| Patents for G01R 27 - Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom (22,286) |
|---|
| 05/04/1982 | CA1123057A1 Electrical impedance measuring apparatus for providing separate measurements of the conductivity and dielectric coefficient of various materials |
| 05/04/1982 | CA1123054A1 Apparatus and method for providing separate conductivity, dielectric coefficient and moisture measurements of particulate material |
| 04/27/1982 | US4327323 Comparator apparatus and process |
| 04/20/1982 | CA1122276A1 Portable digital ohmmeter |
| 04/13/1982 | US4325040 Apparatus for automatic adjustment of an inductor in a tuned circuit |
| 04/07/1982 | EP0048862A1 Method of measuring resistances and capacities of electronic components |
| 04/06/1982 | US4323972 Ohm meter with automatic lead resistance compensation |
| 03/30/1982 | US4322727 Inductive transducer responsive to displacement along a path |
| 03/30/1982 | US4322710 Electrical resistors |
| 03/30/1982 | US4322681 Module for analyzing and linearizing of electrical signals from unknown systems and method for using it |
| 03/30/1982 | US4322678 Identification of materials using their complex dielectric response |
| 03/30/1982 | US4321932 Electrode impedance monitoring method apparatus for electrocardiography |
| 03/30/1982 | CA1121019A1 Method and system for detection of thin metal layers in packaged articles |
| 03/24/1982 | EP0047900A1 Method and apparatus for determining the rotor resistance in an asynchronous electric machine |
| 03/23/1982 | US4321527 Apparatus and method for individually testing combined active elements |
| 03/16/1982 | US4320338 Methods of and apparatus for determining the capacitance of a transmission line by integrating line currents |
| 03/09/1982 | US4319185 Delay line microwave moisture measuring apparatus |
| 03/02/1982 | CA1119256A1 Device for monitoring the performance of a transmitter |
| 03/02/1982 | CA1119253A1 Capacitive pick-off circuit |
| 03/02/1982 | CA1119252A1 Capacitive pick-off circuit |
| 02/23/1982 | US4317116 Arrangement for the generation of a signal in proportion to a capacity |
| 02/17/1982 | EP0046024A1 Earth leakage current breaker |
| 02/16/1982 | US4316187 Current rating verification system |
| 02/09/1982 | US4315116 Switch assembly with leakage current detecting means |
| 02/03/1982 | EP0045113A1 Process and device for locating a ground fault |
| 02/03/1982 | EP0045074A1 Apparatus for measuring the contact resistance of electrolytically applied surface films |
| 01/26/1982 | US4313087 Apparatus for detecting electrically conductive coatings on documents |
| 01/19/1982 | US4311959 Capacitive measuring sensor |
| 01/19/1982 | US4311957 Measurement of moisture content |
| 01/19/1982 | CA1116740A1 Acoustic insulation measurement apparatus |
| 01/12/1982 | US4310794 Capacitive probe detection systems |
| 01/12/1982 | CA1116236A1 Electronic ground detector for armature supplies |
| 01/05/1982 | US4309660 Methods and apparatus for measuring electrical conductivity |
| 12/29/1981 | US4308565 Method and apparatus for fault direction determination |
| 12/24/1981 | WO1981003709A1 Determination of moisture level in materials |
| 12/22/1981 | US4307336 Process and system for the determination of a longitudinal equivalent reactance in an electric power supply line |
| 12/15/1981 | US4306266 Circuit arrangement for determining the reactance of a power transmission line in the event of a short circuit |
| 12/15/1981 | US4306186 Frequency marker display system |
| 12/01/1981 | US4303887 Electrical liquid conductivity measuring system |
| 12/01/1981 | CA1113568A1 Fluid condition monitoring system |
| 11/25/1981 | EP0040453A2 R.F. impedance determination |
| 11/18/1981 | EP0039751A1 Electrical resistance measurement |
| 11/17/1981 | US4301536 Multitone frequency response and envelope delay distortion tests |
| 11/17/1981 | US4301414 Disposable sample card and method of making same |
| 11/17/1981 | US4301412 Liquid conductivity measuring system and sample cards therefor |
| 11/17/1981 | US4301403 Electrical circuit testing |
| 11/17/1981 | US4301401 Dielectric constant detector |
| 11/17/1981 | US4301400 Microwave water in crude monitor |
| 11/17/1981 | US4300574 Device for measuring and indicating changes in resistance of a living body |
| 11/12/1981 | WO1981003226A1 Apparatus and method for image reproduction of materials using their magnetic and electric properties |
| 11/10/1981 | US4300094 Finish measuring method and apparatus |
| 11/10/1981 | US4300093 Device for measuring the amount of rotation of a rotating object |
| 11/10/1981 | US4300092 Phase match measuring system |
| 11/03/1981 | US4298969 Method and apparatus for testing the impedances of geophone channels |
| 11/03/1981 | US4298864 Power line fault detector circuit |
| 11/03/1981 | CA1111912A1 High resistance ground fault detector |
| 10/28/1981 | EP0038400A1 Method and system for monitoring cables for the automatic monitoring of a communication cable network |
| 10/27/1981 | CA1111562A1 Method and device for measuring the slope of the envelope delay characteristic of a transmission channel and their application to the automatic equalizer selection technique |
| 10/21/1981 | EP0038259A1 Process for detecting faults of a phase in an electric energy distribution system |
| 10/20/1981 | US4296371 System for measuring stylus shoe length |
| 10/13/1981 | US4295092 Apparatus for and method of detecting and measuring corrosion damage in pipe |
| 10/13/1981 | US4295091 Circuit for measuring low capacitances |
| 10/13/1981 | US4295090 Electronic selector switch particularly for use in radioscondes |
| 09/15/1981 | US4290010 Method and apparatus for measuring transmission characteristic of a test object |
| 09/15/1981 | US4290009 Standing wave ratio detecting apparatus |
| 09/15/1981 | US4290008 Method and apparatus for discriminatively determining electrical constants |
| 09/09/1981 | EP0035365A2 Method and apparatus for fault detection |
| 09/08/1981 | US4288742 Electrical moisture sensor |
| 09/08/1981 | US4288741 Electrical measurement of fluid void fraction for fluid having capacitive and resistive conductive components |
| 09/01/1981 | US4287470 Digital humidimeter |
| 09/01/1981 | US4287469 Process and circuit arrangement for the measuring of coefficients of message-transmission equipment |
| 08/25/1981 | US4286208 Fluid interface detector |
| 08/19/1981 | EP0033858A1 Circuit arrangement for measuring the electric characteristics of user telephone lines |
| 08/11/1981 | US4283794 Measuring radio-frequency impedance |
| 08/11/1981 | US4283676 Direct reading capacitance meter |
| 08/11/1981 | US4283675 Impedance/admittance measuring circuit |
| 08/11/1981 | CA1106932A1 Electronic wall stud sensor |
| 08/04/1981 | US4282480 Apparatus for humidity detection |
| 07/28/1981 | US4281286 Apparatus and method for detecting wet and icy conditions on the surface of a pathway |
| 07/28/1981 | CA1105997A1 Capacitance sensor |
| 07/21/1981 | US4280124 Corrosion detector |
| 07/14/1981 | US4278933 Means and method for determining susceptibility to radiated energy |
| 07/07/1981 | US4277741 Microwave acoustic spectrometer |
| 07/07/1981 | CA1104373A1 Limb blood flowmeter |
| 06/30/1981 | US4276128 Anodizing, valve metals |
| 06/30/1981 | CA1104210A1 Controlled multidigit resistance box |
| 06/24/1981 | EP0030724A2 Method and device for carrying out objective measurements on digital speech transmission systems |
| 06/24/1981 | EP0030722A2 Thorax impedance measuring device |
| 06/24/1981 | EP0030592A1 A method of locating earth faults on conductors |
| 06/23/1981 | US4275446 Method and apparatus for measurement of attenuation and distortion by a test object |
| 06/23/1981 | US4275348 Method of and system for measuring the transmission characteristics of four-terminal networks |
| 06/23/1981 | US4275345 A.C. Impedance measuring circuit with thermally controlled resistive element |
| 06/17/1981 | EP0030383A1 Method for determining the quantization distortions of a PCM transmission apparatus |
| 06/16/1981 | US4274047 Analyzer for nonlinear networks |
| 06/09/1981 | US4272718 Moisture meter |
| 06/03/1981 | EP0029793A1 Device for the control of a hemodialysis treatment |
| 06/02/1981 | US4271443 Quench detector |
| 06/02/1981 | US4271389 Method and apparatus for physiologic facsimile imaging of biologic targets without multipath contamination using remote microwave interrogation |
| 06/02/1981 | CA1102411A1 Admittance measuring system for monitoring the condition of materials |
| 05/28/1981 | WO1981001470A1 Apparatus and method for detecting wet and icy conditions on the surface of a pathway |