| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
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| 07/04/2001 | EP1113278A2 Electricity meter with additional computing module |
| 07/04/2001 | CN1302378A Method for transmitting and storing value and valve store electric power meter using the same |
| 06/27/2001 | CN1300944A Electronic instrument with attached calculating module |
| 06/22/2001 | CA2326035A1 Electricity meter with an additional computing module |
| 06/21/2001 | DE19957980A1 Watt-hour meter has voltage converter and switch which supply voltage signal to measurement module |
| 06/20/2001 | EP1108220A1 High function, user configurable electricity meter |
| 06/20/2001 | EP1108219A1 Electronic electricity meter including flash memory |
| 06/20/2001 | CN1300369A Apparatus and method for detecting tampering in a multiphase meter |
| 06/05/2001 | US6242901 True average wide dynamic range microwave power sensor using diode stack attenuator-diode stack |
| 05/31/2001 | WO2001038887A1 A kilowatt hour meter with a switching power supply |
| 05/29/2001 | US6239589 Method and device for compensating for angle errors when measuring electrical power |
| 05/29/2001 | CA2112089C Wide band flat power detector |
| 05/25/2001 | WO2001036988A1 Arrangement for measuring the root mean square of a power frequency voltage across a large dynamic range, especially for measuring electrical output |
| 05/23/2001 | EP1102073A1 Real time flow monitoring |
| 05/23/2001 | EP1102072A1 Real time flow monitoring |
| 05/23/2001 | DE19955342A1 Anordnung zum Messen des Effektivwertes einer Wechselspannung über einen großen Dynamikbereich, insbesondere zum Messen der elektrischen Leitung Arrangement for measuring the rms value of an alternating voltage over a large dynamic range, particularly for measuring the electrical line |
| 05/22/2001 | US6236197 Apparatus and method for detecting tampering in a multiphase meter |
| 05/16/2001 | CN1065962C Programmable electric energy meter and methods therefore |
| 05/15/2001 | US6232885 Electricity meter |
| 05/15/2001 | US6232816 Signal level monitoring circuit |
| 05/08/2001 | US6229295 Apparatus for metering at least one type of electrical power over a predetermined range of service voltages |
| 05/03/2001 | WO2001031349A1 Electromagnetic wave sensor |
| 05/02/2001 | EP1040453A4 Electronic electricity meter |
| 05/01/2001 | US6226600 Programmable electricity consumption monitor |
| 05/01/2001 | CA2160655C Data collection and processing for digital ac power system monitor/analyzer |
| 04/25/2001 | CN2427813Y Power angle monitoring instrument for synchronous generator |
| 04/18/2001 | EP1092159A1 Layered current sensor |
| 04/17/2001 | US6219655 Method of RF-based communication |
| 04/10/2001 | CA2075467C System and method for introducing meter sensor hysteresis |
| 04/03/2001 | US6212478 Computer program for rapid estimation of system values from redundant conflicting measurements |
| 04/03/2001 | US6212446 Method and apparatus for detecting out-of-step in electric power system |
| 03/29/2001 | WO2001022102A1 Method, system and apparatus for remote measuring of electrical power |
| 03/29/2001 | CA2385077A1 Method, system and apparatus for remote measuring of electrical power |
| 03/28/2001 | EP1086379A1 Method for transmitting and storing value and value store electric power meter using the same |
| 03/27/2001 | CA2148076C Power monitor apparatus and method with object oriented structure |
| 03/21/2001 | EP0866976B1 Electronic measurement device |
| 03/20/2001 | CA2148075C High accuracy power monitor and method |
| 03/07/2001 | CN1286756A Utility meter providing interface between digital network and home electronics |
| 02/06/2001 | US6185508 Power meter for determining parameters of multi-phase power lines |
| 02/06/2001 | CA2139575C High speed power analyzer |
| 01/31/2001 | CN2417479Y AC power sampling device with self error regulation |
| 01/31/2001 | CN2417478Y Portable and digital type instrument for measuring power and electric energy |
| 01/24/2001 | EP1070967A1 Method and apparatus for electronic meter testing |
| 01/23/2001 | US6177806 Signal sensor for rf integrated systems |
| 01/11/2001 | WO2001002870A1 Method and apparatus for real time measurement of three phase electrical parameters |
| 01/10/2001 | CN1279401A Kilowatt-hour meter with wide dynamic current range |
| 01/09/2001 | US6173236 Vector electricity meters and associated vector electricity metering methods |
| 01/09/2001 | US6173160 Mobile station having drift-free pulsed power detection method and apparatus |
| 01/04/2001 | WO2001001160A1 Methods and apparatus for defining meter data calculations in an electronic electricity meter |
| 01/04/2001 | WO2001001159A1 High function, user configurable electricity meter |
| 01/04/2001 | WO2001001157A1 Electronic electricity meter including flash memory |
| 01/04/2001 | WO2001001154A1 Methods and apparatus for updating firmware in an electronic electricity meter |
| 01/04/2001 | CA2339195A1 Electronic electricity meter including flash memory |
| 01/02/2001 | CA2062914C Method for determining electrical energy consumption |
| 12/27/2000 | EP1062482A1 Unit for the bidirectional detection and transmission of data via modern communication networks |
| 12/21/2000 | WO2000077535A1 Apparatus and method for monitoring power and current flow |
| 12/20/2000 | CN1277359A Device for measuring power |
| 12/14/2000 | WO2000045183A3 Electrical energy meter |
| 12/07/2000 | DE10010545A1 Reactive power calculator has phase shift circuit that performs time delay and phase shift to the one bit output data of the delta modulation vessel by using a random access memory |
| 12/06/2000 | EP1018022A4 Energy meter with power quality monitoring and diagnostic systems |
| 12/06/2000 | EP0761032B1 Electricity monitoring system |
| 11/30/2000 | DE19924346A1 Billing meter for communal supply service |
| 11/28/2000 | US6154682 Self-checking circuit in microwave equipment |
| 11/28/2000 | CA2009381C Biasing circuitry for a diode detector |
| 11/15/2000 | CN1273659A Electronic electricity meter |
| 11/14/2000 | US6147484 Device for measuring power using switchable impedance |
| 11/14/2000 | US6147481 Termination for RF circuit which senses changes in power and which is not temperature sensitive |
| 11/01/2000 | CN1058084C Method and apparatus for executing command in peurality of electrical metering device |
| 10/31/2000 | US6141626 Two-element energy meter having systems for automatic service type detection |
| 10/26/2000 | WO2000000935A9 Electronic electricity meter |
| 10/25/2000 | CN2403034Y KWH measuring arrangement for stepping motor |
| 10/24/2000 | CA2055633C Electrical measuring device having two connection configurations |
| 10/17/2000 | US6133720 High speed multifunction testing and calibration of electronic electricity meters |
| 10/11/2000 | EP1043595A1 Switched attenuator diode microwave power sensor including a stack of sensor diodes |
| 10/11/2000 | EP1043594A1 True average wide dynamic range power sensor |
| 10/11/2000 | EP1043593A1 Switched attenuator diode microwave power sensor |
| 10/11/2000 | EP1043592A1 True average wide dynamic range microwave power sensor using diode stack attenuator |
| 10/05/2000 | WO2000059092A1 Method and system for determining a quantity of energy required or consumed by a consumer |
| 10/05/2000 | WO2000058738A1 Utility meter reading device and related method |
| 10/04/2000 | EP1040453A1 Electronic electricity meter |
| 10/03/2000 | US6128584 System and method for frequency compensation in an energy meter |
| 09/28/2000 | DE19913338A1 Multi-path HF diode rectifier circuit with at least one rectifier diode and at least one charging capacitor; uses output from rectifier circuit that is loaded by same relative temperature coefficient resistance of rectifier diode |
| 09/28/2000 | DE19912958A1 Electrical performance and energy values calculating by measuring electron speed in electric conductor has NOT-gate whose delay time is selected so that its own delay time and pulse time of electrons shall be comparable |
| 09/27/2000 | CN1056925C Multifunction digital watt-hour meter for single-chip processor |
| 09/26/2000 | US6125334 Module-configurable full-chip power profiler |
| 09/20/2000 | CN2397497Y Kilowatt-hour meter with new power supply module |
| 09/13/2000 | CN1266190A Power arithmetic system |
| 09/12/2000 | US6118268 Thermoelectric measuring device |
| 09/06/2000 | EP1033580A2 Electricity meter |
| 09/05/2000 | US6115676 Methods and apparatus for performing load profile and load control |
| 08/31/2000 | WO2000050906A1 Utility meter with display during power interruption |
| 08/29/2000 | US6112159 Robust electrical utility meter |
| 08/29/2000 | US6112158 Service type recognition in electrical utility meter |
| 08/29/2000 | CA2152220C Monitoring device secured to power distribution system conductors |
| 08/29/2000 | CA2130434C Method and apparatus for electronic meter testing |
| 08/22/2000 | US6107998 Photovoltaic module with display indicator |
| 08/16/2000 | EP1027759A1 Load indicator |
| 08/16/2000 | CN1263268A Power-frequency alternating-current amperage measuring method and its measuring front-end |
| 08/15/2000 | US6104182 Method of deriving a signal indicating an oscillation in an electric power supply system |
| 08/15/2000 | CA2089315C Measuring and monitoring system |