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)
12/1990
12/18/1990US4978921 Electrode probe for use in aqueous environments of high temperature and high radiation
12/18/1990US4978917 Method for nondestructive measurement of heat affected zone of identification code on nuclear fuel rod
12/18/1990US4978574 Formation of organic membranes
12/18/1990US4978503 Devices for use in chemical test procedures
12/18/1990US4978434 Apparatus and method for measuring SO2 using a zirconium oxide analyzer
12/18/1990US4977776 Gas mixing device and gas analyzer making use of the same
12/18/1990US4977658 Electrodes of electroconductor thin films formed by pyrolysis of organo-metallic compounds
12/18/1990CA1278107C Mass spectrometers
12/18/1990CA1278040C Residual analyzer assembly
12/15/1990CA2019039A1 Biosensors employing electrical, optical and mechanical signals
12/13/1990WO1990015323A1 Surface type microelectronic gas and vapor sensor
12/12/1990EP0402126A1 Homogeneous amperometric immunoassay
12/12/1990EP0401861A2 Explosive detection screening system
12/12/1990EP0401852A2 Surface microscope
12/12/1990EP0401821A1 Electrophoresis pattern reading system of fluorescence type
12/12/1990EP0401724A2 Measurement of electrical resistivity of particulate entrained in a gas stream
12/12/1990EP0401658A1 Scanning tunneling microscope with arrangements for detecting electrons coming from the sample
12/12/1990EP0401600A2 Device for monitoring and/or measuring parameters of running test materials in form of thread or wire and method for operating the device
12/12/1990EP0401257A1 Method and system for measuring the corrosion properties of specimens.
12/12/1990CN2067409U Filter membrane electrophoretic bath
12/11/1990US4977373 Barkhausen noise method for determining biaxial stresses in ferromagnetic materials
12/11/1990US4977318 Procedure and means for measuring radon content in the air
12/11/1990US4977094 Comparing electrical impedance of samples vaporized at different temperatures and condensed
12/11/1990US4976994 Method for modifying diffusion selectivity of porous fritted carbonaceous electrode
12/11/1990US4976991 Printing solid electrolyte, metal or metal oxide detector electrode, sodium tungsten bronze reference electrode onto substrate
12/11/1990US4976844 Sealed, insulated structure for pressurized conditions
12/11/1990US4976549 Apparatus and method for direct measurement of coal ash sintering and fusion properties at elevated temperatures and pressures
12/11/1990CA1277710C Magnetic flux leakage probe for use in nondestructive testing
12/11/1990CA1277707C Scanning combination thickness and moisture gauge for moving sheet material
12/11/1990CA1277509C Gas monitor circuits
12/09/1990CA2017525A1 Homogeneous amperometric immunoassay
12/07/1990WO1990015658A1 Miniaturized mass spectrometer system
12/06/1990DE4025841A1 Capacitive measurement arrangement - uses partial electrodes for constant sensitivity across tube to measure conc. of fine grain dielectric moving in delivery tube
12/06/1990DE3917853A1 Identification appts. for unknown gaseous substances
12/06/1990DE3917519A1 Identification appts. for unknown gaseous substances
12/06/1990DE3917353A1 Boosting compensating pressure between test medium - and reference electrode, by auxiliary hydrostatic difference
12/05/1990EP0401164A1 Method for controlling a thermal treatment with carbon diffusion
12/05/1990EP0401033A2 Capillary electrophoretic device employing structure permitting electrical contact through ionic movement
12/05/1990EP0400968A2 Electrode for electrochemical detectors
12/05/1990EP0400813A2 Reference electrode probe
12/05/1990EP0400627A2 Nox concentration measuring apparatus
12/05/1990EP0400488A2 Gas measuring cell
12/05/1990EP0400063A1 Thin film moisture sensing elements and process for the manufacture thereof.
12/05/1990EP0400042A1 Metal oxide electrodes.
12/05/1990EP0382736A4 Receptor membranes
12/05/1990EP0358693A4 Sintered pellet with biochemically active layer
12/05/1990CN1047567A Device for inserting and positioning tool inside heat exchanger tube and use of this device
12/05/1990CA2018083A1 Measurement of electrical resistivity of particulate entrained in a gas stream
12/04/1990US4975648 Discharge ionization detector
12/04/1990US4975645 Impedance cross correlation logging tool for two phase flow measurement
12/04/1990US4975379 Using crypt, crown compounds
12/04/1990US4975249 Optical and capacitance type, phase transition, humidity-responsive devices
12/04/1990US4975175 Miniaturized oxygen electrode and miniaturized biosensor and production process thereof
12/04/1990US4975174 Vertical gel electrophoresis device
12/04/1990US4975173 Electrophoresis plate and method of making same
12/04/1990US4975170 Back support for an electrophoresis gel plate assembly
12/04/1990US4975165 Two-dimenstional electrophoretic separation of carbohydrates
12/04/1990US4974592 Continuous on-line blood monitoring system
12/04/1990CA1277389C Dust flow inducing monitor
12/04/1990CA1277370C Method of measuring the effective inhibitor concentration during a deposition of metal from aqueous electrolytes and an apparatus therefor
12/04/1990CA1277215C Reference liquid comprising cscl
12/04/1990CA1277155C In situ bs&w measurement
12/01/1990CA2017515A1 Capillary electrophoretic device employing structure permitting electrical contact through ionic movement
11/1990
11/29/1990WO1990014687A1 Method and apparatus for producing an arbitrary excitation spectrum for fourier transform mass spectrometry
11/29/1990WO1990014148A1 Multiply charged ions and a method for determining the molecular weight of large molecules
11/29/1990DE3917099A1 Eddy current probe detecting damage in ferromagnetic pipes - has coil with linked pole bodies enabling testing of curved pipes with small radii of curvature
11/29/1990DE3916805A1 Ion exchange is monitored and/or controlled
11/29/1990DE3844659A1 Micromanipulator
11/29/1990CA2032490A1 Multiply charged ions and a method for determining the molecular weight of large molecules
11/28/1990EP0399863A1 Device for the introduction and the positioning of a tool into a pipe of a steam generator and use of that device
11/28/1990EP0399227A1 Sensor assembly for measuring analytes in fluids
11/28/1990EP0399101A1 Method of producing a constant reference potential and of measuring the pH-value and pH-meter for analytical chemistry
11/28/1990EP0225474B1 Test strip identification
11/28/1990CN2066581U Oasting rate sensor for silkworm cocoon
11/28/1990CN1010612B Device for measuring accumulator electrolyte parameters
11/27/1990US4973395 Humidified high sensitivity oxygen detector
11/27/1990US4973394 Immobilized valinomycin molecule for K+ sensor
11/27/1990CA1277002C Coin detection means and method
11/27/1990CA1276982C Method of and apparatus for testing a wire rope
11/23/1990CA2016846A1 Device for introducing and locating of tools in the tube of a heat exchanger, and use of same
11/22/1990EP0398800A1 Particle sensor with electric detection
11/22/1990EP0398792A1 Apparatus for the positioning of equipment in a cylindric cavity having perforations arranged in a regular pattern
11/22/1990EP0398719A2 Improvements in apparatus for particle determination in liquid metals
11/22/1990EP0398687A2 Method and apparatus for detecting odors
11/22/1990EP0398634A2 Bias current control for potentiometric measurements
11/22/1990EP0398625A2 Gas sensor
11/22/1990EP0398594A2 Means to detect and locate pinching and chafing of conduits
11/22/1990EP0398593A2 Apparatus for detecting excessive chafing of a cable arrangement against an electrically grounded structure
11/22/1990EP0398587A2 A method of encapsulation for devices
11/22/1990EP0398579A2 Gas sensor
11/22/1990EP0398388A1 Electrophoresis film support
11/22/1990EP0398286A2 Ammonia sensor
11/22/1990EP0397868A1 Film-coated sensor
11/22/1990EP0397846A1 Electrographic process for generating an electrical image signal
11/22/1990EP0397799A1 A piezoelectric motion transducer and an integrated scanning tunneling microscope using the same.
11/22/1990EP0397784A1 A method for immobilizing a polypeptide in a polymer and a membrane produced thereby.
11/22/1990EP0397699A1 Automated capillary electrophoresis apparatus.
11/22/1990DE3916047A1 Multiple-shell points for contactless scanning microscopy - has metal cores, dielectric and metal coatings coaxial cable-like structure, with differently shaped ends
11/20/1990US4972325 Dna sequences determined by radioactice labels on a support
11/20/1990US4972179 Liquid leakage detection apparatus including wheatstone bridge
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