| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
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| 07/17/2007 | US7246019 Method and apparatus for measuring delay time |
| 07/05/2007 | WO2007076097A2 Apparatus and method for compensating digital input delays in an intelligent electronic device |
| 07/05/2007 | WO2006104527A3 Collecting interval data from a relative time battery powered automated meter reading devices |
| 07/05/2007 | CA2604080A1 Apparatus and method for compensating digital input delays in an intelligent electronic device |
| 07/03/2007 | US7239125 Method and apparatus for electronic meter testing |
| 06/28/2007 | US20070150214 Apparatus and method for compensating digital input delays in an intelligent electronic device |
| 06/27/2007 | CN1987492A 四象限乘法器 Four-quadrant multiplier |
| 06/27/2007 | CN1987489A AC electricity measurer based on microcomputer |
| 06/26/2007 | US7236899 Micro-magnetization analysis program, method, and apparatus |
| 06/26/2007 | US7236896 Load management in a power system |
| 06/20/2007 | CN1983361A Apparatus for driving plasma display panel with APL pre-measurement and corresponding method |
| 06/19/2007 | US7234068 Trace data and power measurement data matching apparatus and method that adds synchronization markers |
| 06/19/2007 | US7233870 Spectrometric data cleansing |
| 06/19/2007 | US7233746 Wide dynamic range sensor signal processing method & circuitry for analog and digital information signals |
| 06/14/2007 | US20070136010 Power line sensor |
| 06/13/2007 | CN1321398C Utility usage rate monitor |
| 06/07/2007 | US20070130092 Systems, Methods, and Apparatuses for Determining Demand Usage with Electricity Meters Utilized With Rolling Billing Periods |
| 06/06/2007 | EP1297347B1 Apparatus and method for the measurement and monitoring of electrical power generation and transmission |
| 06/06/2007 | CN1975441A Method for metering reactive electric energy |
| 06/05/2007 | US7227350 Bias technique for electric utility meter |
| 05/31/2007 | US20070124262 Programming electronic meter settings using a bandwidth limited communications channel |
| 05/31/2007 | US20070124094 Histogram difference method and system for power/performance measurement and management |
| 05/31/2007 | US20070120551 Apparatus for detecting temperature using transistors |
| 05/29/2007 | US7225089 System and method for remote identification of energy consumption systems and components |
| 05/29/2007 | US7225088 Programmable power supply and brownout detector for electronic equipment |
| 05/29/2007 | US7224142 Battery load power detecting system |
| 05/24/2007 | US20070118308 Motor parameter estimation method and apparatus |
| 05/24/2007 | US20070118307 Motor parameter estimation method and apparatus |
| 05/24/2007 | US20070115814 Method and apparatus for improved data transmission |
| 05/24/2007 | US20070115022 Power supply having voltage blocking clamp |
| 05/23/2007 | EP1277274B1 An accurate power detection circuit for use in a power amplifier |
| 05/23/2007 | CN1967317A Inspection method and apparatus of flat display pane |
| 05/23/2007 | CN1967278A Method and system for testing parameters of synchronization electric motor |
| 05/22/2007 | US7221145 Simplified power monitoring system for electrical panels |
| 05/18/2007 | WO2007008409A3 Automatic non-linear phase response calibration and compensation for a power measurement device |
| 05/18/2007 | WO2006128198A3 System and method for detecting impaired electric power equipment |
| 05/16/2007 | CN1963541A Electric energy computation circuit removing DC and circuit removing DC |
| 05/09/2007 | EP1782084A1 Equipment control device for providing information about an operating state of the equipment |
| 05/09/2007 | CN1961217A System and method for reading power meters |
| 05/09/2007 | CN1959420A Time arbitrary signal power statistics measurement device and methods |
| 05/09/2007 | CN1314971C Power electric energy meter of 1/4 digital square multiplier |
| 05/08/2007 | US7216241 Self-testing power supply which indicates when an output voltage is within tolerance while not coupled to an external load |
| 05/03/2007 | WO2007011944A3 Distributed rf/microwave power detector |
| 05/03/2007 | DE102004014731B4 Mess-Schaltung für den Ausgang eines Leistungsverstärkers sowie ein die Mess-Schaltung umfassender Leistungsverstärker Measuring circuit for the output of a power amplifier and a measuring circuit comprehensive power amplifier |
| 05/02/2007 | CN1956286A Detection of islanding in power grids |
| 05/01/2007 | US7212931 Electric energy meter for an AC mains supply |
| 05/01/2007 | US7212021 Manufacturing integrated circuits and testing on-die power supplies using distributed programmable digital current sinks |
| 04/26/2007 | US20070094043 Energy service business method and system |
| 04/25/2007 | EP1776756A1 Rf power sensing circuit |
| 04/25/2007 | EP1776594A1 Apparatus for detailed measurement of electric power consumption |
| 04/24/2007 | US7209839 Real time power flow method for distribution system |
| 04/24/2007 | US7209838 System and method for energy monitoring and management using a backplane |
| 04/12/2007 | US20070083479 Method, apparatus and program storage device for providing a prepaid metering system |
| 04/11/2007 | CN2888455Y Three-phase electrical power meter |
| 04/04/2007 | EP1769258A1 Dynamic line rating system with real-time tracking of conductor creep to establish the maximum allowable conductor loading as limited by clearance |
| 03/29/2007 | US20070073497 Cascading metrology apparatus and methodology |
| 03/28/2007 | EP1766424A1 Non-intrusive power monitor |
| 03/28/2007 | EP1766423A2 Method and apparatus for instrument transformer reclassification |
| 03/28/2007 | CN2884416Y Power examination circuit used for addressing-circuit and holding-circuit |
| 03/28/2007 | CN1936607A Wide-area power-angle monitoring method in electric net wide-area measuring system (WAMS) |
| 03/27/2007 | US7197378 Coordinating controller for electric power equipment |
| 03/22/2007 | US20070067122 Implementing a high resolution monotonic system clock |
| 03/22/2007 | US20070067121 Revenue class power meter with frequency rejection |
| 03/22/2007 | US20070067119 Rack-mounted power meter having removable metering options module |
| 03/22/2007 | CA2558793A1 High-density metering system |
| 03/20/2007 | US7194372 Method and system for verifying an embedded module of a mobile vehicle |
| 03/20/2007 | US7194363 Ultrasonic flowmeter |
| 03/15/2007 | US20070061927 Clock signal switching device, clock signal switching method, data bus switching device, and data bus switching method |
| 03/14/2007 | EP1761787A1 Micromechanical microwave power meter |
| 03/13/2007 | US7191113 Method and system for short-circuit current modeling in CMOS integrated circuits |
| 03/13/2007 | US7191076 Expandable intelligent electronic device |
| 03/13/2007 | US7191074 Electric power monitoring and response system |
| 03/08/2007 | US20070055640 Remote meter reading using the existing mobile network |
| 03/01/2007 | US20070050159 High-voltage power supply control system and wireless controller and method therefor |
| 02/28/2007 | EP1756593A1 Microstrip power sensor |
| 02/28/2007 | CN1922498A Magnetic bridge electric power sensor |
| 02/27/2007 | US7184903 System and method for a self-healing grid using demand side management techniques and energy storage |
| 02/27/2007 | US7184902 Motor parameter estimation method and apparatus |
| 02/27/2007 | US7183887 Control means and method of controlling a current through a coil |
| 02/27/2007 | US7183846 Device for detecting the power of a signal and integrated circuit with amplifier and related power detection device |
| 02/20/2007 | US7181517 Browser-enabled remote user interface for telecommunications power system |
| 02/20/2007 | US7181350 Blood glucose meter/modem interface arrangement |
| 02/20/2007 | US7180282 Apparatus for metering at least one type of electrical power over a predetermined range of service voltages |
| 02/15/2007 | US20070038395 Sensor apparatus and system |
| 02/15/2007 | US20070038394 System and method for reading power meters |
| 02/14/2007 | CN1300595C Direct heating terminal type micro electronic mechanical system microwave power sensor and its producing method |
| 02/14/2007 | CN1300594C High frequency detection method and high frequency detection circuit |
| 02/13/2007 | US7177771 Digital dynamic filtering and beat frequency reduction for power monitoring |
| 02/13/2007 | US7176674 Measurement of energy by means of a frequency converter |
| 02/08/2007 | WO2007014713A1 Measurement of dissipated power |
| 02/08/2007 | WO2007014424A1 An electrical power distribution and control system |
| 02/08/2007 | US20070033151 Systems, Methods, and Apparatuses for Reporting Transient Conditions in an Unattended Meter |
| 02/08/2007 | CA2617586A1 An electrical power distribution and control system |
| 02/08/2007 | CA2616936A1 Measurement of dissipated power |
| 02/07/2007 | CN2867352Y Standby energy consumption testing machine |
| 02/06/2007 | US7174261 Power line sensors and systems incorporating same |
| 02/06/2007 | US7174260 System and method for reading power meters |
| 02/06/2007 | US7174258 Apparatus and system for protection, control, and management of electricity distribution systems using time synchronization |
| 02/01/2007 | US20070027823 Extension cord capable of providing estimated power costs incurred by an electrical appliance plugged thereinto |
| 02/01/2007 | US20070027645 System and method for monitoring power in a front end rectifier power system |