| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 07/28/1981 | US4280889 Solid state ion responsive and reference electrodes |
| 07/28/1981 | US4280815 Electrochemiluminescent immunoassay and apparatus therefor |
| 07/28/1981 | US4280505 Fixation ring for transcutaneous gas sensor probe |
| 07/28/1981 | CA1106027A1 Apparatus and method for detecting the presence of a substance on a liquid surface |
| 07/23/1981 | WO1981002065A1 Method and device for sampling and determining the content of magnetite and phosphore in minerals |
| 07/22/1981 | EP0032209A2 Electric arc-discharge probe for the proportional measurement of the concentration of oxygen in a composite gas, in particular in gases issuing from a chemical air-fuel combustion |
| 07/21/1981 | US4280115 Humidity sensor |
| 07/21/1981 | US4280094 Test plate method and an arrangement for testing the serviceability and for setting and calibrating a test apparatus for the non-destructive electrical or magnetic testing of metallic blanks |
| 07/21/1981 | US4280052 Multiple chamber ionization detector |
| 07/21/1981 | US4279974 Solid electrolytic material and use thereof |
| 07/21/1981 | US4279775 Blood gas control |
| 07/21/1981 | US4279728 Electrode |
| 07/21/1981 | US4279727 Device for measuring the emission of gaseous inorganic fluorine or chlorine compounds |
| 07/21/1981 | US4279724 Preparative electrofocusing in flat bed granulated polysaccharide gels |
| 07/21/1981 | US4279666 Exhaust gases |
| 07/21/1981 | US4279142 Technique for in situ calibration of a gas detector |
| 07/14/1981 | US4278935 Electrodes for moisture meter |
| 07/14/1981 | US4278934 Electrode assembly for a moisture meter |
| 07/14/1981 | US4278636 Calibrating device for a breath alcohol measuring instrument |
| 07/14/1981 | US4278519 Electrode assembly for determining the identification of metals and metal alloys |
| 07/14/1981 | US4278509 Method of activating oxygen concentration cell |
| 07/14/1981 | US4278441 Flame sampling apparatus and method |
| 07/14/1981 | CA1105085A1 Partial pressure of oxygen sensor |
| 07/14/1981 | CA1105084A1 Method and apparatus for amperemetric measurement of free chlorine in a solution |
| 07/09/1981 | WO1981001882A1 Oxygen gas analyzer |
| 07/09/1981 | WO1981001880A1 Atmosphere sensing element |
| 07/08/1981 | EP0031786A2 Synthetic-liquid control standard for verifying the quality of instruments for the analysis of gas in blood |
| 07/08/1981 | EP0031565A2 Method and apparatus of segregating at least one species of desired ions |
| 07/08/1981 | EP0031357A1 Transcutaneous oxygen and local perfusion measurement |
| 07/07/1981 | US4277742 Absolute humidity sensors and methods of manufacturing humidity sensors |
| 07/07/1981 | US4277439 Gas component detector |
| 07/07/1981 | US4277323 Electrochemical oxygen sensor, particularly for use in the exhaust system of automotive-type internal combustion engines |
| 07/07/1981 | US4277322 Compressible, porous ceramic boot over metal electrode |
| 07/07/1981 | US4276854 Apparatus for detecting toner density |
| 07/07/1981 | CA1104654A1 Resistor-type solid electrolyte oxygen sensor |
| 07/07/1981 | CA1104652A1 Solid state filter for gas sensors |
| 07/01/1981 | EP0031156A1 Cooking oven with a ceramic humidity sensor |
| 07/01/1981 | EP0031149A1 Method of calibrating a measuring arrangement for the determination of the partial pressure of oxygen in blood |
| 07/01/1981 | EP0030965A1 Fixation ring for transcutaneous gas sensor probe |
| 07/01/1981 | EP0030962A1 Pulsed voltammetric detection of microorganisms |
| 06/30/1981 | US4276547 Film thickness detection system |
| 06/30/1981 | US4276537 Moisture-responsive resistor element |
| 06/30/1981 | US4276381 Preparation of immobilized enzymes of microorganisms |
| 06/30/1981 | US4276202 Process for the manufacture of electrodes having perovskite structure for electrochemical high temperature cells |
| 06/30/1981 | US4276161 Fuel filter provided with a water level detecting means |
| 06/30/1981 | US4276144 Oxygen electrode and method for preparation thereof |
| 06/30/1981 | US4276143 Apparatus for continuously measuring ion concentrations |
| 06/30/1981 | US4276142 Electrochemical sensor, particularly for internal combustion engine exhaust gas composition determination, and method of its manufacture |
| 06/30/1981 | US4276141 For analysis of concentration of ions in blood |
| 06/30/1981 | US4276139 Process for magnetic separation and collection of viable female and male spermatozoa |
| 06/30/1981 | US4276128 Anodizing, valve metals |
| 06/30/1981 | US4275774 Method and an apparatus for transferring a reference liquid from an ampoule to an electrochemical measuring instrument |
| 06/30/1981 | US4275743 Measuring device for measuring the bioelectrical activity of the central nervous system |
| 06/30/1981 | CA1104244A1 Apparatus for testing elongate articles |
| 06/30/1981 | CA1104209A1 Method for checking thermocatalytic sensors of mine safety systems |
| 06/24/1981 | EP0030889A1 Method and device for the non destructive testing of spot welds |
| 06/24/1981 | EP0030621A1 Ionisation smoke signaller with particular operational reliability |
| 06/23/1981 | US4275352 Sea water conductivity cell |
| 06/23/1981 | US4275196 Glyoxal agarose |
| 06/23/1981 | US4274937 Across double layer formed of solid and ionic fluid |
| 06/23/1981 | CA1103758A1 Static drop mercury electrode |
| 06/17/1981 | EP0030503A1 Buffer overcoat for CO2 ion-selective electrodes |
| 06/17/1981 | EP0030484A1 Probe carrying apparatus for inspecting the tubes of a steam generator |
| 06/16/1981 | US4274054 Dual channel apparatus for detecting surface defects in elongate metallic members with liftoff compensation |
| 06/16/1981 | US4273639 Capillary bridge in apparatus for determining ionic activity |
| 06/16/1981 | US4273638 Disposable electrolyte housing |
| 06/16/1981 | US4273637 Pressure balanced external reference electrode assembly and method |
| 06/16/1981 | US4273636 Selective chemical sensitive field effect transistor transducers |
| 06/16/1981 | US4272986 Method and means for measuring moisture content of hermetic semiconductor devices |
| 06/16/1981 | CA1103329A1 Sensor for determining level of a flowing liquid in a vessel |
| 06/16/1981 | CA1103327A1 Film thickness detection system |
| 06/16/1981 | CA1103052A1 Thermistor device for identifying an unknown fluid |
| 06/11/1981 | WO1981001572A1 Compositions including mercaptoorganopolysiloxanes and metal salts of carboxylic acids |
| 06/11/1981 | WO1981001531A1 Device for determining the hardening duration of casting cores and moulds |
| 06/10/1981 | EP0030195A1 Method of measuring the concentration of an oxidisable or reducible substrate in solution by means of an oxido-reductase enzyme, and device for carrying out such a method |
| 06/10/1981 | EP0030164A2 An oxygen concentration detector and a method of detecting oxygen concentration |
| 06/10/1981 | EP0030112A1 Combustible gas detectors |
| 06/09/1981 | US4272781 Nondestructive examining apparatus |
| 06/09/1981 | US4272718 Moisture meter |
| 06/09/1981 | US4272415 Compositions including mercaptoorganopolysiloxanes and metal salts of carboxylic acids |
| 06/09/1981 | US4272350 Electrochemical sensor for measuring concentrations of species in a fluid mixture, of the type comprising a partial-pressure internal reference electrode |
| 06/09/1981 | US4272349 Catalyst supported oxygen sensor with sensor element having catalyst and protective layers and a method of manufacturing same |
| 06/09/1981 | US4272331 Oscillatory mode oxygen sensor and method |
| 06/09/1981 | US4272330 Transient mode oxygen sensor and method |
| 06/09/1981 | US4272329 Steady state mode oxygen sensor and method |
| 06/09/1981 | US4272328 Multilayer, metals, metal halides |
| 06/09/1981 | US4272247 Continuous-flow free acid monitoring method and system |
| 06/09/1981 | US4272245 Analyzing, testing, potentials |
| 06/09/1981 | CA1102877A1 Oxygen monitoring circuit |
| 06/09/1981 | CA1102874A1 Method for checking gas analysis devices |
| 06/03/1981 | EP0029710A1 Toner concentration detecting apparatus |
| 06/02/1981 | US4271474 Apparatus for detecting and measuring the hydrogen content in a liquid substance |
| 06/02/1981 | US4271393 Apparatus and method for eddy current detection of subsurface discontinuities in conductive bodies |
| 06/02/1981 | US4271357 Trace vapor detection |
| 06/02/1981 | US4271209 Method and apparatus for coating the grooved bottoms of substrates |
| 06/02/1981 | US4271119 Diverting means |
| 06/02/1981 | US4271002 Calcium ion-selective electrodes and membrane for use therein |
| 06/02/1981 | US4271001 Apparatus for measuring membrane characteristics of vesicles |
| 06/02/1981 | US4271000 Electrochemical sensor for measuring relative concentrations of reactive species in a fluid mixture |
| 06/02/1981 | US4270691 Method of joining ceramic members and its application to oxygen sensor element manufacture |