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)
11/1981
11/25/1981EP0040323A1 Test method for ferromagnetic powders
11/25/1981EP0040322A1 Test method for determining the magnetic properties of ferromagnetic powders
11/24/1981US4302721 Non-contacting resistivity instrument with structurally related conductance and distance measuring transducers
11/24/1981US4302530 Semiconductors
11/24/1981US4302315 Gold sensing electrode
11/24/1981US4302314 Voltammetric cell, measuring electrode and method
11/24/1981US4302313 Liquid ion analysis
11/24/1981US4302312 Device for producing control signal for feedback control of air/fuel mixing ratio
11/24/1981US4302299 Intermittent, electric signal of potential
11/18/1981EP0039956A2 Apparatus for analysing gas by thermal conductivity
11/18/1981EP0039793A2 Method and apparatus to read a flaw signal
11/17/1981US4301414 Disposable sample card and method of making same
11/17/1981US4301413 Circuit arrangement for amperometric titration
11/17/1981US4301412 Liquid conductivity measuring system and sample cards therefor
11/17/1981US4301409 Solar cell anomaly detection method and apparatus
11/17/1981US4301401 Dielectric constant detector
11/17/1981US4301118 Protein concentrator
11/17/1981US4301116 Sample tray feeding apparatus for use with an automated analyzer
11/17/1981US4300991 Air-fuel ratio detecting apparatus
11/17/1981US4300990 Electrochemical sensor element construction
11/17/1981CA1112769A1 Substance-sensitive electrical structures and method for making same
11/17/1981CA1112605A1 Apparatus for electrowinning multivalent metals
11/17/1981CA1112476A1 Piezoelectric gum measurement device
11/17/1981CA1112475A1 Exhaust gas sensor electrical circuit improvement
11/17/1981CA1112474A1 Apparatus for the detection and the measurement of hydrogen concentration in a liquid
11/17/1981CA1112438A1 Oxygen sensors
11/12/1981WO1981003226A1 Apparatus and method for image reproduction of materials using their magnetic and electric properties
11/11/1981EP0039668A1 Apparatus for leading a partial fluid flow from a conduit
11/11/1981EP0039549A2 Method of checking the responsiveness of detection systems employing electrochemical sensor
11/11/1981EP0039504A1 Adsorbent fractionator with automatic cycle control and process
11/10/1981US4300133 Smoke detector
11/10/1981US4300094 Finish measuring method and apparatus
11/10/1981US4299859 Masking part of surface, applying first resistive material, removal of mask, applying second resistive material to entire surface
11/10/1981US4299627 Compression molding solid electrolyte, forming oxygen sensor in solid electrolyte, sintering, forming electrode on exterior surface
11/04/1981EP0039136A2 Electrode device, method for its preparation, and dispersion useful in the method
11/04/1981EP0039019A1 Equipment for the continuous contactless control of the structural condition of a cold-drawn band
11/04/1981EP0038821A1 Detecting particles
11/03/1981US4298855 Conductive polymer film humidity sensor
11/03/1981US4298795 Method and apparatus for introducing samples to a mass spectrometer
11/03/1981US4298573 Device for detection of oxygen concentration in combustion gas
11/03/1981US4298449 Sample tray feeding apparatus
11/03/1981CA1111928A1 Dew-sensing hygroscopic element
10/1981
10/29/1981WO1981003071A1 Improvements in or relating to a method and apparatus for detecting the presence of contaminants in a gaseous carrier
10/28/1981EP0038637A1 Improvements in or relating to a method and apparatus for detecting the presence of contaminants in a gaseous carrier
10/28/1981EP0038551A1 Device for the contactless determination of the position and/or of the dielectric properties of objects
10/28/1981EP0038326A1 Device allowing the detection in solids, liquids or gases, of the metal particles included, the location thereof and the determination of their size
10/27/1981US4297689 Personnel-carried dosimeter
10/27/1981US4297640 Apparatus for measuring the electric charge condition of non-conductive particles in a mildly conductive electrolyte
10/27/1981US4297636 Magnet and probe mounting means on a rotating head of magnetic defect testing apparatus
10/27/1981US4297199 Means to pre-wet carrier with electrolyte
10/27/1981US4297198 Concentrating electrophoresis apparatus
10/27/1981US4297193 pH Electrode glass compositions
10/27/1981US4297192 Catalyst supported oxygen sensor element and a method of manufacturing same
10/27/1981CA1111491A1 Device for measuring the concentration of toner in a developer mixture
10/21/1981EP0038078A1 Gas sensor
10/20/1981US4296399 Microminiature palladium oxide gas detector and method of making same
10/20/1981US4296148 Method to apply multiple layers, including an electrode layer, on a sintered or pre-sintered ion conductive solid electrolyte body
10/20/1981US4295949 Method for determining boundary points in electrophoresis
10/20/1981US4295939 Sulfur dioxide or carbon dioxide using a potentiometer
10/20/1981US4295856 Nitrosamine specificity for electrolytic conductivity detector
10/20/1981CA1110868A1 Terminal pin arrangement for an exhaust gas sensor
10/20/1981CA1110867A1 Exhaust gas sensor having two titania ceramic elements
10/15/1981WO1981002831A1 Apparatus and method for measuring the partial pressure of oxygen and of a gas which in aqueous solution generates an acid or a base
10/14/1981EP0037792A1 Device for measuring the level of slag in a furnace for molten metal during pig iron refining
10/14/1981EP0037701A2 Method and apparatus for forming electrical contact with an analysis slide
10/13/1981US4295092 Apparatus for and method of detecting and measuring corrosion damage in pipe
10/13/1981US4295028 Combination of gas sensor controlled cooking utensil and gas leak alarm
10/13/1981US4294801 For exhaust gases in catalytic systems
10/13/1981US4294684 Template for forming multiple gel tracks within a single electrophoretic gel frame
10/13/1981US4294679 Detection of oxygen from exhaust gases
10/13/1981US4294668 Method of measuring oxygen and process for pretreating a solid electrolyte oxygen gas sensing element
10/13/1981US4294667 Corrosion evaluation testing method of coated metallic material and apparatus employed therefor
10/13/1981US4294656 Process for measuring the state of charge of suspensions and for controlling the addition of auxiliary agents to the suspensions
10/13/1981US4294258 Measuring head enabling the production of physiological measurement signals designed to be positioned on or in corporeal parts
10/13/1981US4294105 Mass sensing element
10/13/1981CA1110702A1 Ion-sensitive electrode and processes for making the same
10/13/1981CA1110701A1 Electrochemical reference cell with improved liquid junction
10/13/1981CA1110700A1 Process to measure the distribution of the anode currents in cells for alkali metal chloride electrolysis
10/13/1981CA1110699A1 Electrochemical device
10/13/1981CA1110698A1 Method and apparatus for measuring in situ density and fabric of soils
10/13/1981CA1110466A1 Method and apparatus for measuring the o.sub.2 content of a gas
10/13/1981CA1110465A1 Process and device for the evaluation of photometric measurement values
10/06/1981US4293399 Device for detecting and measuring the concentration of gaseous hydrogen dissolved in a fluid
10/06/1981US4292849 Method for correcting the sensitivity of an electromagnetic ultrasonic probe
10/06/1981CA1110370A1 Apparatus and a method for detecting and measuring trace gases in air or other gas backgrounds
10/06/1981CA1110327A1 Po.sub.2/pco.sub.2 sensor
10/01/1981WO1981002791A1 Process for detecting proteins specific to hypertension in mammals
10/01/1981WO1981002790A1 New solid supports for proteins for analytical purposes
09/1981
09/30/1981EP0036786A1 Zirconia ceramics and a method of producing the same
09/30/1981EP0036487A1 Karl Fischer reagent without pyridine and method for the determination of water using this reagent
09/29/1981US4292589 Determining defects in oil well casings
09/29/1981US4292162 A solution of tris buffer, hippuric acid, and a water-soluble hippurate
09/29/1981US4292161 Vertical gel slab electrophoresis apparatus
09/29/1981US4292158 Oxygen sensor of the polarographic type, particularly for use with internal combustion engines
09/29/1981US4292157 Solid pole oxygen sensor and its manufacturing process
09/29/1981US4292154 Buffer composition and method for the electrophoretic separation of proteins
09/29/1981US4292039 Method and apparatus for controlling dissolved solid concentrations
09/29/1981US4291572 Method and system for controlling the temperature of a heat measuring sensor especially in motor vehicles
09/23/1981EP0036336A2 Process for detecting proteins specific to hypertension in mammals
09/23/1981EP0036303A1 Process for analyzing anions and process for treating radioactive liquid waste utilizing the same
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