| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) | 
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| 09/19/1989 | US4868491 Apparatus for monitoring the moisture content of hay as it is being formed into a bale | 
| 09/19/1989 | US4868386 Method and apparatus for measuring radon content in the air | 
| 09/19/1989 | US4868127 Instrument for measurement of the organic carbon content of water | 
| 09/19/1989 | US4867947 Endless belts | 
| 09/19/1989 | US4867860 Method of manufacturing ion-selective electrodes for analyzing selected ions in solution | 
| 09/19/1989 | US4867855 Method and apparatus for separating complex mixtures of bio-organic materials | 
| 09/19/1989 | CA1259710A1 Kinematic arrangement for the micro-movements of objects | 
| 09/19/1989 | CA1259709A1 Apparatus and method for applying a dissolved sample from a liquid chromatograph to a chemical ionization mass spectrometer | 
| 09/19/1989 | CA1259657A1 Complete glucose monitoring system with an implantable, telemetered sensor module | 
| 09/13/1989 | EP0332125A2 Controlled-growth mercury drop electrode | 
| 09/13/1989 | EP0332110A2 Method for measurement of viscosity change in blood or blood plasma and sensor therefor | 
| 09/13/1989 | EP0332048A2 Multiple coil eddy current probe and method of flaw detection | 
| 09/13/1989 | EP0331696A1 Noise reduction technique for electrochemical cells | 
| 09/13/1989 | CN2044349U High stable ionic or biologic tester | 
| 09/12/1989 | US4866383 Method and apparatus having load cell responsive to movement of a magnetic field generator for differentiating between materials | 
| 09/12/1989 | US4866278 Gas chromatography | 
| 09/12/1989 | US4866270 Method and apparatus for the determination of isotopic composition | 
| 09/12/1989 | US4866267 Double-focusing mass spectrometer having Wien filter and MS/MS instrument using such spectrometer | 
| 09/12/1989 | US4865995 Method for measuring a concentration of saccharides having a low molecular weight and sensor for measuring the same | 
| 09/12/1989 | US4865717 Electrochemical micro sensor | 
| 09/12/1989 | US4865716 Sensor arrangements | 
| 09/12/1989 | US4865715 Electrophoresis device with near-vertical gel plates | 
| 09/12/1989 | US4865714 Electrophoretic gel cooled cell | 
| 09/12/1989 | US4865707 Hydrophilic polymer within crosslinking polymer gel filling | 
| 09/12/1989 | US4865706 High performance microcapillary gel electrophoresis | 
| 09/12/1989 | US4865698 Reference solution for measuring ionic activity | 
| 09/12/1989 | US4865090 Vial holder | 
| 09/12/1989 | US4864850 Method and apparatus for continuously monitoring the moisture content of a material | 
| 09/12/1989 | CA1259374A1 Capacitive sensor for chemical analysis and measurement | 
| 09/08/1989 | WO1989008250A1 Automated eddy current metal hardness measurement system | 
| 09/08/1989 | WO1989008249A1 Electrochemical gas sensor | 
| 09/08/1989 | WO1989008100A1 Polyacrylamide gels for improved detection of proteins | 
| 09/08/1989 | WO1989007259A3 Integrated scanning tunneling microscope | 
| 09/08/1989 | WO1989007258A3 Integrated scanning tunneling microscope | 
| 09/07/1989 | DE3906885A1 Image generating device | 
| 09/06/1989 | EP0331513A2 Oxygen sensor and method of producing the same | 
| 09/06/1989 | EP0331148A2 Microscope apparatus | 
| 09/06/1989 | EP0331050A2 Oxygen concentration-detecting apparatus | 
| 09/06/1989 | EP0330897A2 Apparatus for determining base sequence of nucleic acid | 
| 09/06/1989 | EP0330775A1 Oxygen-sensing element | 
| 09/06/1989 | EP0176544B1 Investigation of condition of biological particles | 
| 09/06/1989 | CN2044072U Oscillograph polarographi electrolyzzer signal amplifier | 
| 09/06/1989 | CN2044071U Quiver-proof alcohol sensitive current breaker | 
| 09/06/1989 | CN1035358A Method of analyzing chromatograph of organic compounds and opparatus for performing this method | 
| 09/05/1989 | US4864462 Capacitive gas detector having a solid rare earth fluoride dielectric | 
| 09/05/1989 | US4864239 Cylindrical bearing inspection | 
| 09/05/1989 | US4864236 Wire inhomogeneity detector having a core with opposing pole pieces and guide pieces adjacent the opposing pole pieces | 
| 09/05/1989 | US4864235 Phase-selective monitoring via vector transformation | 
| 09/05/1989 | US4864234 Transducers and method for making same | 
| 09/05/1989 | US4864233 Magnetic detection of air gaps formed at breaks in conveyor belt cards | 
| 09/05/1989 | US4864229 Method and apparatus for testing chemical and ionic sensors | 
| 09/05/1989 | US4863873 Method for biological testing and/or developing pharmaceuticals for treatment of disorders | 
| 09/05/1989 | US4863813 Primary source of electrical energy using a mixture of fuel and oxidizer | 
| 09/05/1989 | US4863647 Process for preparation of electrophoresis gel material | 
| 09/05/1989 | US4863584 Apparatus for sensing air-fuel ratio | 
| 09/05/1989 | US4863583 Electrode structure of an oxygen sensing element | 
| 09/05/1989 | US4863582 Process and apparatus for purifying and concentrating DNA from crude mixtures containing DNA | 
| 09/05/1989 | US4863574 Method of manufacturing a film of polyparaphenylene and applications of the resulting polyparaphenylene film | 
| 09/05/1989 | US4863491 Interface for liquid chromatography-mass spectrometry systems | 
| 09/05/1989 | US4863039 Apparatus and method for handling a flexible disk for testing | 
| 09/04/1989 | EP0281555A4 Composite electrodes for use in solid electrolyte devices. | 
| 08/31/1989 | DE3820405A1 Measured value transmitter device | 
| 08/30/1989 | EP0330460A2 Polyacrylamide gels for improved detection of proteins | 
| 08/30/1989 | EP0330377A2 A moisture-sensing hygrometric element, and a method for its manufacture | 
| 08/30/1989 | EP0330249A2 Solid-state sensor for determining the concentration of hydrogen with a solid-state reference electrode and method for producing such a sensor | 
| 08/30/1989 | EP0330248A2 Solid-state sensor for determining the concentration of a gas | 
| 08/30/1989 | EP0330120A2 Fluorescence detection type electrophoresis apparatus | 
| 08/30/1989 | EP0329894A2 Low resistance fuel electrodes | 
| 08/30/1989 | EP0329781A1 Magnetic bridge devices | 
| 08/30/1989 | CN2043757U 裂纹监测器 Crack Monitor | 
| 08/30/1989 | CN1035207A Sensitive element of combustible gas | 
| 08/29/1989 | US4862146 Detection apparatus | 
| 08/29/1989 | US4862092 Apparatus and method for in vitro detection of abnormal tissues | 
| 08/29/1989 | US4862088 Remote locating of a structure and remote measurement of conditions therein | 
| 08/29/1989 | US4862066 Electrical conductors separated by porous stretched polytetra-fluoroethylene containing carbon particles; durability | 
| 08/29/1989 | US4862065 On-line web internal resistivity measuring apparatus | 
| 08/29/1989 | US4862062 Glass container inspection machine | 
| 08/29/1989 | US4862060 Microwave apparatus for measuring fluid mixtures | 
| 08/29/1989 | US4861557 Combustible gas detector through use of reaction control block | 
| 08/29/1989 | US4861456 Electrochemical device | 
| 08/29/1989 | US4861455 Electrode membrane | 
| 08/29/1989 | US4861454 Oxygen sensor | 
| 08/29/1989 | US4861453 Corrosion detecting probe for steel buried in concrete | 
| 08/29/1989 | US4861448 Electrophoretic methods employing gel inserts | 
| 08/29/1989 | US4861411 Slots for loading samples | 
| 08/29/1989 | US4861167 Line-heat-source thermal conductivity measuring system | 
| 08/29/1989 | US4860712 Method of controlling an oxygen concentration sensor | 
| 08/29/1989 | US4860603 Convection cooling probe mounting jacket | 
| 08/29/1989 | US4860584 Composite moisture sensing apparatus and method | 
| 08/29/1989 | US4860574 Paramagnetic oxygen analyzer | 
| 08/24/1989 | WO1989007758A1 Reference electrode | 
| 08/24/1989 | WO1989007755A1 Method and system for measuring the corrosion properties of specimens | 
| 08/24/1989 | DE3804486A1 Transformation element for an arrangement to measure the concentrations in gas and material mixtures by using sensor elements with non-linear characteristic curves | 
| 08/23/1989 | EP0329458A2 Method and apparatus for the measurement of analyte substances | 
| 08/23/1989 | EP0329436A2 Moisture and dew-detection sensor | 
| 08/23/1989 | EP0329341A2 Capillary electrophoresis | 
| 08/23/1989 | EP0329322A2 Sensing of vapours | 
| 08/23/1989 | EP0328640A1 Combustible gas sensor | 
| 08/23/1989 | EP0328579A1 High resolution electrophoretic gel and method for separating serum proteins | 
| 08/23/1989 | CN2043361U Mineral thermoelectric potential measuring device |