| Patents for G01N 27 - Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means (109,839) |
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| 08/01/1989 | US4853634 Device for crack detection on hot cast billets and suppressing the effects of magnetic regions |
| 08/01/1989 | US4853616 Detection of water saturation in insulation at cased road crossings |
| 08/01/1989 | US4853615 Detection of water saturation in insulation at cased road crossings |
| 08/01/1989 | US4853614 Method and apparatus for measuring moisture content of granular material |
| 08/01/1989 | US4853544 Heat-resistant case for an ionization-type smoke detector and method of making the same |
| 08/01/1989 | US4853539 Glow discharge mass spectrometer |
| 08/01/1989 | US4853091 Method and apparatus for the electrochemical determination of oxygen concentration |
| 08/01/1989 | US4853090 Lithium ion-selective compositions, electrodes and a method of use |
| 08/01/1989 | US4852385 Maintenance device for at least partially automatic cleaning and calibration of a probe containing a measured value transmitter |
| 08/01/1989 | US4852384 Automatic calibration and control system for a combined oxygen and combustibles analyzer |
| 07/27/1989 | WO1989006855A1 Dry ion-selective electrodes for the determination of ionic species in aqueous media |
| 07/27/1989 | WO1989006795A1 Curved surface cassette/gel system |
| 07/26/1989 | EP0325562A2 Dry ion-selective electrodes for the determination of ionic species in aqueous media |
| 07/26/1989 | EP0325050A2 Hygrometer |
| 07/26/1989 | EP0324850A1 Cooled cell for electrophoretic gel |
| 07/26/1989 | EP0177547B1 Method and device for measuring the corrosivity of liquids |
| 07/26/1989 | CN2041817U Clean water antomatic monitor device |
| 07/26/1989 | CN1034272A Six-ring electrode technology for measuring biological dielectric characteristics |
| 07/25/1989 | US4851818 Electronic controller for a water purifying unit |
| 07/25/1989 | US4851774 Suppression of the effect of harmless surface defects in eddy current testing by sensitivity characteristic compensation |
| 07/25/1989 | US4851762 Novel technique using magnetic field dependent phase detection for detection of superconductivity |
| 07/25/1989 | US4851303 Solid compositions for fuel cells, sensors and catalysts |
| 07/25/1989 | US4851105 Electrode deposited on undulated, electrolyte and covered with porous coating; durable and peel resistant; for combustion engines |
| 07/25/1989 | US4851104 Instrument for potentiometric electrochemical measurements |
| 07/25/1989 | US4851103 Moisture measuring device for high temperature gas |
| 07/25/1989 | US4851088 Electrochemical detection of carbon dioxide |
| 07/25/1989 | US4850714 Apparatus for measuring the thermal conductivity of gases |
| 07/25/1989 | US4850386 Soil Moisture monitor |
| 07/25/1989 | US4850105 Method of taking out lead of semiconductor tip part |
| 07/25/1989 | CA1257904A1 Verification of electrical continuity by impedance measurements |
| 07/20/1989 | DE3800640A1 Method of determining the content of a polar solvent in a porous layer |
| 07/19/1989 | EP0324539A2 Improved capillary gel electrophoresis columns |
| 07/19/1989 | EP0324193A1 Method and device for contact-free measuring the conductivity of a medium, using a capacitive coupling |
| 07/18/1989 | US4849798 Field effect transistor type sensor with an auxiliary electrode |
| 07/18/1989 | US4849694 Thickness measurements of thin conductive films |
| 07/18/1989 | US4849693 Automated measurement system employing eddy currents to adjust probe position and determine metal hardness |
| 07/18/1989 | US4849687 Steam quality monitoring means and method |
| 07/18/1989 | US4849628 Atmospheric sampling glow discharge ionization source |
| 07/18/1989 | US4849343 Process for analysis using a lipid membrane |
| 07/18/1989 | US4849330 Photoresponsive redox detection and discrimination |
| 07/18/1989 | US4849180 Alcohol selective gas sensor |
| 07/18/1989 | US4849078 Process for conducting electrophoresis and transfer |
| 07/18/1989 | US4849058 Method of detecting nitrogen oxides in gaseous or liquid samples |
| 07/18/1989 | CA1257700A1 Method and system for controlling craks that might in occur stressed structures |
| 07/18/1989 | CA1257649A1 Measurement of microbial activity using lyophilized bioelectrochemical cell components |
| 07/13/1989 | DE3843297A1 Ionisationsrauchmelder Ionization Smoke Detector |
| 07/13/1989 | DE3842747A1 Verfahren zur bestimmung der konzentration von polyacrylsaeure in einer loesung mit mehrwertigen kationen Method for the determination of the concentration of polyacrylic acid in a spoon with polyvalent cations |
| 07/13/1989 | DE3839508A1 Vorrichtung zum regulierbaren steuern der groesse einer eisbank Apparatus for controlling the controllable groesse an ice bank |
| 07/13/1989 | DE3832562A1 Capacitive sensor device |
| 07/12/1989 | EP0323948A2 Continuous isoelectric separation |
| 07/12/1989 | EP0210990B1 Expandable eddy current probe |
| 07/12/1989 | EP0163728B1 Electrochemical sensing of carbon monoxide |
| 07/12/1989 | CN2041043U Portable lf magnetic flaw detector |
| 07/12/1989 | CN1033879A Electrical viscosimeter |
| 07/11/1989 | US4847598 Water treatment regeneration system incorporating alternating current excitation and paired operational amplifiers with asymmetrical feedback elements |
| 07/11/1989 | US4847594 Sensor for detecting the exhaustion of an adsorbent bed |
| 07/11/1989 | US4847193 Signal amplification in an assay employing a piezoelectric oscillator |
| 07/11/1989 | US4847172 Interlocking metal oxide, ceramic, metal particles and fibers; porous |
| 07/11/1989 | US4846955 Controlled-growth mercury drop electrode |
| 07/11/1989 | US4846950 For dialysis; nontoxic, side effect reduction |
| 07/11/1989 | US4846937 Method of detecting carbon dioxide in a gaseous or liquid sample |
| 07/11/1989 | US4846936 Protective coatings for metals |
| 07/11/1989 | US4846869 Windshields with electrode sensors |
| 07/11/1989 | US4845976 Method and apparatus of determining energy content of a diluted hydrocarbon gas |
| 07/11/1989 | CA1257361A2 Method and apparatus for producing electromagnetic surveillance fields |
| 07/11/1989 | CA1257333A1 Method and apparatus for determining the covering on a road surface |
| 07/11/1989 | CA1257331A1 Sensor having ion-selective electrodes |
| 07/11/1989 | CA1257184A1 Method for determining base sequence of dna or dna fragment utilizing autoradiography |
| 07/06/1989 | DE3743399A1 Sensor for detecting gases by means of exothermic catalytic reactions |
| 07/06/1989 | DE3743398A1 Suspension for a sensor arrangement for detecting gases by means of exothermic catalytic reactions |
| 07/05/1989 | EP0323015A2 A method of making planar oxygen pumping devices |
| 07/05/1989 | EP0322552A2 Apparatus for testing semi-products |
| 07/05/1989 | CN2040645U Grain moisture testing probe with electric inductive method |
| 07/05/1989 | CN1004739B Humidity sensor and the method of making |
| 07/04/1989 | US4845638 Method of eliminating excess nitrite in diazotisation solutions |
| 07/04/1989 | US4845472 Leak sensing alarm and supply shut-off apparatus |
| 07/04/1989 | US4845421 Method and apparatus for measuring the moisture content of a substance |
| 07/04/1989 | US4845360 Counterflow leak detector with high and low sensitivity operating modes |
| 07/04/1989 | US4844788 Wide-range air/fuel ratio sensor and detector using the same |
| 07/04/1989 | US4844787 Packaging bag for sheets for electrophoresis |
| 07/04/1989 | US4844786 Means for electrophoresis |
| 07/04/1989 | US4844782 Aftertreatment, rotation |
| 07/04/1989 | US4844097 Apparatus and method for testing liquids |
| 07/04/1989 | CA1257000A1 Method and apparatus for determining soluble gas content |
| 07/04/1989 | CA1256998A1 Air/fuel ratio detecting apparatus for internal combustion engines |
| 07/04/1989 | CA1256944A1 Capacitive chemical sensor using an ion exchange surface |
| 07/04/1989 | CA1256755A1 Gas-sensitive composite material comprising metal and dielectric and process for producing same |
| 06/29/1989 | WO1989006044A1 Mass spectrometer |
| 06/29/1989 | WO1989005977A1 Chemical sensors employing catalytic antibodies |
| 06/29/1989 | WO1989005664A1 Medical devices fabricated from homopolymers and copolymers having recurring carbonate units |
| 06/29/1989 | WO1989005605A1 Long-life membrane electrode for non-ionic species |
| 06/29/1989 | DE3840901A1 Measuring cell configuration for determining the electrokinetic streaming potential on substrates which are plate-shaped or capable of being coated |
| 06/29/1989 | DE3743216A1 Hochfrequenzschwingkreis High-frequency resonant circuit |
| 06/29/1989 | DE3732324A1 Method of manufacturing new types of measuring probes for ion-selective/material-selective glass electrodes |
| 06/28/1989 | EP0322378A1 Gas sensor |
| 06/28/1989 | EP0322289A1 Process for the continuous analysis of chloride ions present in the head-waters of a distillation column for hydrocarbons, and analysing apparatus for carrying out this process |
| 06/28/1989 | EP0321785A2 Probe for detecting gases by exothermal catalytic reactions |
| 06/28/1989 | EP0321745A2 Photoionization detector for gas chromatography |
| 06/28/1989 | EP0321737A2 Miniaturized reference electrodes |
| 06/28/1989 | EP0321606A1 Cellular amphipatic proteins in aggregated forms, and procedure for the production and purification of these proteins |