| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
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| 03/20/2002 | CN1340758A Method and device for electric power element for video-frequency presentation display equipment |
| 03/20/2002 | CN1081335C Anticreep piece for electric energy meter |
| 03/14/2002 | US20020032535 Energy information management method for use with a circuit breaker |
| 03/07/2002 | WO2002018961A2 Controlling of the temperature of a dut using external current sensors |
| 03/06/2002 | EP1184671A1 Power detector using FET transistor |
| 03/06/2002 | CN2480847Y Main unit for digital effective work power meter |
| 03/06/2002 | CN1339109A Electrical energy meter |
| 02/28/2002 | US20020024357 Power detector using FET transistor |
| 02/28/2002 | US20020024334 Layered current sensor |
| 02/28/2002 | DE10039665A1 Leistungssensor Power sensor |
| 02/26/2002 | US6351737 Measurement apportionment system |
| 02/24/2002 | CA2353429A1 Power detector using fet transistor |
| 02/21/2002 | WO2002015364A1 Remote energy monitoring apparatus and method |
| 02/21/2002 | WO2002014881A1 Method and equipment for power measurement in an alternating-current system |
| 02/21/2002 | WO2002014880A2 Power sensor |
| 02/14/2002 | WO2002012908A2 Electronic power meter with phase and non-linearity compensation |
| 02/13/2002 | CN2476823Y Factory station electric energy quality monitoring and analysing device |
| 02/13/2002 | CN2476822Y DC power measurement device |
| 02/07/2002 | WO2002011349A2 Successive log video pad power detector and method |
| 02/07/2002 | WO2002010776A1 Signal measurement |
| 02/07/2002 | US20020014887 Three-phase electrical power measurement system including three transformers and a measurement circuit to calculate the power thereof |
| 02/07/2002 | CA2417539A1 Successive log video pad power detector and method |
| 02/06/2002 | CN2476030Y High voltage electric energy metering fault recording device |
| 01/31/2002 | US20020013668 Power arithmetic apparatus |
| 01/31/2002 | US20020011832 Primary current conductor configurations for a residential electronic meter |
| 01/24/2002 | WO2001048490A3 System for adaptive radio communication for utility meter |
| 01/24/2002 | US20020010690 Energy information system and sub-measurement board for use therewith |
| 01/24/2002 | US20020008506 Electric power measuring method, system using the same and computer-readable medium |
| 01/15/2002 | US6339702 Output power detection circuit of transmitter |
| 01/09/2002 | CN2470834Y Testing device of short-wave therapeutic machine |
| 01/03/2002 | WO2002001605A2 Energy history buffer |
| 01/03/2002 | CA2415233A1 Energy history buffer |
| 12/25/2001 | CA2137067C System and process for the measurement of the electric energy consumption of a plurality of consumers |
| 12/20/2001 | US20010052859 Electricity meter |
| 12/19/2001 | EP0848825B1 Electricity meter |
| 12/19/2001 | EP0840896B1 Electricity meter |
| 12/18/2001 | US6331769 RMS power sensor with 84 dB dynamic range |
| 12/11/2001 | US6329809 RF power amplifier output power sensor |
| 12/06/2001 | US20010048311 Method and apparatus for measuring true transmitted power using a broadband dual directional coupler |
| 12/05/2001 | EP1160578A1 Method for standardizing a power detector |
| 11/29/2001 | US20010045821 Electricity meter with an additional computing module |
| 11/22/2001 | WO2001088553A2 Solid-state single-phase meter and methods and apparatus for programming such meter |
| 11/22/2001 | US20010043062 Modular sensor array, metering device and mounting and connection base |
| 11/21/2001 | EP1155334A1 Utility meter with display during power interruption |
| 11/20/2001 | US6321341 Method and apparatus for measuring the power consumption of a computer |
| 11/20/2001 | US6321074 Apparatus and method for reducing oscillator frequency pulling during AM modulation |
| 11/15/2001 | WO2001086310A1 Digital meter for measuring alternating current |
| 11/15/2001 | WO2000050906A9 Utility meter with display during power interruption |
| 11/15/2001 | US20010040446 Apparatus and method for the measurement and monitoring of electrical power generation and transmission |
| 11/15/2001 | CA2408056A1 Digital meter for measuring alternating current |
| 11/14/2001 | EP1153304A2 Electrical energy meter |
| 11/07/2001 | CN1321248A Method and apparatus for real time measurement of three phase electrical parameters |
| 10/25/2001 | WO2001080421A2 An accurate power detection circuit for use in a power amplifier |
| 10/25/2001 | WO2001079872A1 Apparatus and method for the measurement and monitoring of electrical power generation and transmission |
| 10/24/2001 | EP0981053B1 Programmable monitoring device for electric consumption |
| 10/24/2001 | CN2456172Y Digital phase-power factor meter |
| 10/23/2001 | US6307364 Power sensor for RF power amplifier |
| 10/18/2001 | WO2001077695A2 Electronic meter having random access memory with passive nonvolatility |
| 10/18/2001 | CA2406380A1 Electronic meter having random access memory with passive nonvolatility |
| 10/10/2001 | EP1141732A1 Utility metering system having waveform capture for power quality monitoring |
| 10/10/2001 | CN1316648A Method for monitoring electric comsumption |
| 10/04/2001 | US20010027449 Instantaneous internet charging |
| 10/02/2001 | US6297708 Temperature compensated high performance oscillator |
| 09/26/2001 | EP1136829A1 Method for measuring the consumption of an element of an electrical network |
| 09/26/2001 | CN2450672Y Power measuring device |
| 09/26/2001 | CN1314596A Electric energy metering controller for oil pumping machine |
| 09/18/2001 | US6291985 Demand-relay-reporting electronic wattmeter without a current transformer sensor |
| 09/18/2001 | US6291984 Dual mode diode power sensor with square law and linear operating regions |
| 09/18/2001 | US6291982 True average wide dynamic range power sensor |
| 09/07/2001 | WO2001065267A1 Method and apparatus for measuring true transmitted power using a broadband dual directional coupler |
| 09/07/2001 | CA2818672A1 System and method for on-line monitoring and billing of power consumption |
| 09/07/2001 | CA2661730A1 System and method for on-line monitoring and billing of power consumption |
| 09/06/2001 | US20010019321 Reduced cost automatic meter reading system and method using locally communicating utility meters |
| 08/30/2001 | WO2001063303A1 Alternating current meter with photoelectric digital counter structure |
| 08/29/2001 | CN2445333Y Ultrasonic consumption power meter |
| 08/28/2001 | US6282498 Load monitoring apparatus |
| 08/23/2001 | US20010015640 Apparatus for metering at least one type of electrical power over a predetermined range of service voltages |
| 08/23/2001 | DE10009325A1 Verfahren zur Überwachung der Leistungsbilanz in einem Energieversorgungsnetz und hierfür geeignetes Überwachungssystem Method for monitoring the power balance in a power supply network and suitable for this monitoring system |
| 08/22/2001 | EP1125143A2 High linearity, low offset interface for hall effect devices |
| 08/22/2001 | CN1309297A Tester of ultrashort-wave therapeutic apparatus |
| 08/09/2001 | WO2001057542A1 Power distribution status monitoring device |
| 08/07/2001 | US6272172 Measurement acquisition and display apparatus |
| 08/02/2001 | WO2001055733A1 System and method for digitally compensating frequency and temperature induced errors in amplitude and phase shift in current sensing of electronic energy meters |
| 08/01/2001 | EP1120659A1 Electrical energy meter |
| 07/31/2001 | US6269316 System and method for detecting flicker in an electrical energy supply |
| 07/25/2001 | EP1118003A1 Methods and apparatus for defining meter data calculations in an electronic electricity meter |
| 07/19/2001 | WO2001051937A1 Device and method for calibration of an electricity meter |
| 07/19/2001 | US20010008375 Current detecting device, impedance measuring instrument and power measuring instrument |
| 07/18/2001 | EP1116039A1 Methods and apparatus for updating firmware in an electronic electricity meter |
| 07/18/2001 | CN1304044A Miniature protable microwave high power meter |
| 07/17/2001 | US6262672 Reduced cost automatic meter reading system and method using locally communicating utility meters |
| 07/12/2001 | DE19908901C1 Elektrizitätszähler Electricity meters |
| 07/11/2001 | EP1114327A1 Method and apparatus for real time measurement of three phase electrical parameters |
| 07/11/2001 | EP1114326A1 Electricity meter and an input module for an electricity meter |
| 07/11/2001 | CN1303540A Method for deriving or calibrating frequency of pulse signal |
| 07/10/2001 | US6259997 Signal power detection apparatus |
| 07/05/2001 | WO2001048490A2 System for adaptive radio communication for utility meter |
| 07/05/2001 | US20010006887 Mobile station having drift-free pulsed power detection method and apparatus |
| 07/05/2001 | DE19962435A1 Elektrizitätszähler mit einem zusätzlichem Rechenmodul Electricity meter with an additional computing module |
| 07/05/2001 | CA2396012A1 System for adaptive radio communication for utility meter |