Patents
Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839)
03/1994
03/08/1994US5292420 Two-dimensional gel electrophoresis apparatus
03/08/1994US5292416 Electophoresis
03/08/1994US5292413 Solution of salts of organic nitrogen base and acid
03/08/1994US5292007 Method of and apparatus for continuous non-destructive testing of bar-shaped specimens
03/08/1994US5291791 Capacitance flow meter
03/08/1994CA2031004C Windshield moisture sensor
03/08/1994CA2001652C Pyroelectric sensing apparatus
03/03/1994WO1994005048A1 Ion-conducting module having axially-arranged solid state electrolyte elements
03/03/1994WO1994004913A1 Polarographic sensor
03/03/1994WO1994004912A1 Chlorine sensor
03/03/1994WO1994004911A1 Polarographic sensor
03/03/1994WO1994004910A1 Test probe for measurement of moisture in structural material
03/03/1994WO1994004614A1 Metal-mediated cross-coupling with ring-metalated porphyrins
03/03/1994WO1994004252A1 Method for generating filtered noise signal and broadband signal having reduced dynamic range in mass spectrometry
03/03/1994WO1994004241A2 Polymerized polysiloxane membrane for oxygen sensing device
03/03/1994WO1993022055A3 Fluid handling in microfabricated analytical devices
03/03/1994DE4239224C1 Verfahren und Vorrichtung zur Erfassung von strukturellen Veränderungen in festen Körpern Method and device for the detection of structural changes in solid bodies
03/03/1994CA2142716A1 Test probe for measurement of moisture in structural material
03/03/1994CA2139318A1 Chlorine sensor
03/02/1994EP0585113A2 Detecting an analyte in the gaseous or vapour phase by bioelectrochemical reactions and media therefor
03/02/1994EP0584794A2 Electrobiochemical analytical method and electrodes
03/02/1994EP0584777A1 Semiconductor device and process for producing the same
03/02/1994EP0584568A1 System of detecting and measuring sulfides in a sample
03/02/1994EP0584557A1 A device and method for sensing water and acid in the presence of water in nonaqueous media
03/02/1994EP0584377A1 Method and apparatus for analyzing organic matters using transportable construction
03/02/1994EP0584262A1 Tandem time-of-flight mass spectrometer.
03/02/1994EP0584258A1 Apparatus and method for imaging the structure of diamagnetic and paramagnetic objects
03/02/1994EP0505421B1 Method for detecting and measuring cracks in metal lattice structures
03/02/1994EP0403615B1 Process and device for detecting an error status in a lambda probe
03/02/1994CN2158086Y Anti-leak monitoring device for burning line
03/02/1994CN2158079Y Digital humidity-temperature display instrument
03/02/1994CN1083217A Method for positioning plate material by use of constant magnetic field
03/02/1994CN1083216A Portable atmosphere monitor
03/01/1994US5291418 Adjustment of electric potential by automatic titration
03/01/1994US5291417 Method and arrangement for determining the internal resistance of a lambda probe and for the closed-loop heating control with the aid of the internal resistance
03/01/1994US5291142 Method and apparatus for measuring the resistance of conductive materials due to electromigration
03/01/1994US5291136 Variable angle eddy current probe
03/01/1994US5290421 Oxygen sensor lead wire
03/01/1994US5290420 Testing electrode, counterelectrode, reference electrode, testing reagent, capillary inlet permitting uptake of material being sampled
03/01/1994US5290419 Fluorescence detection type electrophoresis apparatus
03/01/1994US5290418 Matrix of aqueous medium with aggregated copolymers composed of hydrophilic polymer segments of uniform lengths and hydrophobic polymer segments carried on and spaced from one another by hydrophilic segments; biopolymer separation
03/01/1994US5290411 Acrylated resins of polyalkylene ethers
03/01/1994US5290408 Probe for measuring liquid buffering capacity
03/01/1994US5289717 Air-fuel ratio detecting device
03/01/1994CA2104928A1 Monitoring bioelectrochemical reactions and novel media for bioelectrochemical reactions
02/1994
02/26/1994CA2104711A1 Electrobiochemical analytical method and electrodes
02/24/1994DE4238337A1 Measurement cell for determn. of ammonia or hydrazine in a gas or liq. sample
02/24/1994DE4227735A1 Electrically-conductive-film thickness contactless measuring system - has inductive sensors located on opposite sides of substrate for generating sequential mutually attracting and repelling AC magnetic fields, to create eddy currents effects in film for comparison
02/24/1994DE4227734A1 Thin film thickness contactless measuring system e.g. for electrically-conductive film - has inductive sensors located on either side of film for generating AC magnetic field towards and away from film, by rotation of sensor into upright and inverted positions
02/24/1994DE4227686A1 Measuring gas density in gas insulated systems - involves using special heating wire or functional wire to measure heat transport as measure for gas density
02/24/1994DE4227338A1 Flow measurement for liquid analysis - by passing measurement liquid, air and cleaning and/or buffer solution past bio-sensor in defined repeated sequence
02/24/1994DE4227323A1 Semi-automatic liquid analysis - involves passing measurement liquid, air and cleaning and/or buffer soln. past biosensor in defined repeated sequence
02/23/1994CN2157517Y Wire rope flaw detector
02/23/1994CN2157516Y Carbonifying conversion tester
02/23/1994CN2157515Y Quick cocoon moisture content tester
02/23/1994CN1082713A Standard test liquid for electrolyte analyzer
02/22/1994US5289132 Voltage characteristic comparator for discriminating solutions
02/22/1994US5288678 Indirect potentiometric method and diluent for analysis of lithium
02/22/1994US5288636 Enzyme electrode system
02/22/1994US5288563 Hydrogen ion concentration sensor and lead-acid battery having the sensor
02/22/1994US5288465 Cassetes for electrophoretic gels
02/22/1994US5288389 Oxygen sensor with higher resistance to repeated thermal-shocks and shorter warm-up time
02/22/1994US5288388 Homogeneous potentiometer sensor
02/22/1994US5288375 Method for determining relative amount of oxygen containing gas in a gas mixture
02/22/1994US5288374 Blood, urine using ion selective electrodes
02/22/1994US5287752 Measurment of gas and liquid flowrates and watercut of multiphase mixtures of oil, water and gas
02/17/1994WO1994003817A1 Moisture sensing method and apparatus
02/17/1994WO1994003802A1 An instrument for the determination of the water fraction in a stream of liquid hydrocarbons also in the presence of gas
02/17/1994WO1994003798A1 Method and device for determining phase-structure inhomogeneity parameters in near-surface layer of metals and alloys
02/17/1994WO1994003797A1 Electrode material for potentiometric oxygen probe operating at temperatures below 250 °c, and method of manufacture
02/17/1994WO1994003796A1 Arrangement for continuously monitoring the no concentration in gas mixtures
02/17/1994WO1994003795A1 Device for the continuous monitoring of the no concentration in gas mixtures
02/17/1994WO1994003643A1 Electrophoresis of nucleic acid fragments
02/17/1994WO1994003631A1 Differential separation assay methods and test kits
02/17/1994DE4326373A1 Fluid alcohol content measurement appts. for liquid fuel - registers the dielectric constant without resonance frequency interference
02/17/1994DE4226537A1 Polarographischer Sensor Polarographic sensor
02/17/1994DE4208957A1 Membrane for potassium-sensitive electrode - used to determine potassium concns. in urine or blood, and in plants and soils, comprises potassium titanium phosphate type single crystal
02/17/1994CA2141802A1 Differential separation assay methods and test kits
02/16/1994EP0583071A1 Wide range workfunction based A/F sensor
02/16/1994EP0583057A1 Rotating cylinder throwing power electrode
02/16/1994EP0582830A1 Ceramic planar sensor for detection of combustable gases
02/16/1994EP0582636A1 Half-cell with a solid-state reference electrode for a ceramic sensor
02/16/1994EP0526479B1 Process for determining gas concentrations and gas sensor with solid electrolyte
02/16/1994CN2156508Y Coulometric titration tank
02/16/1994CN2156507Y Gas poisoning proof alarm device
02/16/1994CN1082194A Thick film type PH glass electrode able to be disinfected
02/15/1994US5287061 On line triboelectric probe contamination detector
02/15/1994US5287060 In-tank conductivity sensor
02/15/1994US5287059 Saturable core magnetometer with a parallel resonant circuit in which the W3 DC level changes with a change in an external magnetic field
02/15/1994US5286651 Determining collective fluid inclusion volatiles compositions for inclusion composition mapping of earth's subsurface
02/15/1994US5286434 Processes for the preparation and separation of macromolecules
02/15/1994US5286365 Graphite-based solid state polymeric membrane ion-selective electrodes
02/15/1994US5286363 Dynamic microchamber for measuring formaldehyde emissions
02/15/1994US5286357 Corrosion sensors
02/15/1994US5286356 Controlling migration times
02/15/1994US5285762 Method and arrangement for monitoring the operability of a probe heating device
02/15/1994US5285677 Selective gas detection by field separation and velocity of sound determination, especially O2 detection
02/10/1994DE4225775A1 Anordnung zum kontinuierlichen Überwachen der Konzentration von NO in Gasgemischen Arrangement for continuously monitoring the concentration of NO in gas mixtures
02/10/1994DE4225624A1 Carbon di:oxide sensor for continuous measurement in air for environmental control - based on galvanic cell with sodium ion conducting solid electrolytes contg. no carbonate and electrodes of precious metal
02/09/1994EP0582376A1 Displacement element, cantilever probe and information processing apparatus using cantilever probe