| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 06/02/1981 | US4270543 Silver-silver chloride electrode |
| 05/28/1981 | WO1981001470A1 Apparatus and method for detecting wet and icy conditions on the surface of a pathway |
| 05/27/1981 | EP0029284A1 Method for the electrophoretic separation of proteins, a buffer solution and buffer compositions therefor |
| 05/27/1981 | EP0029070A1 Apparatus for surface inspection and treatment of steel members |
| 05/27/1981 | EP0029023A1 A device for detecting and measuring small capacitance variations |
| 05/26/1981 | US4270088 Method and apparatus for magnetically testing metal tapes |
| 05/26/1981 | US4270085 Humidity detecting apparatus |
| 05/26/1981 | US4270041 Process and apparatus for detecting the presence of a physical phenomenon |
| 05/26/1981 | US4269685 Disposable polarographic gas sensor system |
| 05/26/1981 | US4269684 Apparatus for oxygen partial pressure measurement |
| 05/26/1981 | US4269683 An electrode of lead/leadoxide/lead sulfate and an electrode of a group 4 or 8 metal/group 4 or 8 oxide connected to a high impedance voltmeter; measurement of amount of polar liquid in a less polar one; sensitivity |
| 05/26/1981 | US4269682 Having a surface coating of a hydrophobic organic polymeric membrane; miniaturization; detection and measurement of activity and concentration of ions; medical/diagnosis |
| 05/26/1981 | US4269195 Apparatus for measuring a pulmonary function |
| 05/26/1981 | CA1102016A1 Adjustable ionization chamber |
| 05/26/1981 | CA1101962A1 Humidity sensor alarm unit |
| 05/20/1981 | EP0028826A2 Electrochemical measuring apparatus for determining the oxygen content in gases, and its use |
| 05/20/1981 | EP0028793A2 Method for measuring metabolic activity of animal or plant tissues |
| 05/19/1981 | US4268791 Dual trace automatic eddy current detection system for multilayer structures |
| 05/19/1981 | US4268480 Device for measuring a physical operating characteristic of an ozonizer |
| 05/19/1981 | US4268370 High temperature, CO2 interference free, electrochemical O2 sensor |
| 05/19/1981 | CA1101490A1 Monitoring effects of a liquid on metallic installations |
| 05/12/1981 | US4267505 Failure sensor for a gas detector |
| 05/12/1981 | US4267504 Device for measuring a quantity which influences a field-effect transistor |
| 05/12/1981 | US4267457 Sample holding element for mass spectrometer |
| 05/12/1981 | US4267030 Apparatus for checking gas analysis devices |
| 05/12/1981 | US4267023 Chemically integrating dosimeter and gas analysis methods |
| 05/12/1981 | US4266979 Oxygen sensor ceramic and process for preparing the same |
| 05/12/1981 | US4266942 Method for the automatic electro-chemical determination of the end point of a titration |
| 05/12/1981 | US4266519 System for controlling an oxygen concentration in exhaust gases |
| 05/12/1981 | CA1101070A1 Nonconductive vapor/solid or liquid fraction determination |
| 05/12/1981 | CA1101069A2 Absolute humidity sensors and methods of manufacturing humidity sensors |
| 05/12/1981 | CA1101068A1 Absolute humidity sensors and methods of manufacturing humidity sensors |
| 05/12/1981 | CA1100800A1 Device in concrete blocks |
| 05/06/1981 | EP0028168A1 Device for measuring the oxygen level in combustion gases |
| 05/05/1981 | US4266196 Gas detecting means utilizing electric discharge |
| 05/05/1981 | US4266195 Water detector |
| 05/05/1981 | US4266188 Method and apparatus for measuring a component in a flow stream |
| 05/05/1981 | US4266186 Measuring changes in electrical resistance on surfaces |
| 05/05/1981 | US4266185 Probes and apparatus for and methods of measuring crack depths |
| 05/05/1981 | US4265930 For purifying exhaust gases |
| 05/05/1981 | US4265724 Electrochemical sensor, particularly oxygen sensor to determine exhaust gas composition from automotive internal combustion engines |
| 05/05/1981 | US4265714 Gas sensing and measuring device and process using catalytic graphite sensing electrode |
| 05/05/1981 | CA1100602A1 Galvanic exhaust gas sensor with solid electrolyte |
| 04/30/1981 | WO1981001198A1 Device allowing the detection in solids,liquids or gases,of the metal particles included,the location thereof and the determination of their size |
| 04/29/1981 | EP0027748A1 Ion mobility detector for either simultaneous or sequential detection of positive and negative ions |
| 04/29/1981 | EP0027525A1 Test probe for investigating the surface of a metallic test piece |
| 04/29/1981 | EP0027517A1 Scanning apparatus for surface analysis using vacuum-tunnel effect at cryogenic temperatures |
| 04/28/1981 | US4264817 Coaxial electron capture detector with thermionic emission electron source |
| 04/28/1981 | US4264647 Coating within a ceramic cup using a tapered masking element |
| 04/28/1981 | US4264425 Device for detection of air/fuel ratio from oxygen partial pressure in exhaust gas |
| 04/28/1981 | US4264424 Hydrogen ion sensor having a membrane sheath of an oxygen ion conducting ceramic |
| 04/28/1981 | US4264423 Fluidic thermistor/fugacity device |
| 04/28/1981 | US4264331 For air pollution, included fire combustion |
| 04/28/1981 | US4264328 From signals when it changes equilibrium states |
| 04/28/1981 | US4263920 Method of and device for determining internal body structure |
| 04/28/1981 | CA1100186A2 Needle type non-destructive metal inspection probe |
| 04/28/1981 | CA1099948A1 Quantitative protein analysis by immunodiffusion |
| 04/22/1981 | EP0027385A1 Disposable polarographic gas sensor |
| 04/22/1981 | EP0027368A2 Method, apparatus and instrument for monitoring elongate magnetically permeable members |
| 04/22/1981 | EP0027256A1 Measuring arrangement for polarographic and/or potentiometric analysis |
| 04/21/1981 | US4263576 Humidity sensitive device |
| 04/21/1981 | US4263343 Silver, electrolyte, oxider or silver halide emulsion |
| 04/21/1981 | US4263115 Using ligand-containing membrane |
| 04/21/1981 | US4263104 Electrochemical monitoring |
| 04/21/1981 | US4262425 Self-adjusting inspection apparatus |
| 04/21/1981 | CA1099788A1 Method for the detection of flaws in a tube proximate a contiguous member |
| 04/21/1981 | CA1099786A1 Apparatus and methods for effluent stream analysis |
| 04/21/1981 | CA1099785A1 Determination of hydrogen |
| 04/16/1981 | WO1981001056A1 Measuring arrangement for potentiometric and/or polarographic analysis |
| 04/15/1981 | EP0027005A1 A method of electrochemical sensing and a sensor for oxygen, halothane and nitrous oxide |
| 04/15/1981 | EP0026786A1 Method and apparatus for measuring electrostatic charge density |
| 04/14/1981 | US4262254 Balanced corona electrostatic field sensor |
| 04/14/1981 | US4262253 Constant alternating current conductivity detector for a chromatograph |
| 04/14/1981 | US4262252 Anodic polarization of lead electrode in aqueous sulfuric acid; used to determine state of charge in battery |
| 04/14/1981 | US4262247 Making and using corrosion measuring probes for fluid conveying conduits |
| 04/14/1981 | US4261698 Trace oxygen detector |
| 04/14/1981 | US4261525 Moisture measuring apparatus |
| 04/14/1981 | CA1099204A1 Method and apparatus for measuring the alcohol concentration in exhalation air |
| 04/08/1981 | EP0026701A1 Driving device for a tube control sensor |
| 04/08/1981 | EP0026683A2 Ion mobility detector |
| 04/08/1981 | EP0026666A1 Method of producing sintered zirconia article |
| 04/08/1981 | EP0026591A1 Control of the pH or ion concentration of an electrolyte stream |
| 04/08/1981 | EP0026208A1 Improvements relating to conductance meters of a type especially suitable for estimating the moisture content of organic materials. |
| 04/07/1981 | US4260978 Sintered metal oxide, electrical resistance, particle sizes |
| 04/07/1981 | US4260950 Automatic portable pH meter and method with calibration receptacle |
| 04/07/1981 | US4260884 Corona discharge devices |
| 04/07/1981 | US4260680 Method and apparatus for the measurement of glucose content |
| 04/07/1981 | US4260580 Clinical analyzer |
| 04/07/1981 | US4260467 Polarography |
| 04/07/1981 | CA1098964A1 Method for measuring the concentration of sodium in a flow of mercury-sodium amalgam |
| 04/02/1981 | WO1981000914A1 Detecting particles |
| 04/01/1981 | EP0026116A1 Oxygen sensing apparatus of the resistive type |
| 04/01/1981 | EP0026052A1 Improvements in or relating to gas detecting apparatus |
| 03/31/1981 | US4259640 Process and device for determining a chemical deicer on a road |
| 03/31/1981 | US4259633 Method and apparatus for measuring the moisture content of wood |
| 03/31/1981 | US4259632 Continuous action capacitive moisture measuring apparatus |
| 03/31/1981 | US4259573 Method of determining small concentrations of chemical compounds by plasma chromatography |
| 03/31/1981 | US4259572 Ionization of organic substances on conveyor means in mass spectrometer |
| 03/31/1981 | US4259292 Porous zinc oxide composite coated with catalyst layer |
| 03/31/1981 | US4259264 Adding olefin at rate determined by measured concentration of dissolved chlorine |