| Patents for G01R 35 - Testing or calibrating of apparatus covered by the other groups of this subclass (8,105) |
|---|
| 09/29/1994 | DE4404046A1 Method for calibrating a network analyser having two measuring ports |
| 09/27/1994 | US5351009 Method for calibrating components permitting the use of low cost components |
| 09/14/1994 | EP0505391B1 Comb generator, device and process for the calibration of radiated-emission test sites |
| 09/13/1994 | US5347476 Instrumentation system with multiple sensor modules |
| 09/07/1994 | EP0541573B1 Measurement value sensor |
| 09/07/1994 | CN1091834A Compensation method for increasing metering precision of electronic watt-hour meter |
| 08/03/1994 | CA2088657A1 Digital compensating calibrator |
| 07/26/1994 | US5332974 Network analyzer performance verification |
| 07/13/1994 | CN2171875Y Folding meter hanging frame for test electric energy meter |
| 07/06/1994 | EP0604492A1 Apparatus and method for calibrating power meters |
| 06/28/1994 | US5325048 Method and apparatus for calibrating a digital electric engergy consumption meter |
| 06/16/1994 | DE4332273A1 Calibrating network analyser, e.g. for MMIC |
| 06/09/1994 | WO1994012940A1 Instrumentation system with multiple sensor modules |
| 06/09/1994 | CA2149632A1 Instrumentation system with multiple sensor modules |
| 06/07/1994 | US5319370 Analog-to-digital converter with a continuously calibrated voltage reference |
| 06/01/1994 | EP0552300A4 Spectral data measurement and correction |
| 05/25/1994 | CN2166465Y Voltage shield device function tester for insulating-resistnce meter |
| 05/25/1994 | CN2166464Y Integral high-pressure loss factor standard device |
| 05/17/1994 | US5313166 Method of calibrating a network analyzer |
| 05/10/1994 | US5311125 Magnetic property characterization system employing a single sensing coil arrangement to measure AC susceptibility and DC moment of a sample |
| 04/20/1994 | EP0592878A2 Method and device for inspecting probe cards for testing integrated circuits |
| 04/19/1994 | US5304919 Electronic constant current and current pulse signal generator for nuclear instrumentation testing |
| 04/05/1994 | US5301140 Microcomputer that detects whether the output of an analog to digital convertor is increasing or decreasing overtime |
| 04/05/1994 | US5301121 Measuring electrical parameters of power line operation, using a digital computer |
| 03/31/1994 | WO1994007155A1 Process for testing an electronic electricity meter |
| 03/30/1994 | EP0589518A1 Appliance for hyperfrequent calibration |
| 03/22/1994 | US5297016 Polyphase emulator for single phase circuit |
| 03/08/1994 | US5293295 Digital protective relay apparatus |
| 03/03/1994 | DE4229681A1 Test circuit for determining transfer characteristics of ring-core current converter for pressurised-gas isolated, metal encapsulated high voltage switches - contains tubular housing section closed off by measurement lead-throughs for coaxial cable, and simulates supply and load cables by coaxial cable |
| 03/01/1994 | US5291124 Tester for high voltage measuring apparatus |
| 02/17/1994 | WO1994003818A1 High speed power analyzer |
| 02/15/1994 | US5287294 Apparatus and method for automatically calibrating for temperature an input tray of an integrated circuit handler |
| 02/15/1994 | US5287063 Calibration circuit and method for maximum and minimum value detection apparatus |
| 01/05/1994 | EP0390886B1 Setting up of quadrature signals |
| 01/05/1994 | CN2152218Y Microcomputer calibrating interface board for electric metre |
| 12/21/1993 | US5272449 Vertical amplifier system for multitrace oscilloscope and method for calibrating the same |
| 12/14/1993 | US5270958 Method and apparatus for automatic return from test mode |
| 12/07/1993 | US5268633 Testing operation of electric energy meter optics system |
| 11/30/1993 | US5266938 Method for calibrating a display and apparatus for implementing the same method |
| 11/24/1993 | CN2147549Y Intelligent electric power meter correcting gauge |
| 11/23/1993 | US5264786 Electrical device for measuring electrical parameters |
| 11/18/1993 | EP0569740A1 Method for automatic calibration of electricity meters and apparatus therefor |
| 11/16/1993 | US5262716 Tester calibration procedure which includes fixturing |
| 11/10/1993 | EP0568889A2 Process for calibrating a network analyser |
| 11/04/1993 | DE4313705A1 Network analyser calibration using calibration standards for two-gate e.g. horn antenna network - performing first measurement of transmission and reflection characteristics with reflection-free strip line between network gates and performing three further calibrations using disturbances e.g. capacitance in line. |
| 10/27/1993 | EP0566823A2 Tester calibration procedure which includes fixturing |
| 10/26/1993 | US5256964 Tester calibration verification device |
| 10/06/1993 | EP0563676A2 Calibrating method for the transmitting and measuring circuit of a test appliance |
| 10/06/1993 | EP0220233B1 Target keys for wafer probe alignment |
| 09/30/1993 | WO1993019381A1 Method and apparatus for measuring ac susceptibility and dc magnetization of a sample |
| 09/29/1993 | EP0479918A4 Method and apparatus for photoinductive imaging |
| 09/28/1993 | US5248933 Calibration |
| 09/22/1993 | CN1076545A High stability multi-nominal value standard inducer |
| 09/22/1993 | CN1076526A Method and apparatus for electronic meter testing |
| 09/22/1993 | CN1022203C Electric quantity transducer and check meter of watt-hour meter |
| 09/15/1993 | EP0560148A1 Clamp-on current measuring probe and method of calibration of this probe |
| 09/14/1993 | US5245630 Equalized eye pattern instrument |
| 09/02/1993 | WO1993017345A1 Method and apparatus for electronic meter testing |
| 08/18/1993 | CN2140529Y Multifunction portable d.c. potential difference meter |
| 08/04/1993 | CN2139701Y Check instrument for watt-hour meter |
| 07/28/1993 | EP0552300A1 Spectral data measurement and correction |
| 07/28/1993 | EP0552291A1 Method of estimating property and/or composition data of a test sample |
| 07/06/1993 | US5225775 Ic testing device for permitting adjustment of timing of a test signal |
| 06/29/1993 | US5223768 Data display apparatus with function for correcting effect of external magnetic field |
| 06/23/1993 | EP0292515B1 A high speed sampling apparatus and method for calibrating the same |
| 06/23/1993 | CN1021376C Adjustment circuit and method for solid-state electricity meter |
| 06/22/1993 | CA1319396C Redundant pulse monitoring in electric energy metering system |
| 06/09/1993 | CN2135787Y Phase-locking frequency voltage converting type correcting source |
| 06/03/1993 | DE4240529A1 Superconducting magnetometer, e.g. for measuring earth's magnetic field from aircraft - has several SQUIDs at defined angles, and computes field from results of measurements in constant field state and in use |
| 05/25/1993 | US5214509 Display device testing circuit using false video signal generator |
| 05/05/1993 | CN2132193Y Electronic type parity checker for mutual-inductor |
| 04/20/1993 | US5204614 Broad-band microwave power sensor using diodes above their resonant frequency |
| 04/15/1993 | DE4133426A1 Capacitive sensor circuit providing measurement and function test - has dual mode operation with bridge measurement and separate test voltage for checking functional performance via reference capacitor |
| 04/14/1993 | CN2129934Y Relay protective test device |
| 04/01/1993 | WO1993006499A1 Improvements relating to the calibration of power meters |
| 03/02/1993 | US5191296 Signal conditioning circuit |
| 02/17/1993 | EP0527617A2 Broad-band microwave power sensor using diodes above their resonant frequency |
| 02/03/1993 | EP0525428A1 Digital protective relay apparatus |
| 02/02/1993 | US5184066 Method and apparatus for disabling all operations of an electronic instrument except for an automatic test procedure |
| 02/02/1993 | US5184062 Dynamically calibrated trigger for oscilloscopes |
| 01/28/1993 | DE4124474A1 Single phase electricity meter testing circuit - connects meters together with some negative and positive current at low levels with voltage supplies differing only in polarity |
| 01/28/1993 | DE4124473A1 Controlled auxiliary power supply for electricity meter testing - supplies intrinsic meter voltage path loads avoiding reduction in measurement accuracy |
| 01/19/1993 | US5180973 Self-calibrating crt measuring instrument |
| 12/29/1992 | US5175492 Calibration and error correction for electrical-source-to-e/o-device impedance mismatch and o/e-device-to-electrical-receiver impedance mismatch in a lightwave component analyzer |
| 12/15/1992 | US5172064 Calibration system for determining the accuracy of phase modulation and amplitude modulation noise measurement apparatus |
| 11/25/1992 | CN1066508A Intelligence testing device of watthour meter |
| 11/19/1992 | EP0366651B1 Calibration system for blood pressure transducer |
| 11/19/1992 | DE4115604A1 Multiple testing circuitry for electricity meters - compares readings of one or more meters under test with known test performance, current and voltage paths being galvanically connected |
| 11/18/1992 | CN2122396U Metering monitor for high voltage power |
| 11/18/1992 | CN1019147B Method of and circuit for ohmmeter calibration |
| 11/12/1992 | DE4115405A1 Simultaneous testing circuitry for electricity meters - employs frequency discrimination and separate phase supplies to enable current and voltage circuits to be commoned |
| 11/04/1992 | CN2121035U Test wiring device for electric property |
| 11/04/1992 | CN2121034U Automatic intelligence (compare) test instrument for standard cell |
| 10/21/1992 | CN2119667U Universal testing controller for computer |
| 10/21/1992 | CN1018767B Voltage mutual inductor serial addition circuit |
| 10/14/1992 | EP0508655A2 Equalized eye pattern instrument |
| 10/07/1992 | CN1018588B Method of updating scale factor of apparatus for measuring alternating electric current by means of faraday effect |
| 09/30/1992 | EP0506602A2 Device and method for GFCI time response and ground test |
| 09/30/1992 | EP0505391A1 Comb generator, device and process for the calibration of radiated-emission test sites. |
| 09/29/1992 | US5151866 High speed power analyzer |