| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 03/13/1990 | US4908112 Capillary sized, closed conduit to be filled with material for electrophoretic or chromatographic separation, the device comprising a semiconductor slab with channel and cover plate |
| 03/13/1990 | US4908105 Electrode of first polarity, plurality of electrodes of second polarity, electrolyte; rate of passage of substance to second electrodes varies, signals being combined to produce flow-insensitive output representative of a substance |
| 03/13/1990 | US4907453 Colloid analyzer |
| 03/13/1990 | US4907442 Method and system for determining fluid saturations within natural or simulated fractures |
| 03/13/1990 | CA1266612A1 Method for assaying a biocomponent based on bound peroxidase |
| 03/08/1990 | WO1990002330A1 Measuring the degree of mixing in a turbulent liquid |
| 03/08/1990 | WO1990002327A1 Improvements in sensitivity and selectivity of ion channel membrane biosensors |
| 03/07/1990 | EP0357255A2 Separation of zone formation from electroosmotic impulse in tubular electrophoretic systems |
| 03/07/1990 | EP0357010A2 Method of identifying spectra |
| 03/07/1990 | EP0356960A2 Stable polyacrylamide gels containing chaotropic agents |
| 03/07/1990 | EP0356682A2 Moisture sensor |
| 03/07/1990 | EP0356434A1 Method of assembly of an o 2? assembly |
| 03/07/1990 | CN1007088B Sensing probe holder system |
| 03/06/1990 | US4906928 Transient electromagnetic apparatus with receiver having digitally controlled gain ranging amplifier for detecting irregularities on conductive containers |
| 03/06/1990 | US4906927 Eddy current flaw detecting apparatus and method thereof |
| 03/06/1990 | US4906925 Apparatus for detecting conductive materials in a moving flow |
| 03/06/1990 | US4906840 Integrated scanning tunneling microscope |
| 03/06/1990 | US4906440 Sensor for detecting chemicals |
| 03/06/1990 | US4906349 Process for the manufacture of a measuring probe for a measuring head to detect the oxygen activity of metal melts and a measuring probe manufactured by such a process |
| 03/06/1990 | US4906348 Flow-through cell provided with reference electrode |
| 03/06/1990 | US4906344 Thermal technique for bulk fluid movement in capillary electrophoresis |
| 03/06/1990 | US4906339 Amperometric method |
| 03/06/1990 | US4905655 Fuel injector assembly with an alcohol sensor |
| 03/06/1990 | US4905652 Device for measuring a component of a gaseous mixture |
| 03/06/1990 | US4905649 Fuel properties detecting apparatus for an internal combustion engine |
| 03/06/1990 | US4905497 Gas mixing device and gas analyzer making use of the same |
| 03/06/1990 | US4905469 Air-fuel ratio feedback system having improved activation determination for air-fuel ratio sensor |
| 03/06/1990 | CA1266510A1 Device for continuously measuring the linear density of a textile product |
| 02/28/1990 | EP0356342A2 Digital silver ion concentration controller for the precipitation of silver halide emulsions |
| 02/28/1990 | EP0356187A2 Electrophoresis using contour-clamped electric fields |
| 02/28/1990 | EP0356160A2 Capillary device |
| 02/28/1990 | EP0356017A2 Liquid leakage detection apparatus |
| 02/28/1990 | EP0356008A2 High temperature flame jet for gas chromatography |
| 02/28/1990 | EP0355896A2 Method, apparatus and solution for calibration of partial pressure value |
| 02/28/1990 | EP0355847A2 Method of forming planar membrane |
| 02/28/1990 | EP0355241A1 Spin-polarized scanning tunneling microscope |
| 02/28/1990 | CN1040096A Process for determination of carbonization potential in gas carbonization furnaces and a device for this process |
| 02/28/1990 | CN1040094A Method for determining biaxial stresses in ferromagnetic materials |
| 02/28/1990 | CN1040093A Apparatus for measuring solid material flow in fluent gas-solid composite material and method of same |
| 02/28/1990 | CN1007016B Detection device of thickness of the dried cocoon layer and moisture content in a fresh silk worm cocoon |
| 02/27/1990 | US4904944 Flow measuring apparatus with analog, essentially linear output |
| 02/27/1990 | US4904929 Method for detection of weak links in the current path of electrically continuous superconductors |
| 02/27/1990 | US4904366 Instrument for determination of the base sequence of nucleic acid |
| 02/27/1990 | US4903528 System and process for detecting properties of travelling sheets in the cross direction |
| 02/27/1990 | US4903481 Device for protecting a lambda probe |
| 02/27/1990 | CA1266299A1 Technique for the measurement of high purity water |
| 02/22/1990 | WO1990001696A1 Process and device for determining oxidable substances contained in the water of an aqueous sample liquid |
| 02/22/1990 | WO1990001694A1 Chemically sensitive transducer |
| 02/22/1990 | WO1990001687A1 Sensors for detecting and locating liquid leaks |
| 02/22/1990 | DE3836426C1 Electrode |
| 02/21/1990 | EP0354984A2 Capillary tube with reduced protein interactions and controllable electroosmotic flow |
| 02/21/1990 | CN2053340U Portable digital acidimeter |
| 02/21/1990 | CN2053339U Automatic alarm for baby urinating |
| 02/21/1990 | CN1039925A Heavy colour hollow globular shape magnet powder and making method |
| 02/21/1990 | CN1039924A Light colour hollow globular shape magnet powder and making method |
| 02/21/1990 | CN1039897A Vigour analysis instrument flushing liquor |
| 02/20/1990 | US4903099 Field effect transistor for use as ion sensor |
| 02/20/1990 | US4902892 Method of measurement by scanning tunneling microscope |
| 02/20/1990 | US4902571 Moisture sensitive resistive element |
| 02/20/1990 | US4902402 Chloride containing solid electrolyte gas sensing apparatus |
| 02/20/1990 | US4902401 Dual gas sensor having solid electrolyte contained in an oxide matrix |
| 02/20/1990 | US4902400 Gas sensing element |
| 02/20/1990 | US4902399 Flow-through electrochemical sensor |
| 02/20/1990 | US4902308 Composite membrane |
| 02/20/1990 | US4902138 Measuring component concentration in a gas blend |
| 02/20/1990 | US4902099 Trace element spectrometry with plasma source |
| 02/20/1990 | US4901862 Inspection apparatus for flanged or curled open end parts of cans |
| 02/20/1990 | US4901578 Probe carrier drive assembly |
| 02/20/1990 | US4901446 Apparatus for finely actuating a glass electrode or the like |
| 02/15/1990 | DE3834189C1 Non-electrochemical production of chemically selective layers in suspended-gate field-effect transistors |
| 02/15/1990 | DE3827578A1 Verfahren und vorrichtung zur bestimmung oxidierbarer wasserinhaltsstoffe einer waessrigen probenfluessigkeit Method and device for determination of oxidizable substances water content of an aqueous probenfluessigkeit |
| 02/15/1990 | DE3827577A1 Electrochemical method for determining oxidisable water constituents of an aqueous test liquid by means of anodic oxidation |
| 02/15/1990 | DE3827426A1 Device for carrying out a method for the purpose of identifying and quantifying unknown gaseous substances |
| 02/14/1990 | EP0354733A2 Conductive resin structure for connecting metal conductors |
| 02/14/1990 | EP0354673A2 A solvent detecting sensor |
| 02/14/1990 | EP0354604A2 System for measuring the partial pressure of carbon dioxide in liquid samples, particularly in biological samples |
| 02/14/1990 | EP0354550A2 Method and apparatus for the non-destructive testing of semi-products or of components |
| 02/14/1990 | EP0354486A2 Apparatus for carrying out a method to identify and to quantify unknown gaseous substances |
| 02/14/1990 | CN2052902U Gas-sensing contact burning senser |
| 02/14/1990 | CN2052901U Detector for methane catalyst element |
| 02/13/1990 | US4901017 Gap-modified magnetic bridge device for fringing flux analysis |
| 02/13/1990 | US4900818 Large scale synthesis of twelve member diazamonocyclic compounds |
| 02/13/1990 | US4900817 Multiring phthalocyanine compounds |
| 02/13/1990 | US4900425 Oxygen sensor |
| 02/13/1990 | US4900424 Electrochemical measurement cell |
| 02/13/1990 | US4900423 Enzyme sensor using immobilized glucokinase |
| 02/13/1990 | US4900422 System for monitoring and reporting the operability and calibration status of a dissolved oxygen sensor |
| 02/13/1990 | US4900421 Vortex stabilized electrophoretic separation apparatus |
| 02/13/1990 | US4900416 Applying pulsed electric fields in two directions to nucleic acid fragment samples in a crosslinked poly(meth)acrylamide gel |
| 02/13/1990 | US4900414 Commercial separation system and method using electrokinetic techniques |
| 02/13/1990 | US4900412 Heated solid electrolyte oxygen sensor having unique heater element |
| 02/13/1990 | US4900405 Surface type microelectronic gas and vapor sensor |
| 02/13/1990 | US4900404 Phosphate selective membrane electrode |
| 02/13/1990 | US4899759 Flow-through resistivity cell |
| 02/13/1990 | CA1265730A1 Staining method for proteins and nucleic acids |
| 02/13/1990 | CA1265710A1 Control of electroless plating baths |
| 02/08/1990 | WO1990001162A1 Electrochemical measurement probe |
| 02/08/1990 | WO1990001161A1 Glass electrode for measuring ion activity in a solution |
| 02/08/1990 | WO1990001160A1 Calibration device for use in calibrating a sensor |
| 02/08/1990 | WO1990001159A1 Method, test probe and apparatus for the measurement of alternating current potential drop |