| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 03/07/1989 | US4810878 Ion source for mass spectrometer |
| 03/07/1989 | US4810877 Mass spectrometer with means to correct for threshold carbon dioxide |
| 03/07/1989 | US4810658 Discrimination of parts that are liquid and bound to solid |
| 03/07/1989 | US4810650 Determination of biomass |
| 03/07/1989 | US4810597 Fuel cell comprising a device for detecting the concentration of methanol |
| 03/07/1989 | US4810529 Method of producing a miniature internal reference gas chamber within an automotive, internal reference, solid electrolyte, lean oxygen sensor |
| 03/07/1989 | US4810456 Polymerization, compression, density maintenance |
| 03/07/1989 | US4810390 Separation and purification of pigment suspensions and suspensions of pigment intermediates by a membrane separation process |
| 03/07/1989 | US4810352 Electrochemical sensors |
| 03/07/1989 | US4810351 Carbonate selective membrane and electrode |
| 03/07/1989 | US4810350 Electrolytic cells, yttria-stabilized zirconia solid electrolyte, platinum electrode |
| 03/07/1989 | US4810349 Oxygen concentration sensor with an improved electrical connection for the transmission of different operating voltages |
| 03/07/1989 | US4810348 Automatic electrophoresis apparatus and method |
| 03/07/1989 | US4810341 Method of making electrophoresis sheet |
| 03/07/1989 | US4810331 Surfactant sensing electrode for potentiometric titrations |
| 03/07/1989 | US4810183 Apparatus for casting thin layer gel media in a mould and subsequently using gel for electrophoretic separation without removing it from the mould |
| 03/07/1989 | US4809838 Coin detection means including a current ramp generator |
| 03/07/1989 | CA1250742A1 Material of oxygen ion conductor |
| 03/02/1989 | DE3823433A1 Method for the determination of a measured variable |
| 03/02/1989 | DE3817024A1 Method for monitoring wire stapling in book binding machines |
| 03/02/1989 | DE3728050A1 Measuring apparatus containing a fluoride membrane electrode, and use thereof |
| 03/01/1989 | EP0304947A2 Biosensor |
| 03/01/1989 | EP0304933A2 A reference electrode and a measuring apparatus using the same |
| 03/01/1989 | CN2033513U Multi-function mini-detector of magnet force |
| 03/01/1989 | CN2033512U Low out-put impedance ion selecting electrod |
| 03/01/1989 | CN2033511U Pocket-size earth-chemical detector |
| 03/01/1989 | CN1031425A Apparatus and methods for sensing fluid components |
| 03/01/1989 | CN1031424A Method for estimating yield of wheat |
| 03/01/1989 | CN1003471B Setting method and apparatus for deep energy level transient spectrometer with high resolving power |
| 02/28/1989 | US4808931 Conductivity probe |
| 02/28/1989 | US4808930 Technique of compensating for capacitive effects in conductivity measurements |
| 02/28/1989 | US4808927 Circumferentially compensating eddy current probe with alternately polarized receiver coil |
| 02/28/1989 | US4808926 Eddy current apparatus and method for controlling a rod mill on the basis of faults detected per unit time |
| 02/28/1989 | US4808925 Three magnet casing collar locator |
| 02/28/1989 | US4808924 Circumferentially compensating eddy current probe with alternately polarized transmit coils and receiver coils |
| 02/28/1989 | US4808922 Magnetic field producing device for determining the concentration of a paramagnetic substance passed through a rotating cell chamber |
| 02/28/1989 | US4808921 Paramagnetic gas analyzer using DC and AC magnetic fields |
| 02/28/1989 | US4808819 Mass spectrometric apparatus |
| 02/28/1989 | US4808538 Method and device for measuring the corrosivity of liquids |
| 02/28/1989 | US4808294 Probe for measuring the partial pressure of oxygen in a gaseous atmosphere in relation to a reference atmosphere |
| 02/28/1989 | US4808293 Ion conductive solid electrolyte plate |
| 02/28/1989 | US4808292 Partially covered with lipophilic membrane |
| 02/28/1989 | US4808288 Electrophoretic gel for separating hemoglobin variants |
| 02/28/1989 | US4808276 Method for checking in a moving mode the continuity of a metal covering on a metal wire of different nature |
| 02/28/1989 | US4808269 Method for controlling an oxygen concentration sensing device |
| 02/28/1989 | US4807484 Apparatus for the measurement and non-destructive material testing of laid pipelines |
| 02/28/1989 | US4807466 Method and apparatus for determining the charging of charcoal filters |
| 02/28/1989 | US4807463 Oxygen measuring cell |
| 02/28/1989 | CA1250635A1 Apparatus for detecting metal debris particles |
| 02/28/1989 | CA1250618A1 Method and apparatus for electrochemical analysis of solutions |
| 02/23/1989 | WO1989001623A1 Process and device for lambda-value determination and use of same |
| 02/23/1989 | WO1989001620A1 Optoelectric electrophoresis analysis systems |
| 02/23/1989 | WO1989001613A1 Non-destructive determination of stress characteristics in magnetic materials |
| 02/23/1989 | WO1989001603A1 Scanning type tunnel microscope |
| 02/23/1989 | DE3823065A1 Oxygen sensor |
| 02/23/1989 | DE3817504A1 Square-wave generator |
| 02/23/1989 | DE3727123A1 Method and circuit arrangement for the recognition of the operational readiness of an oxygen measuring probe |
| 02/22/1989 | EP0304295A1 Electrokinetic analysis method and apparatus employing heat removal |
| 02/22/1989 | EP0304195A2 Electrophoresis apparatus |
| 02/22/1989 | EP0303979A2 Apparatus for measuring physical and/or chemical variables of liquids or gases |
| 02/22/1989 | EP0303832A1 Method and apparatus for reducing the concentration of oxides of nitrogen |
| 02/22/1989 | CN2033122U Electromagnetic nondestructive flaw detection feeler unit |
| 02/22/1989 | CN2033121U Ammonia, co2 air-gap gas sensitized microelectrode |
| 02/22/1989 | CN1031280A Sensor for measuring activity of ions, their method for prodn. and subordinate arrangement |
| 02/21/1989 | US4806912 Monitoring system for a liquid purification system |
| 02/21/1989 | US4806863 Eddy current apparatus including cylindrical coil with flux concentrator for high resolution detection of flaws in conductive objects |
| 02/21/1989 | US4806862 Method of magnetographic inspection of quality of materials |
| 02/21/1989 | US4806850 Method and apparatus for analyzing the corrosive effect of the soil and its environment on a buried metallic structure and their application to the locating of said effect |
| 02/21/1989 | US4806849 Method and apparatus for diagnosing degradation of coating film on metal material |
| 02/21/1989 | US4806765 Method and apparatus for checking the signal path of a measuring system |
| 02/21/1989 | US4806486 Calibration liquid for ion-specific electrodes, process for preparing them and their application |
| 02/21/1989 | US4806434 Medium for electrophoresis |
| 02/21/1989 | US4806314 Measurement of low hydrocarbon concentration; air pollution control |
| 02/21/1989 | US4806212 Thermoplastic resin mixture of carbon black, graphite, metal oxide or polymer; masonry drying |
| 02/21/1989 | US4805624 Low-potential electrochemical redox sensors |
| 02/21/1989 | CA1250375A1 Improved mass spectrometer |
| 02/21/1989 | CA1250153A1 Apparatus for the quantitative and qualitative characterization of hydrocarbon containing particles in a gas |
| 02/16/1989 | DE3804054C1 Monitoring device for calibrating dry or fluid testing agent containing magnetic powder |
| 02/16/1989 | DE3726479A1 Process for producing electrically insulating regions or layers in or on O<2-> ion-conducting solid electrolyte substrates and also composition for carrying out the process |
| 02/15/1989 | EP0303356A2 Scanning combination thickness and moisture gauge for moving sheet material |
| 02/15/1989 | EP0303222A2 Measuring probe for measuring the conductivity of fluids inductively |
| 02/15/1989 | EP0303116A2 Sensor used for electrical heating measurement |
| 02/15/1989 | CN2032718U Ion smoke-sensitive fire detector |
| 02/15/1989 | CN2032717U Capacitor type water-containing dielectric monitor |
| 02/15/1989 | CN1031134A Polarographic determination of tetravalent and hexavalent selenium by using new polarography |
| 02/15/1989 | CN1031098A Coating for tubular zirconium-oxide electrode |
| 02/14/1989 | US4805070 Capacitive coupled moisture sensor |
| 02/14/1989 | US4804936 Liquid selective automatic bilge pump control |
| 02/14/1989 | US4804914 Method for determining force characteristic of a device for magnetically holding workpieces |
| 02/14/1989 | US4804846 Photoionization detector for gas chromatography |
| 02/14/1989 | US4804839 Heating system for GC/MS instruments |
| 02/14/1989 | US4804838 Inductively-coupled radio frequency plasma mass spectrometer |
| 02/14/1989 | US4804632 Method for detecting combustible gases and device therefor |
| 02/14/1989 | US4804469 Flexible jacket membrane processing apparatus |
| 02/14/1989 | US4804455 Electrochemical testing system |
| 02/14/1989 | US4804454 Oxygen concentration sensing apparatus |
| 02/14/1989 | US4804443 Method and apparatus for the determination of electrochemically active components in a process stream |
| 02/14/1989 | US4803869 Flow-through analytical measurement apparatus and method |
| 02/14/1989 | US4803866 Air-fuel ratio detecting device |
| 02/14/1989 | CA1250021A1 Process and device for the detection of surface flaws by means of an eddy current |