| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
|---|
| 05/19/1993 | EP0541778A1 Apparatus and methods for measuring the dielectric and geometric properties of materials |
| 05/19/1993 | CN1020804C Dielectric loss measurer by optical fibre and microcomputer |
| 05/19/1993 | CN1020801C Apparatus for accurately measuring the relative conductivity of sea water and the absolute conductivity of solutions |
| 05/18/1993 | US5212454 Method and apparatus for selecting and measuring a capacitance from a plurality of interconnected capacitances |
| 05/18/1993 | US5212453 Pulse echo method and apparatus for measuring the moisture content of materials |
| 05/18/1993 | US5212452 For positioning against a moving film material |
| 05/18/1993 | US5212018 Titanium, platinum black |
| 05/18/1993 | US5211477 For testing properties of materials |
| 05/12/1993 | EP0541455A1 Method of converting impedance ratios applicable particularly for industrial pressure transmitters |
| 05/11/1993 | US5210501 Apparatus for processing sensor signals having switch-capacitor structures |
| 05/11/1993 | US5210500 Process for contactless measurement of the electrical resistance of a test material |
| 05/06/1993 | DE4135555A1 Scattering parameter determination of nonlinear HF power amplifier - determining forward and backward wave components of wavelength-selective directional coupler at output of tested circuit |
| 05/05/1993 | CN2132189Y Multifunction test pencil for leakproof protector |
| 05/04/1993 | US5208544 Noninvasive dielectric sensor and technique for measuring polymer properties |
| 05/04/1993 | CA1317378C Analog to digital conversion by measuring the ratio of rc time constants |
| 04/29/1993 | WO1993008479A1 Method and apparatus for capacitance temperature compensation and manufacturability in a dual plate capacitive pressure transmitter |
| 04/29/1993 | WO1993008477A1 SELF DIAGNOSTIC pH SENSOR |
| 04/29/1993 | DE4135046A1 Coated electrode for sensor for detection of dielectric properties - is used with fluid, gas-form and/or pourable media and comprises outer and inner conductors forming capacitor enclosed in e.g. dielectric plastic layer |
| 04/29/1993 | CA2119437A1 Method and apparatus for capacitance temperature compensation and manufacturability in a dual plate capacitive pressure transmitter |
| 04/27/1993 | US5206600 Impedance determining apparatus using quadrature current and peak detectors |
| 04/27/1993 | US5206599 Capacitance sensor for measuring thickness of blown film including a collapsing frame and a pair of linear motor assemblies |
| 04/27/1993 | US5206588 Apparatus and process for the non-destructive measurement of the ohmic resistance of a thin layer using eddy currents |
| 04/27/1993 | US5205151 Alcohol concentration sensor testing apparatus |
| 04/27/1993 | CA1316711C Liquid level control system for refrigeration apparatus |
| 04/21/1993 | CN2130265Y Load storage energy electronic electricity test pen |
| 04/21/1993 | CN1071258A Method for measuring inductance of d.c motor rotor loop or plane-wave reactor |
| 04/15/1993 | WO1993007444A1 Apparatus and method for determining the linear position of a hydraulic cylinder |
| 04/13/1993 | US5202640 Capacitance and leakage test method and apparatus |
| 04/13/1993 | CA1316213C Micro ohmmeter |
| 04/08/1993 | DE4132562A1 In-situ determn. of thin electrically conductive films resistance - includes elimination of distorting plasma effects |
| 04/07/1993 | CN2129419Y Pocket numerical megohmmeter with automatic range-measuring |
| 04/01/1993 | WO1993006494A1 Rotatable capacitance sensor |
| 03/31/1993 | EP0303615B1 Measurement circuit |
| 03/31/1993 | CN1070486A DC grounding monitor alarm device |
| 03/30/1993 | US5198777 Paper thickness detecting apparatus having a resonator with a resonance point set by a capacitance detecting unit |
| 03/24/1993 | EP0532616A1 Electronic circuitry for detecting leakage of chemical substance. |
| 03/24/1993 | EP0532521A1 Process for testing devices. |
| 03/23/1993 | US5196799 Method and apparatus for testing a protective barrier material for pinholes and tear strength |
| 03/17/1993 | EP0531323A1 Method and system for concurrent electronic component testing and lead verification |
| 03/17/1993 | CN2128386Y Digital impedance parameter measurer |
| 03/16/1993 | US5194819 Linearized capacitance sensor system |
| 03/11/1993 | DE4230313A1 Dielectric constant measuring appts. for liquid fuel testing - measures phase difference on both ends of resistor subjected to h.f. signal, and regulates phase to provide output signal representing dielectric constant |
| 03/10/1993 | EP0303595B1 Linear position sensor |
| 03/09/1993 | US5192952 Method and apparatus for transmitting electromagnetic signals into the earth from a capacitor |
| 03/03/1993 | EP0528924A1 Method and apparatus for bleaching textile webs. |
| 02/25/1993 | DE4128395A1 Determining loss factor esp. for analysing aging condition of HV insulation - deriving difference between low voltages across diagonal of capacitive bridge and forming min. product with voltage across reference capacitor |
| 02/24/1993 | EP0528784A1 Method for the determination of a measurable quantity |
| 02/23/1993 | US5189376 Method for the measurment of capacitance, with application to linear measurement of distance |
| 02/23/1993 | US5189375 Inductive cable resistance tester |
| 02/23/1993 | US5189366 Method and apparatus using a varying electromagnetic field for determining the nature, or a property of a non-metallic material |
| 02/23/1993 | US5189322 Low-power sense amplifier with feedback |
| 02/18/1993 | WO1993003386A1 Process for measuring and evaluating the inductance of a relay |
| 02/18/1993 | WO1992005980A3 Method and apparatus for testing a dual airbag passive restraint system |
| 02/18/1993 | DE4126091A1 Container filling limit conductive measurement |
| 02/17/1993 | EP0312586B1 Spurious resonance control for nmr observe coils |
| 02/16/1993 | US5187465 Method and apparatus for testing a dual airbag passive restraint system |
| 02/16/1993 | US5187443 Microwave test fixtures for determining the dielectric properties of a material |
| 02/11/1993 | DE4126534A1 Verfahren zur messung und wertung der induktivitaet eines relais Method for measurement and evaluation of the inductance of a relay |
| 02/11/1993 | DE4125882A1 Measuring subscriber line parameters of telephone network - applying pulsed voltages in various connection wire-configurations, cross-correlated to preliminary measurement values |
| 02/07/1993 | WO1993003354A1 Conductivity measuring cell |
| 02/03/1993 | EP0525732A1 Method and apparatus to check the state of wear in a covering fabric of a driving belt |
| 02/02/1993 | US5184077 Abrasion-resistant, high pressure dielectric sensors |
| 01/28/1993 | DE4124596A1 Measuring insulation resistance of telecommunication cable - determining differences between measurements from voltage applied with alternating polarity |
| 01/27/1993 | EP0524166A1 Process and device for determining the electrical conductivity of a test specimen made of superconducting material. |
| 01/26/1993 | US5182513 Method and apparatus for a multi-channel multi-frequency data acquisition system for nondestructive eddy current inspection testing |
| 01/21/1993 | WO1993001503A1 Method and device for extending the dynamic range in measurements carried out with a directional coupler |
| 01/20/1993 | EP0524086A1 Method for measuring a resistance by evaluating charging times of a capacitor |
| 01/20/1993 | EP0523795A1 Iron with humidity sensor |
| 01/14/1993 | DE4121184A1 Wideband measuring system for network analysis |
| 01/12/1993 | US5179345 Method and apparatus for analog testing |
| 01/12/1993 | US5179342 Superconductor quench measuring device which evaluates reflected pulses |
| 01/09/1993 | WO1993001482A1 Capacitance measuring circuit and method for liquid leak detection |
| 01/09/1993 | CA2089873A1 Capacitance measuring circuit and method for liquid leak detection |
| 01/07/1993 | WO1993000591A1 Measuring dielectric properties of materials |
| 01/07/1993 | EP0521234A2 Computerized remote resistance measurement system with fault detection |
| 01/07/1993 | EP0521176A1 Circuit for temperature compensation of coil quality factor |
| 01/07/1993 | EP0521175A1 Circuit arrangement for temperature compensation of coil quality factor |
| 01/05/1993 | US5177447 Automated breakout box for automotive testing |
| 01/05/1993 | US5177445 Method and apparatus for detecting and locating a selected non-metallic material in a detection region |
| 12/30/1992 | EP0520661A1 Vehicle detector with series resonant oscillator drive |
| 12/30/1992 | EP0520352A2 Capacitive sensing device |
| 12/23/1992 | WO1992022824A1 Method and apparatus for transmitting electromagnetic signals into the earth from a capacitor |
| 12/23/1992 | CN2125807U Digital automatic range changeable auget resistance tester |
| 12/23/1992 | CN1019601B Grid displacement sensor of capacity type |
| 12/22/1992 | CA1311798C Method and apparatus for testing an airbag restraint system |
| 12/18/1992 | CA2068896A1 Vehicle detector with series resonant oscillator drive |
| 12/17/1992 | DE4135991C1 Capacitance-frequency converter producing rectangular pulse train signal - has two changeover switches connected to respective plates of capacitor for connection to different potentials |
| 12/17/1992 | DE4135990C1 Capacitance-frequency converter with offset compensation - has third changeover switch connected to compensating capacitor for switching to different potentials |
| 12/17/1992 | DE4119244A1 Capacitive sensor arrangement for measuring tool workpiece separation - contains sensor head with several electrodes on single or parallel, straight or circular lines |
| 12/17/1992 | DE4119052A1 Throughput measurement cell for liquid electrolyte conductivity measurement, e.g. in sea water - has central measurement section consisting of joint between wider and narrower tube with pick=up and field electrodes |
| 12/16/1992 | EP0518785A1 Device for checking and measuring the insulation of a power line having an insulated neutral conductor |
| 12/16/1992 | CN2125149U Portable wide measuring range digital megohmmeter |
| 12/16/1992 | CN2125148U Electronic insulating monitor |
| 12/15/1992 | US5172066 Method for determining the end of useful life of a gas purifier and apparatus therefore |
| 12/10/1992 | WO1992021982A1 A method and a system for testing capacitive acoustic transducers |
| 12/09/1992 | EP0517267A2 Electric conductivity-measuring cell |
| 12/09/1992 | EP0217965B1 Display for reflection characteristics of complex transmission |
| 12/09/1992 | EP0173833B1 Circuit and process to measure and to digitize a resistor |
| 12/08/1992 | US5168714 Assembly, especially for a beverage-vending machine, with a container for the storage, cooling and carbonating of water |
| 12/02/1992 | EP0516367A2 Method and apparatus for simultaneous differential scanning calorimetry and microdielectrometry |