| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 06/26/1991 | CN2079751U Inserting direct reading type moisture detector for cereal |
| 06/26/1991 | CN2079750U Probe by resistance differential method for carbon potential |
| 06/26/1991 | CN1052548A Swept frequency eddy current for measuring coating thickness |
| 06/25/1991 | US5027077 Humidity measuring apparatus |
| 06/25/1991 | US5027076 Open cage density sensor |
| 06/25/1991 | US5027065 Particle sensor plug with wireless casing connection |
| 06/25/1991 | US5027018 High voltage electrophoresis apparatus |
| 06/25/1991 | US5026601 Zirconia-base sintered bodies having coating films |
| 06/25/1991 | US5025767 Air/fuel ratio control system for internal combustion engine and air/fuel ratio controlling oxygen density sensor |
| 06/25/1991 | US5025653 Gas detection system |
| 06/23/1991 | CA2032887A1 Process and apparatus for treating electrophoresis carriers |
| 06/21/1991 | CA2032021A1 Apparatus and method for determining identification and concentration of an atmospheric component |
| 06/20/1991 | DE4006908C1 Ion-sensitive sensor for humidity measurement - comprises semiconductor substrate with oxide layer etched to provide window for insulated charge storage zones |
| 06/20/1991 | DE3941837A1 Widerstandsmessfuehler zur erfassung von gaszusammensetzungen und verfahren zu seiner herstellung Resistance probe for detecting gas compositions and process for its preparation |
| 06/19/1991 | EP0433261A1 Solid state pH sensor |
| 06/19/1991 | EP0432962A2 Flammable gas detection |
| 06/19/1991 | EP0432840A2 Solid-state sensor for the determination of the concentration of gases which can react with hydrogen |
| 06/19/1991 | EP0432757A2 Planar oxygen sensor |
| 06/19/1991 | EP0432649A1 A method for sensing nitrous oxide |
| 06/19/1991 | EP0432188A1 Improvements in sensitivity and selectivity of ion channel membrane biosensors. |
| 06/19/1991 | CN1052374A Na ion concentration detector |
| 06/19/1991 | CA2030394A1 Calibrated physical parameter value measurement system |
| 06/18/1991 | US5025220 Continuous measurement of the absolute conductivity of a liquid |
| 06/18/1991 | US5025219 Apparatus and method continuous measurement of the electrical conductivity of liquid media in a dynamic cell |
| 06/18/1991 | US5025215 Support equipment for a combination eddy current and ultrasonic testing probe for inspection of steam generator tubing |
| 06/18/1991 | US5025153 Scanning tunneling spectroscope and a spectroscopic information detection method |
| 06/18/1991 | US5024951 Method of calibrating a sheet type electrode |
| 06/18/1991 | US5024905 Platinum alloy electrocatalyst |
| 06/18/1991 | US5024749 Ion exchange resin separators |
| 06/18/1991 | CA1284933C Testing polyelectrolytes |
| 06/16/1991 | WO1991009373A1 Biosensing instrument and method |
| 06/16/1991 | WO1991009316A1 Biosensor electrode excitation circuit |
| 06/16/1991 | WO1991009139A1 Redox mediator reagent and biosensor |
| 06/15/1991 | CA2030352A1 Solid state ph sensor |
| 06/15/1991 | CA2021600A1 Swept frequency eddy current system for measuring coating thickness |
| 06/14/1991 | CA2031325A1 Flammable gas detection |
| 06/13/1991 | WO1991009305A1 Method for detecting and measuring cracks in metal lattice structures |
| 06/13/1991 | WO1991008476A1 Apparatus and method for inspecting linear elements |
| 06/13/1991 | WO1991008475A1 Method and device for the rapid electroanalysis of biological liquids and applications in the biological field |
| 06/13/1991 | WO1991008474A1 Improvements in and relating to microelectrodes and amperometric assays |
| 06/13/1991 | WO1991008472A1 Process and apparatus for simultaneous measurement of sulfur and non-sulfur containing compounds |
| 06/13/1991 | WO1991008466A1 Selective detection of vapors |
| 06/13/1991 | WO1991008450A1 Liquid level and composition sensor and method |
| 06/13/1991 | WO1991008284A1 Dielectrophoretic characterisation of microorganisms and other particles |
| 06/13/1991 | DE4104608A1 Compound membrane body esp. for electrochemical sensor - has two different membrane types clamped with different tensions with sealing ring between them |
| 06/13/1991 | DE3940948A1 Continuous electrolyte delivery method for reference electrode system |
| 06/13/1991 | DE3940032A1 Water content measuring appts. for vehicle braking fluid - has capacitive sensor using brake fluid as dielectric and negative temp. coefficient compensation resistor |
| 06/13/1991 | CA2071495A1 Method for detecting and measuring cracks in metal lattice structures |
| 06/13/1991 | CA2031842A1 Method for sensing nitrous oxide |
| 06/12/1991 | WO1991009304A1 Enzyme electrical sensor electrode and method of making it |
| 06/12/1991 | EP0431910A1 Detection of chemicals |
| 06/12/1991 | EP0431565A2 Ionizable substance detector |
| 06/12/1991 | EP0431245A2 Windshield wiper control arrangement |
| 06/12/1991 | EP0390860A4 Medical devices fabricated from homopolymers and copolymers having recurring carbonate units |
| 06/12/1991 | EP0235153B1 Method for biochemical assay |
| 06/12/1991 | CN2078881U Radon detector with an electret |
| 06/12/1991 | CN2078880U Rapid moisture teller for grain and oil |
| 06/12/1991 | CN1052191A Automatic test system of milk purity |
| 06/11/1991 | US5023784 Reducing aluminum in the blood |
| 06/11/1991 | US5023560 Device for moisture measurement of particulate material |
| 06/11/1991 | US5023550 Rotating head mechanism of rotary type AC magnetic flux leakage flaw detector |
| 06/11/1991 | US5023549 Eddy current probe with sensor supporting expandable elastic membrane for inspecting hollow cylindrical structures |
| 06/11/1991 | US5023374 For strips or membranes used in determinations of lithium ion concentration in fluids |
| 06/11/1991 | US5023186 Blood gas/electrolytes calibrator and methods of making and using the same |
| 06/11/1991 | US5023133 Partially protonated polyaniline; for determining acidity of motor vehicle lubrication oil |
| 06/11/1991 | US5022980 System for determining concentration of an electrolyte |
| 06/11/1991 | US5022972 Process for measuring and determining zeta-potential in a laminarly flowing medium for practical purposes |
| 06/11/1991 | US5022969 Process for encasing an electronic component |
| 06/09/1991 | WO1991009307A1 Explosive detection screening system |
| 06/06/1991 | DE4038112A1 Liquids identifying appts. esp. for low viscosity liquid separator - generates different audio tone for each liquid according to values measured at immersed surfaces |
| 06/05/1991 | EP0430901A2 Device for electrochemical measurements in real time of chemical and physical parameters in a moist gaseous atmosphere |
| 06/05/1991 | EP0429772A2 Method of preparing an electrophoresis capillary with agarose |
| 06/05/1991 | CN1012755B Apparatus for the automatic determination of charateristic magnitudes of textile material to be tested |
| 06/04/1991 | US5021765 Security system having detector means sensitive to the proximity of at least one detected object |
| 06/04/1991 | US5021738 Field variable, electronically controlled, nested coil eddy current probe |
| 06/04/1991 | US5021654 All ceramic ion mobility spectrometer cell |
| 06/04/1991 | US5021646 Remote optical path for capillary electrophoresis instrument |
| 06/04/1991 | US5021304 Modified cermet fuel electrodes for solid oxide electrochemical cells |
| 06/04/1991 | US5021140 Ion-selective electrode |
| 06/04/1991 | US5021137 Ceramic solid electrolyte based electrochemical oxygen concentrator cell |
| 06/04/1991 | US5020376 Microenvironmental sensors |
| 06/04/1991 | CA1284675C Ion-selective electrode having a non-metal sensing element |
| 06/02/1991 | WO1991008477A2 Apparatus for automatically and non-destructively determining the class of standardized mechanical properties of a sample of hygroscopic material |
| 06/02/1991 | CA2045462A1 Apparatus for automatically and non-destructively determining the class of standardized mechanical properties of a sample of hygroscopic material |
| 05/30/1991 | WO1991007667A1 Fluidics head for testing chemical and ionic sensors |
| 05/30/1991 | WO1991007659A1 Gas sensors and compounds suitable therefor |
| 05/30/1991 | WO1991007658A1 Gas sensors and compounds suitable therefor |
| 05/30/1991 | WO1991007656A1 Rotary head for scanning metal to be tested |
| 05/30/1991 | WO1991007507A1 4,7-dichlorofluorescein dyes as molecular probes |
| 05/29/1991 | EP0429396A2 Apparatus for detecting gaseous constituents within the inner space of packages |
| 05/29/1991 | EP0429145A2 Ion selective electrode |
| 05/29/1991 | DE3938823A1 Control device for baking - in which baking is stopped when residual moisture content of item being baked falls to specific predetermined level |
| 05/29/1991 | CN2078002U Probing unit of detection equipment for measuring combustive/explosible gas content |
| 05/29/1991 | CN2078001U Boiler water mole-ratio monitoring instrument |
| 05/29/1991 | CN2078000U Coal smoke detecting device |
| 05/29/1991 | CN1012706B Machine implemented analysis eddy current date |
| 05/28/1991 | US5019885 Gas detecting device |
| 05/28/1991 | US5019781 Source level control for impedance meter |
| 05/28/1991 | US5019777 Eddy current testing program with scanning probe head having parallel and normal sensing coils |
| 05/28/1991 | US5019775 Calibrating an eddy-current-probe using a modulated thermal energy source |