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)
10/1991
10/23/1991EP0452930A2 Apparatus for sample ionization and mass spectrometry
10/23/1991EP0452826A2 System and method for continuous separation of isotopes
10/23/1991EP0452690A2 Electrophoresis gel plate assemblies
10/23/1991EP0452443A1 Rotary head for scanning metal to be tested.
10/23/1991CN1055601A Chemcial sensor
10/23/1991CN1014463B Combined gel electrophoresis spool with verticle plates
10/23/1991CN1014462B High temp. ultralow oxygen rapid measuring probe
10/23/1991CN1014461B Measuring method and its instrument for ph value of solution
10/23/1991CN1014460B Air-fuel ratio sensor used to control an internal combustion engine
10/23/1991CN1014459B Thin transparent gold-gauze electrode and its prepn.
10/23/1991CN1014458B Thermo-catalyzing component with low current or low power loss and manufacturing method
10/23/1991CN1014457B Imflammable detector
10/22/1991US5060248 Scanning analysis and imaging system with modulated electro-magnetic energy source
10/22/1991US5059909 Determination of particle size and electrical charge
10/22/1991US5059908 Amperimetric measurement with cell electrode deplating
10/22/1991US5059905 Indication of cutting tool wear by monitoring eddy currents induced in a metallic workpiece
10/22/1991US5059904 Control circuit for variable characteristic rotating eddy current probe
10/22/1991US5059903 Method and apparatus utilizing a magnetic field for detecting degradation of metal material
10/22/1991US5059902 Electromagnetic method and system using voltage induced by a decaying magnetic field to determine characteristics, including distance, dimensions, conductivity and temperature, of an electrically conductive material
10/22/1991US5059891 Microwave method for detection of weak links in superconductors
10/22/1991US5059793 Scanning tunneling microscope having proper servo control function
10/22/1991US5059294 Hybridization of sample, direct and alternating current electrophoresis to separate hybrid
10/22/1991US5059290 Qualitative analysis of biological specimans
10/22/1991US5058556 Device for determining activated condition of an oxygen sensor
10/22/1991US5058416 Apparatus for the determination of the partial pressure of gases dissolved in a fluid
10/22/1991CA1291211C Ferrofluid penetrant testing
10/22/1991CA1291209C Chemical probe and enzyme sensor having anodized aluminum oxide membrane
10/22/1991CA1291208C Fast response time microsensors for gaseous and vaporous species
10/22/1991CA1290958C Channel device and tube connection and their fabrication procedures
10/20/1991WO1991015993A1 Implantable glucose sensor
10/18/1991CA2039537A1 Method of analyzing carbon monoxide in gas
10/17/1991WO1991015755A1 Process and device for determining the electrical conductivity of a test specimen made of superconducting material
10/16/1991EP0452162A1 Linear identification means for length, speed or positioning of flexible article of big length
10/16/1991EP0452071A2 Method and device for diagnosis of paint film deterioration
10/16/1991EP0452055A1 Surfaces with reduced protein interactions
10/16/1991EP0451701A1 Method for contactless measuring of electrical resistance of a material to be examined
10/16/1991EP0451576A2 Nitrate slective membrane
10/16/1991EP0451166A1 Monitoring method and apparatus
10/16/1991EP0432188A4 Improvements in sensitivity and selectivity of ion channel membrane biosensors
10/16/1991EP0422131A4 Inhomogeneity detection system
10/16/1991EP0290513B1 Method for detecting thickness variations in the wall of a current conducting tubular body
10/16/1991CN2086903U Multifunctional magnetic powder flaw-detecting machine
10/15/1991US5057430 Measurement of bubbles released by reaction of enzyme bound to substrate and analyte indicates concentration
10/15/1991US5057278 For measurement of blood gas concentration
10/15/1991US5057212 Water conductivity monitor and circuit with extended operating life
10/15/1991US5056928 Method and apparatus for measuring a change in state of a subject fluid
10/15/1991US5056355 Dust monitors and dust monitoring
10/15/1991CA1290750C Chromogenic cryptahemispherands and their use in detecting electrolytes in an aqueous test sample
10/12/1991WO1991015758A1 Methods and apparatus allowing sequential chemical reactions
10/12/1991CA2079005A1 Methods and apparatus allowing sequential chemical reactions
10/10/1991DE4111049A1 Plug connector for ion concentration measurement - has spring contact that short circuits when not engaged to prevent electrostatic discharge
10/09/1991EP0450987A2 Improvements relating to debris sample measurement devices
10/09/1991EP0450474A1 Sheet-type electrode for ion measurement
10/09/1991EP0450473A2 Apparatus for measuring ionic concentrations
10/09/1991EP0450202A1 Precalibrated disposable electrochemical sensing devices
10/09/1991EP0450090A1 Method of and device for measuring oxygen activity in slag and consumable type crucible used for said device
10/09/1991EP0366687B1 Manufacture of inert, catalytic or gas-sensitive ceramic layers for gas sensors
10/09/1991EP0330654B1 Gas sensor with cermet electrodes
10/09/1991EP0276305B1 Apparatus and method for measuring battery condition
10/09/1991CN2086415U Soil moisture monitoring controller
10/09/1991CN2086414U Air humidity linear changing transmission and control device
10/09/1991CN2086413U Flue-cured tobacco temp. and humidity test instrument
10/09/1991CN1055239A Defect-detection robot for high-presure caldron
10/08/1991US5055784 Bridgeless system for directly measuring complex impedance of an eddy current probe
10/08/1991US5055783 Magnetic field strength indicator for use prior to a magnetic particle inspection procedure
10/08/1991US5055517 Electrophoretic media
10/08/1991US5055415 Method for immunoassay procedure for the detection of antigen by reacting with antibody which increases its electrical charge and electrophoretic mobility
10/08/1991US5055270 Gas sensor
10/08/1991US5055269 Temperature limited catalytic gas detector apparatus
10/08/1991US5055172 Electrophoresis control system with wide dynamic range
10/08/1991US5055171 Nonporous solid composite encapsulating metallic electrode
10/08/1991US5054882 Multiple optical fiber event sensor and method of manufacture
10/08/1991US5054452 Method and apparatus for detecting a fault condition of a lambda probe
10/08/1991US5054325 Flow measurement by collision characterization
10/08/1991US5054317 Device for monitoring and/or measuring parameters of a running, thread-like or wire-like test material and method for operating the device
10/08/1991CA1290396C Checking of electrodes with activating layers
10/04/1991WO1991015595A1 An electronic technique of identifying an effective drug for treating a cancer patient
10/04/1991CA2079897A1 Electronic technique of identifying an effective drug for treating a cancer patient
10/03/1991WO1991015036A1 Measurement device and method for sorting used batteries and accumulators
10/03/1991WO1991014940A2 Measuring cell for determining the flow potential
10/03/1991WO1991014939A1 Gas sensors
10/03/1991WO1991014489A1 Electrophoretic media
10/03/1991CA2079219A1 Measurement device and method for sorting used batteries and accumulators
10/03/1991CA2078559A1 Electrophoretic media
10/03/1991CA2018088A1 Electronic gauge system
10/02/1991EP0449791A2 A method for determining the end of useful life of a gas purifier and apparatus therefor
10/02/1991EP0449753A1 Method and apparatus for inspecting metallic pipes by means of eddy currents
10/02/1991EP0449409A2 Probe unit, information processing device using same and methods of use and manufacture
10/02/1991EP0449221A2 Scanning probe microscope
10/02/1991EP0449166A2 Device for measuring the pH of liquid films
10/02/1991EP0448985A1 Scanning capacitance - voltage microscopy
10/02/1991EP0448817A2 Protective tube for oxygen sensors
10/02/1991DE4109909A1 Electrode system for voltametric measurement over wide pH range - contains glass carbon working electrode, metal counter and reference electrodes
10/02/1991DE4010493A1 Metal oxide sensor for detecting gas - with polymer organic semiconductor sensor contg. nitrogen e.g. poly-pyrrole to prevent masking by reducible gas
10/02/1991DE4009747A1 Electrochemical oxygen sensor - comprising potentiostatic cell with oxygen pumping action
10/02/1991DE4009746A1 Electrochemical gas sensor - with metal-metal oxide or partially reduced metal oxide electrodes
10/02/1991CN2085963U Film type dewing sensor
10/02/1991CN2085962U Intelligence smoke resistance measurer
10/02/1991CN2085961U Sample dynamic expansion controller of scanning electric mirror
10/01/1991US5053707 Apparatus for positioning a pick-up coil for detecting magnetic flux quantum trapped in a superconductor
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