| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 03/31/1981 | US4259165 Galvanic cell, gas-permeable membrane, measuring electrode, counterelectrode |
| 03/31/1981 | US4259164 Silver/silver halide electrodes comprising chromium or nickel |
| 03/31/1981 | US4258736 Electrostatic monitoring system |
| 03/31/1981 | US4258563 Gas sensor |
| 03/31/1981 | CA1098586A1 Probe for an electrochemical, oxygen measurement pickup |
| 03/25/1981 | EP0025752A1 Device for inserting a sensor in the exhaust conduits of an internal-combustion engine, and a control system for metering the fuel mixture using such a device |
| 03/25/1981 | EP0025625A1 Gas analysis apparatus |
| 03/24/1981 | US4258319 Surface defect detecting apparatus for use with rotating circularly shaped metallic material |
| 03/24/1981 | US4258318 Flaw detector for pipe employing magnets located outside the pipe and detector mounted inside and movable along the pipe with the magnets |
| 03/24/1981 | US4258002 Catalytic conductor that increases temperature in presence of gas |
| 03/24/1981 | US4257868 Automatic serum applicator with serum drying-preventive mechanism |
| 03/24/1981 | US4257863 Gas sensors and method of making such sensors |
| 03/24/1981 | US4257348 Device measuring the concentration of toner in a developer mixture |
| 03/24/1981 | CA1098192A1 Compensation for inherent fluctuation in output level of exhaust sensor in air-fuel ratio control system for internal combustion engine |
| 03/24/1981 | CA1098172A1 Needle type non-destructive metal inspection probe |
| 03/18/1981 | EP0025293A1 Alkali metal ionization detector with in-situ calibration capability |
| 03/18/1981 | EP0025110A2 Electrochemical measuring apparatus provided with an enzyme electrode |
| 03/17/1981 | US4256963 Mass spectrometer |
| 03/17/1981 | US4256561 Electrochemical measuring electrode |
| 03/17/1981 | US4256543 Electrochemical detection of phosgene in gas mixtures |
| 03/17/1981 | US4256152 Apparatus for preparing ampullas |
| 03/17/1981 | US4255960 Apparatus for measuring and/or monitoring a constituent of an atmosphere |
| 03/11/1981 | EP0024991A1 Device for detecting flaws in a metallic plate by means of eddy currents, and method using this device |
| 03/11/1981 | EP0024938A1 Method of producing exhaust gas sensors |
| 03/11/1981 | EP0024891A1 Process for liberating metal ions from a water soluble glass at a controlled rate |
| 03/11/1981 | EP0024753A1 Making and using corrosion measuring probes for fluid conveying conduits |
| 03/11/1981 | EP0024679A1 Selective gas sensor with great sensitivity and stability for determining and measuring the degree of air pollution on the basis of metal oxide semiconductors |
| 03/10/1981 | US4255703 Apparatus for testing the size and the spacings of silicon crystals in Al-Si alloys |
| 03/10/1981 | US4255244 Shrink tube liquid junction structure for electrochemical electrodes |
| 03/10/1981 | US4254857 Detection device |
| 03/10/1981 | US4254654 Modulated fluid detector |
| 03/04/1981 | EP0024327A1 Respirometer for measuring the respiratory flow rate and direction |
| 03/03/1981 | US4254377 Method for sensing electrical potentials |
| 03/03/1981 | US4253934 Aging treatment for exhaust gas oxygen sensor |
| 03/03/1981 | US4253931 Sputtering platinum in an atmosphere of nitrogen, oxygen or an inert gas |
| 03/03/1981 | US4253847 Preparing sample for electrochemical testing system |
| 03/03/1981 | US4253302 Exhaust gas purifying device for internal combustion engine |
| 03/03/1981 | US4253272 Moisture sensing apparatus and method for an agricultural chemical applicator |
| 03/03/1981 | CA1096941A1 Magnetic inspection method and apparatus |
| 03/03/1981 | CA1096940A1 High temperature reference electrode |
| 03/03/1981 | CA1096757A1 Clinical procedure for measuring lipoprotein cholesterols |
| 03/03/1981 | CA1096654A1 Automatic electrophoresis apparatus |
| 02/25/1981 | EP0024192A1 Silver/silver halide electrodes and process for preparing same |
| 02/25/1981 | EP0024191A2 Reference elements, ion-selective electrodes containing said elements and method of preparing said elements |
| 02/25/1981 | EP0024083A1 Method and apparatus for testing metal tapes. |
| 02/24/1981 | US4252627 Electrolytic cells, permeability, membranes |
| 02/24/1981 | US4252617 Method and apparatus for spectrophotometry |
| 02/24/1981 | US4252124 Single-rod pH measuring circuit |
| 02/24/1981 | CA1096518A1 Magnetic techniques for separating non-magnetic materials |
| 02/24/1981 | CA1096441A1 Electrochemical cell having enhanced-surface non- conducting solid electrolyte and method of making same |
| 02/24/1981 | CA1096197A1 Apparatus for measuring excess oxygen or combustibles in a gaseous sample of a combustion process |
| 02/18/1981 | EP0023944A2 Method to detect moisture in information cables insulated with synthetic matter |
| 02/17/1981 | US4251809 Method and apparatus for detecting the presence of water in oil |
| 02/17/1981 | US4251775 Ion flux density probe |
| 02/17/1981 | US4251470 Process for preparing di[p-(1,1,3,3-tetramethylbutyl)phenyl] phosphoric acid ester |
| 02/17/1981 | US4251360 Method and apparatus for the detection of a specific binding protein |
| 02/17/1981 | US4251342 Solid electrolyte oxygen sensor with integral heater |
| 02/17/1981 | US4251225 Using a stannic oxide, antimony trioxide, and platinum oxide compound |
| 02/17/1981 | US4251220 For continuous detection of low levels of chloride, sulfate, phosphate and nitrate using conductivity cells |
| 02/17/1981 | US4251219 Apparatus for and method of determining contaminants on low pressure condensate |
| 02/17/1981 | US4251218 Using low molecular weight base or acid and an ion impermeable membrane |
| 02/17/1981 | US4250738 Method and apparatus for measuring characteristics of small quantities of liquid dropped onto a thermostatically heated transducer, utilizing a warm-up and measurement program |
| 02/17/1981 | US4250737 Battery powered gas level indicator |
| 02/17/1981 | CA1095990A1 Combustibles analyzer |
| 02/17/1981 | CA1095989A1 Solid electrolyte sensor for monitoring combustibles in an oxygen containing environment |
| 02/11/1981 | EP0023631A1 Means and method for determining the ionic strength or specific gravity of an aqueous test sample |
| 02/10/1981 | US4250010 Integrated ion selection electrode device |
| 02/10/1981 | US4250008 Purification of Factor VIII |
| 02/10/1981 | CA1095638A1 Smoke detector |
| 02/10/1981 | CA1095591A1 Debitmetre , anenometre a grille transparente |
| 02/10/1981 | CA1095589A1 Capacitor cell for moisture testing |
| 02/10/1981 | CA1095285A1 Continuously reading analyzer |
| 02/05/1981 | WO1981000304A1 A method and apparatus for indicating the presence of substances which,in a chemical reaction,generate or consume gas |
| 02/05/1981 | WO1981000302A1 Liquid transport device |
| 02/04/1981 | EP0023456A1 Method and apparatus using eddy currents for nondestructive testing for the detection of carburised zones |
| 02/04/1981 | EP0023439A1 Electrochemical gas sensor |
| 02/04/1981 | EP0023438A1 Improved resistance type oxygen sensor |
| 02/04/1981 | EP0023216A1 An oxygen-sensitive element and a method of detecting oxygen concentration. |
| 02/03/1981 | US4249156 Uncompensated low temperature stoichiometric air/fuel ratio exhaust gas sensor |
| 02/03/1981 | US4249131 Method and apparatus for measuring electrostatic charge density |
| 02/03/1981 | US4248712 Electrode device |
| 02/03/1981 | US4248239 Medical sensor assembly with battery |
| 02/03/1981 | CA1095142A1 Continuous testing apparatus for determining the magne tic characteristics of a strip of moving material incl uding a method of obtaining a profile indicative of th e quality of the coil throughout the entire length, an d flux inducing and pick-up device therefor |
| 02/03/1981 | CA1095124A1 Pneumatic drive device for a probe particularly an eddy current measuring probe |
| 02/03/1981 | CA1094980A1 Electrophoresis apparatus with automatic multiple- sample applicator |
| 01/28/1981 | EP0023163A1 Flexible probe for nondestructive testing of very long pipes |
| 01/28/1981 | EP0023157A1 Liquid transport device |
| 01/28/1981 | EP0023156A1 Liquid transport device for controlled liquid flow, and liquid testing device and device for determining activity of an ionic analyte including a liquid transport device |
| 01/27/1981 | US4247848 Fire detector with a monitor circuit |
| 01/27/1981 | US4247819 Apparatus for surface flaw detection on electrically conductive cylindrical material |
| 01/27/1981 | US4247818 Automatic sensitivity adjustment apparatus for calibration of a non-destructive inspection instrument |
| 01/27/1981 | US4247380 Technique for in situ calibration of a gas detector |
| 01/27/1981 | US4247306 High frequency heating, infrared photography |
| 01/27/1981 | US4247299 Electrical resistance, air pollution |
| 01/27/1981 | CA1094347A1 Method and apparatus for conveying a gas sample through an analyzer chamber |
| 01/21/1981 | EP0022625A1 Short path liquid junction structure for electrochemical electrodes |
| 01/21/1981 | EP0022503A1 Device for indicating the specific loading of metals of ion exchangers |
| 01/21/1981 | EP0022444A1 Improvements in and relating to the detection of particles in a gaseous medium |
| 01/20/1981 | US4246228 Combustible gas detectors |
| 01/20/1981 | US4246222 Electrophoresis, plates, capillary pressure, deaeration, surface tension, gelation |