement Of A Solution |
| 04/02/1991 | US5004543 Charge-modified hydrophobic membrane materials and method for making the same |
| 04/02/1991 | US5004532 Amperometric cell |
| 04/02/1991 | US5003831 Process for monitoring a device for automatically detecting and evaluating surface cracks |
| 04/02/1991 | US5003812 Gas detecting device |
| 04/02/1991 | CA1282458C Membrane anchor for ion-selective electrodes |
| 03/28/1991 | WO1991005246A1 Capacitance humidity sensor |
| 03/28/1991 | WO1991004781A1 Instrument and method for the laser desorption of ions in mass spectrometry |
| 03/28/1991 | DE4027905A1 Oxygen gas sensor sensitive at low and high oxygen partial pressure - consists of high purity cerium-oxide to which noble metal electrodes are attached |
| 03/28/1991 | DE3931235A1 Solid electrolyte gas-sensor without ionic transfer - uses minority carrier transport to make it free of surface polarisation and able to operate at low temperature |
| 03/28/1991 | DE3930853A1 Interrupting ventilation of motor vehicle when passing foul air area - using sensor sensitive to harmful material but having sensitivity reduced when windscreen wiper operates |
| 03/28/1991 | DE3930768A1 Chemo- and bio-sensor system for ion conc. determn. without contact - by measuring interface potential with variable capacity |
| 03/27/1991 | EP0419196A2 Determining the concentration of water soluble species in biological fluid |
| 03/27/1991 | EP0419167A1 Isotopic composition analyzer |
| 03/27/1991 | EP0418886A2 Apparatus and method for minimizing the effects of an electrolyte's dissolved oxygen content in low range oxygen analyzers |
| 03/27/1991 | EP0418785A2 Method and apparatus for mass spectrometric analysis |
| 03/27/1991 | EP0418404A1 Method of determining optimum operating conditions in an electrochemical detector and electrochemical detector using the method |
| 03/27/1991 | EP0418384A1 Enzyme sensor |
| 03/27/1991 | EP0418359A1 Micro-multi-electrode arrangement |
| 03/27/1991 | EP0418355A1 Process for immobilizing proteins, peptides, coenzymes, etc. on a substrate. |
| 03/27/1991 | EP0290522B1 Device for generating and detecting magnetic material structures at atomic levels |
| 03/27/1991 | EP0287599B1 Sensor for controlling air circulation valves of motor vehicles |
| 03/27/1991 | EP0281602B1 Determination of biomass |
| 03/26/1991 | US5003267 Measuring electrical impedance of low conductivity samples to monitor microbial growth |
| 03/26/1991 | US5003262 Eddy current system with interference signal rejection |
| 03/26/1991 | US5003059 Determining DNA sequences by mass spectrometry |
| 03/26/1991 | US5002658 Water purification device and method |
| 03/26/1991 | US5002652 Plasma polymerized polysiloxane membrane |
| 03/26/1991 | US5002651 Modified microelectrodes with renewable surface and method of making same |
| 03/26/1991 | US5002644 Method for monitoring sulfates and chlorides at low concentration |
| 03/26/1991 | CA1282136C Monitoring of foreign object ingestion in engines |
| 03/21/1991 | WO1991003735A1 Process for making a moisture sensor |
| 03/21/1991 | WO1991003734A1 Use of a swellable plastic and process for making a resistive moisture sensor |
| 03/21/1991 | WO1991003636A1 Process and device for checking the operability of an exhaust gas probe heater and its supply system |
| 03/21/1991 | CA2025991A1 Method and apparatus for mass spectrometric analysis |
| 03/21/1991 | CA2025715A1 Apparatus and method for minimizing the effect of an electrolyte's dissolved oxygen content in low range oxygen analyzers |
| 03/20/1991 | EP0417968A1 Method and apparatus for electrochemical analysis and an aqueous solution for use therein |
| 03/20/1991 | EP0417936A2 Water-cut monitoring means and method |
| 03/20/1991 | EP0417925A2 High performance microcapillary gel electrophoresis |
| 03/20/1991 | EP0417796A2 Hematocrit measuring instrument |
| 03/20/1991 | EP0417602A1 Metal-metal oxide electrode for measuring chlorine |
| 03/20/1991 | EP0417571A1 System and electrode for "in situ" monitoring the quality of high temperature water in power plants |
| 03/20/1991 | EP0417347A1 Electrochemical detector |
| 03/20/1991 | EP0417140A1 Method and apparatus for conducting electrochemiluminescence measurements. |
| 03/20/1991 | CN1050091A Magnetic particle inspection field strength indicator |
| 03/20/1991 | CN1050090A Hydrogen-cracking detector for nodes in ocean platform |
| 03/19/1991 | US5001531 Field effect transistor detectors, conductive carbide layer between a substrate, an organic thin film |
| 03/19/1991 | US5001453 Humidity sensor |
| 03/19/1991 | US5001436 Device for measuring the water content of a substrate, in particular the skin |
| 03/19/1991 | US5001426 Magnetometer for measuring the magnetic moment of a specimen |
| 03/19/1991 | US5001417 Apparatus for measuring electrolytes utilizing optical signals related to the concentration of the electrolytes |
| 03/19/1991 | US5001070 Method for determining the total carbonate content of a fluid |
| 03/19/1991 | US5001067 Determining the concentration of water soluble species in biological fluid |
| 03/19/1991 | US5001053 Method and apparatus for measuring the product of an antigen-antibody reaction |
| 03/19/1991 | US5001048 Electrical biosensor containing a biological receptor immobilized and stabilized in a protein film |
| 03/19/1991 | US5000579 Frost and dew sensor |
| 03/19/1991 | US5000036 Tool wear detector |
| 03/19/1991 | CA2025327A1 Determining the concentration of water soluble species in biological fluid |
| 03/19/1991 | CA1281680C Electrolytic cell with electrode material in a non-conducting pipe |
| 03/19/1991 | CA1281510C Procedure for controlling cellulose digestion |
| 03/13/1991 | EP0416419A2 Immobilized alcohol oxidase, method for its preparation and measuring apparatus |
| 03/13/1991 | EP0416234A2 Electrophoresis apparatus |
| 03/13/1991 | EP0416197A1 Method and apparatus to alter the exhaust gas content of an internal-combustion engine |
| 03/13/1991 | EP0416160A1 Apparatus for measuring the partial pressure of gases or vapours |
| 03/13/1991 | CN2073168U Protector with ion sensing field-effect device |
| 03/13/1991 | CN1049912A Rotor bore inspection system |
| 03/13/1991 | CN1049911A Detector for cathode protection condition of offshore platform panel point |
| 03/13/1991 | CN1049910A Manufacture of self-sustainings film filament type sensor and application of same |
| 03/13/1991 | CN1012031B Controlled power supply for overspeed automatic chemical analyser |
| 03/13/1991 | CN1012019B 生物传感器 Biosensor |
| 03/13/1991 | CN1012018B Scale plate of apparatus for measuring ionic concentration and like and scale method thereof |
| 03/13/1991 | CN1012017B Overspeed automatic chemical analyzer and analytical test method |
| 03/13/1991 | CN1012016B Double sensitive film air sensor for both gases of alcohol nitrogen dioxide |