Patents
Sitemap › G01 - Measuring; Testing › G01N - Investigating or analysing materials by determining their chemical or physical properties › G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means
Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839)
06/1990
06/19/1990US4935108 Testing electrodeposition quality by quantitative analysis of current distribution
06/19/1990US4935107 Process for electrochemical measurement of the concentration of oxide ions in a bath based on molten halides
06/19/1990US4935106 Ion selective/enzymatic electrode medical analyzer device and method of use
06/19/1990US4935105 Reducing the potential applied to the sensor in contact with the sample to zero, increasing, then decreasing potential; determining the concentration of the analyte
06/19/1990CA1270524A1 Device for measuring stresses in vacuum deposition coatings
06/16/1990CA2002688A1 Interface for coupling liquid chromatography to solid or gas phase detectors
06/14/1990WO1990006520A2 Electrographic process for generating an electrical image signal
06/14/1990WO1990006506A1 Sensor element for boundary flow sensors to determine the lambda value of gas mixtures
06/14/1990WO1990006431A1 Process and device for detecting an error status in a lambda probe
06/13/1990EP0372912A2 Monitoring of pyrometallurgical processes
06/13/1990EP0372911A2 Recoverable enzyme sensor with replacement membrane system
06/13/1990EP0372697A2 Oil leakage sensor
06/13/1990EP0372598A2 Impedance cross correlation logging tool
06/13/1990EP0372429A2 Method and apparatus for measuring respiration, oxidation and similar interactions between a sample and a selected component of a fluid medium
06/13/1990EP0372425A2 Oxygen-sensor element and method for producing the same
06/13/1990EP0372121A1 Device for retaining an electrode holder
06/13/1990EP0372112A1 Method and apparatus for measuring mechanical strain in a ferromagnetic body
06/13/1990EP0248006B1 Device for indicating an unwanted gas
06/13/1990EP0213186B1 Electrochemical sensors and methods for their manufacture and use
06/13/1990EP0170690B1 Non destructive test of materials for ferromagnetic substances
06/13/1990DE3841611A1 Sensorelement fuer grenzstromsensoren zur bestimmung des (lambda)-wertes von gasgemischen Sensor element for cross-current sensors for determination of (lambda) value of gas mixtures
06/13/1990CN2058250U Moisture content measuring apparatus for dry slice
06/13/1990CA2005282A1 Ionization gaz detector
06/12/1990US4933870 Digital silver ion concentration controller for the precipitation of silver halide emulsions
06/12/1990US4933580 Magneto-strictive torque sensor
06/12/1990US4933551 Reversal electron attachment ionizer for detection of trace species
06/12/1990US4933292 Method for controlling and measuring cellulose digestion
06/12/1990US4933070 On support matrix; electrode
06/12/1990US4933066 Apparatus for mounting a diffusion-limiting membrane for a sensor
06/12/1990US4933062 Modified composite electrodes with renewable surface for electrochemical applications and method of making same
06/12/1990US4933048 Metal member on substrate, layer of electrolyte salt
06/12/1990US4932410 Dual membrane mounting for transcutaneous oxygen and carbon dioxide sensor
06/12/1990US4932243 Moisture measurement device
06/12/1990US4932238 Control system and method for controlling plant having high order lag
06/12/1990CA1270342A1 Method of operating an ion trap mass spectrometer
06/12/1990CA1270330A1 Humidity compensation for a photoionization type detector
06/12/1990CA1270303A1 Probe for composite analyzer tester
06/07/1990DE3914579A1 Ultra-thin polyacrylamide and/or agarose electrophoretic gel - on support of consolidated and calendered binder-free polyester mat
06/07/1990DE3840962A1 Ion-sensitive electrode and method for compensating for the temperature dependence in such electrodes
06/07/1990DE3840961A1 Ion-sensitive electrode and method for compensating for the temperature dependence in such electrodes
06/06/1990EP0371774A2 A humidity measurement device by use of an electrochemical cell
06/06/1990EP0371573A2 Capillary electrophoresis apparatus
06/06/1990EP0371517A1 Electrochemical detection system
06/06/1990EP0371490A1 Measuring apparatus of two components using enzyme electrodes and the measuring method thereof
06/06/1990EP0371322A2 Surface testing device
06/06/1990EP0371200A1 Composite, gas-permeable membrane and method of making the same
06/05/1990US4931851 Gas sensitive device
06/05/1990US4931775 Plant watering need monitor
06/05/1990US4931741 Branched sensor system
06/05/1990US4931732 Magnetic flexure system for determining superconductive properties of a sample
06/05/1990US4931731 For detecting flaws in ferrous metal parts
06/05/1990US4931730 Method and apparatus for non-destructive materials testing and magnetostructural materials investigations
06/05/1990US4931328 Capillary tube with reduced protein interactions and controllable electroosmotic flow
06/05/1990US4931214 Oxidic bodies with ionic and electronic conductivity
06/05/1990US4931172 Fluoride ion-selective electrodes based upon superionic conducting ternary compounds and methods of making
06/05/1990US4930893 Electrophoresis imaging system
06/05/1990US4930407 Sensing system for controlling air circulation valves in motor vehicles
06/05/1990US4930364 Glass container inspecting machine
06/05/1990CA2002170A1 Recoverable enzyme sensor with replaceable membrane system
06/05/1990CA1270047A1 Method and apparatus for controlling the concentration of a chemical solution
06/03/1990CA2002584A1 Impedance cross correlation logging tool
06/02/1990CA2004570A1 Apparatus for capillary electrophoresis
05/1990
05/31/1990WO1990005987A1 Capacitive coupled moisture sensor
05/31/1990WO1990005911A1 Method and apparatus for analyzing oxygen
05/31/1990WO1990005910A1 Wholly microfabricated biosensors and process for the manufacture and use thereof
05/31/1990DE3936093A1 Cell concn. for microscopical investigation - by applying slide and retarding motion of cells by magnetic field with absorbent paper concentrating cells by extracting liq.
05/31/1990DE3840021A1 Device for the continuous measurement of a gas concentration
05/30/1990EP0370848A1 Gallium nitride and oxynitrides useful as selective detectors for reducing gases in the atmosphere, process for their preparation and a detecting apparatus containing them
05/30/1990EP0370691A1 Non-destructive examination using eddy current
05/30/1990EP0370607A1 Theophylline assay
05/30/1990EP0370593A2 Soil chemical sensor and precision method for determining the amount of agricultural chemicals
05/30/1990EP0370466A2 Method of examining an inside surface-coated metallic pipe and apparatus for use in such method
05/30/1990EP0370003A1 Sensor construction.
05/30/1990EP0231305B1 Sensors for selective determination of components in liquid or gaseous phase
05/30/1990CN1042608A Measuring method and its instrument for ph value of solution
05/30/1990CN1008216B Va polarographic card
05/30/1990CN1008215B Enzyme electrodes
05/30/1990CN1008214B Ion analyzer calibration cell
05/30/1990CN1008181B Improved ion-sensitive electrode
05/29/1990US4930026 Flaw detector for magnetographic quality inspection
05/29/1990US4929904 Moisture sensing apparatus with movable probe in combination with an agricultural baler having a pickup
05/29/1990US4929898 Transient electromagnetic method for detecting irregularities on conductive containers
05/29/1990US4929885 Apparatus for measuring ground moisture content of soil
05/29/1990US4929832 Methods and apparatus for determining distributions of radioactive materials
05/29/1990US4929331 Oxygen sensor
05/29/1990US4929330 Diffusion-limiting membrane holding means for sensor
05/29/1990US4929329 Electrophoresis cassette system with apparatus and method for filling same
05/29/1990US4929314 Coulometric titrator apparatus and method
05/29/1990US4929313 Electrodes, multilayer
05/29/1990US4928518 Oxygen sensor operability sensing arrangement
05/29/1990US4928513 Sensor
05/29/1990CA1269736A1 Metal detector for detecting product impurities
05/29/1990CA1269712A1 Apparatus for the detection and measurement of suspended particulates in a molten metal
05/29/1990CA1269709A1 Composite analyzer tester
05/29/1990CA1269708A1 Seal means for isolated grounded o.sub.2 sensor
05/29/1990CA1269707A1 Terminal member for o.sub.2 sensor
05/29/1990CA1269706A1 Heated o.sub.2 sensor having isolated ground
05/29/1990CA1269705A1 Photoresponsive detection and discrimination
05/29/1990CA1269547A1 Remote measurement of conditions
05/23/1990EP0369945A2 Process and device for separating electrically charged macromolecular compounds by forced-flow membrane electrophoresis
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