| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 08/14/1990 | CA1272760A1 Electrochemical cell with inwardly narrowing barrier |
| 08/12/1990 | WO1990009586A1 Gas detector |
| 08/12/1990 | CA2046329A1 Gas detector |
| 08/09/1990 | WO1990008953A1 Circuit for measuring the internal resistance of a lambda sensor |
| 08/09/1990 | WO1990008807A1 Porous substrates with a high concentration of amine groups |
| 08/08/1990 | EP0381337A2 Apparatus and method for simultaneously effecting electro-chemical measurement and measurement of tunnelling current and tunnel probe therefor |
| 08/08/1990 | EP0381145A2 Method and apparatus for detecting defect in elongated metal strip |
| 08/08/1990 | EP0380804A1 Symmetrical probe for enzymatic measurements |
| 08/08/1990 | EP0380752A1 Apparatus for the determination of the alcohol content and/or the calorific value of fuels |
| 08/08/1990 | EP0380751A1 Apparatus for the determination of the alcohol content and/or the calorific value of fuels |
| 08/08/1990 | EP0380581A1 Fluid flow detector |
| 08/08/1990 | EP0380494A1 Seal for single wire o 2? sensor |
| 08/08/1990 | CN1044535A Detector and analyzar for rapid-determing of multi-dimensional characteristics and vectors of blood |
| 08/08/1990 | CA2009588A1 Measurement of electrochemical potential in low electrical conductivity environment |
| 08/07/1990 | US4947468 Bypass tandem chamber charge density monitor |
| 08/07/1990 | US4947339 Method and apparatus for measuring respiration, oxidation and similar interacting between a sample and a selected component of a fluid medium |
| 08/07/1990 | US4947132 Method for detecting thickness variations in the wall of a tubular body which conducts electricity |
| 08/07/1990 | US4947125 Method and device for determining oxygen in gases |
| 08/07/1990 | US4947117 Nondestructive detection of an undesirable metallic phase, T1, during processing of aluminum-lithium alloys |
| 08/07/1990 | US4947104 Device and method for detection of fluid concentration utilizing charge storage in a MIS diode |
| 08/07/1990 | US4947042 Tunnel unit and scanning head for scanning tunneling microscope |
| 08/07/1990 | US4947041 Analyzer tube for mass spectrometry |
| 08/07/1990 | US4946794 Visualization of proteins on electrophoresis gels using planar dyes |
| 08/07/1990 | US4946652 Apparatus for holding, washing and positioning by unskilled persons |
| 08/07/1990 | US4946613 Photosetting ferrofluid compositions |
| 08/07/1990 | US4946577 Solid electrolyte body; measurement and reference electrode |
| 08/07/1990 | US4946562 Determining the concentration of multi-component solution by contacting with ion specific sensors, receiving signals, conveying to processor, establishing constants, inputting into calculating device |
| 08/06/1990 | CA2009421A1 Micro-preparative electrophoresis apparatus |
| 08/06/1990 | CA2008179A1 Shielded capacitance standard |
| 08/02/1990 | DE3939850A1 Automatic electrophoresis unit - combines pye automatic performance of all consecutive operational stages |
| 08/02/1990 | DE3929283A1 Regenerierbare rauchgasanalysensonde Regenerable flue gas analysis probe |
| 08/02/1990 | DE3902422A1 Measured value transmitter after the style of a reference electrode or single rod measuring system with electrolyte and diaphragm and optionally electrolyte bridge |
| 08/02/1990 | DE3900119C1 Apparatus for measuring the urea concentration in an extracorporeal circulation |
| 08/01/1990 | EP0380357A2 Electrophoresis apparatus and method |
| 08/01/1990 | EP0380313A2 Field inversion electroblotting |
| 08/01/1990 | EP0379804A2 Transient electromagnetic apparatus for detecting irregularities on conductive containers |
| 08/01/1990 | EP0379644A1 Method for the determination of the alcohol content and/or the calorific value of fuels |
| 08/01/1990 | EP0379553A1 Gas testing apparatus. |
| 08/01/1990 | EP0379548A1 Determining dna sequences by mass spectrometry |
| 08/01/1990 | EP0147521B1 Control method for burning processes |
| 08/01/1990 | CN2059987U Catalytic air-sensing head |
| 07/31/1990 | WO1990009031A1 Plasma mass spectrometer |
| 07/31/1990 | US4945307 Electronic device for detecting irregularities in a surface of a solid object |
| 07/31/1990 | US4945306 Coil and Hall device circuit for sensing magnetic fields |
| 07/31/1990 | US4945234 Method and apparatus for producing an arbitrary excitation spectrum for Fourier transform mass spectrometry |
| 07/31/1990 | US4945062 Control for blood gas/calcium analysis instrumentation |
| 07/31/1990 | US4945045 Electrochemical methods of assay |
| 07/31/1990 | US4944861 Hermetic sealing, durability |
| 07/31/1990 | US4944483 Apparatus for forming fiber reinforced slab gel for use in electrophoresis |
| 07/31/1990 | US4944274 Air-fuel ratio control apparatus for internal combustion engines |
| 07/31/1990 | CA1272265A1 Method for directly detecting corrosion on conductive containers |
| 07/31/1990 | CA1272262A1 Combined smoke and gas detection apparatus |
| 07/28/1990 | WO1990008783A1 Receptor membranes and ionophore gating |
| 07/26/1990 | WO1990008398A1 A method of preparing samples for mass analysis by desorption from a frozen solution |
| 07/26/1990 | WO1990007978A1 Polysaccharide resolving gels and gel systems for stacking electrophoresis |
| 07/26/1990 | DE4001274A1 Dynamic measurement of high value ohmic resistance - using pulse shaping and timing to reduce polarisation and capacitive effects during measurement phase of overall cycle time |
| 07/26/1990 | CA2008572A1 Regenerable smoke gas analysis probe |
| 07/25/1990 | EP0378879A2 Support and translation system for operational units of medical equipment |
| 07/25/1990 | EP0378878A2 Unit for the treatment of electrophoretic strips |
| 07/25/1990 | EP0378648A1 Icr ion trap. |
| 07/24/1990 | US4943471 Patterned thin film and process for preparing the same |
| 07/24/1990 | US4943330 Oxygen sensor for exhaut gases of internal combustion engine, zirconia |
| 07/24/1990 | CA1271931A1 Capacitance monitoring bridge circuit for an enthalpy responsive device |
| 07/19/1990 | DE3913814A1 Electro-elution of charged cpds. bonded to sepn. gel - in appts. comprising two electrode chambers connected by gel receiving containers, for recovering nucleic acid, proteins, etc. |
| 07/18/1990 | EP0378281A2 Time of flight mass spectrometer |
| 07/18/1990 | EP0377974A2 Measurement and/or analysis of a variable volume sample |
| 07/18/1990 | EP0377792A1 Sensor for determining the gas concentration in a gas mixture by measuring the reaction heat |
| 07/18/1990 | EP0377782A2 Method for the determination of the alcohol content and/or the calorific value of fuels |
| 07/18/1990 | EP0377649A1 Halogenated surface with reduced protein interaction. |
| 07/18/1990 | EP0377600A1 Process and device for lambda-value determination and use of same. |
| 07/18/1990 | EP0377555A1 A high resolution magnetometer |
| 07/18/1990 | CN1043990A Multivariant oxide ceramics humidity element |
| 07/18/1990 | CA2025771A1 A method for preparing samples for mass analysis by desorption from a frozen solution |
| 07/17/1990 | US4942545 Calibration of eddy current profilometry |
| 07/17/1990 | US4942364 High speed response, accuracy |
| 07/17/1990 | US4942354 Process for monitoring the effectiveness of repairs made to zones of reinforced concrete structures |
| 07/17/1990 | US4942133 Procedure for the continuous analysis of the chloride ions present in the overhead waters of a hydrocarbon distillation column |
| 07/17/1990 | US4941958 Ion exchanging, photolithography |
| 07/17/1990 | US4941770 Method for applying a conductor layer on a road surface and arrangement of a heating layer on a road surface |
| 07/17/1990 | US4941753 Absorption microscopy and/or spectroscopy with scanning tunneling microscopy control |
| 07/17/1990 | CA1271811A2 Metal terminal electrode for electrochemical cell |
| 07/12/1990 | WO1990007710A1 Monitoring method and apparatus |
| 07/12/1990 | WO1990007709A1 Process and device for the analysis of an oxidizing gas such as oxygen |
| 07/12/1990 | WO1990007708A2 Capacitive humidity sensor |
| 07/12/1990 | WO1990007705A1 Arrangement for detecting metallic particles carried by a fluid |
| 07/12/1990 | WO1990007575A1 Stabilized microporous materials and hydrogel materials |
| 07/12/1990 | WO1990007545A2 Stabilized microporous materials and hydrogel materials |
| 07/12/1990 | CA2045533A1 Stabilized microporous materials and hydrogel materials |
| 07/11/1990 | EP0377277A1 Method and apparatus for detection and location of insulation defects |
| 07/11/1990 | EP0377226A1 Rain-dependent control of coverings |
| 07/11/1990 | EP0377037A1 Enzyme sensor and method of manufacturing same |
| 07/11/1990 | EP0377036A1 Ion sensor |
| 07/11/1990 | EP0377016A1 Process for separation and recovery of charged molecules |
| 07/11/1990 | EP0376952A1 Limiting current-type sensor for polarographic measurement |
| 07/11/1990 | EP0232416B1 Process for identifying compounds which can absorb or release electrons after catalysis by enzymes |
| 07/11/1990 | CN2059244U Ionic measuring instrument for human body urine |
| 07/11/1990 | CN1043830A Method for making zinc metastannate gas-sensitive component for butane |
| 07/10/1990 | US4940946 Pool water sensor with an extendible pronged probe for determining pH and chlorine levels |
| 07/10/1990 | US4940945 Interface circuit for use in a portable blood chemistry measuring apparatus |
| 07/10/1990 | US4940939 Apparatus with inductive loop synchronized oscillators for measuring the magnetic content of non-metallic samples |