| Patents for G01R 21 - Arrangements for measuring electric power or power factor (6,609) |
|---|
| 12/09/2009 | CN101598750A Measuring method of power consumption of chip |
| 12/08/2009 | US7630841 Supervising and sequencing commonly driven power supplies with digital information |
| 12/08/2009 | US7630794 Isolated operation detecting method, control apparatus for detecting isolated operation for distributed power supply |
| 12/08/2009 | CA2434742C Electric energy saving system |
| 12/03/2009 | WO2009126622A3 Mobile intelligent metering and charging system for charging uniquely identifiable chargable vehicle destinations |
| 12/03/2009 | US20090299919 Calculating utility consumption of at least one unit of a building |
| 12/03/2009 | US20090299780 Method and apparatus for determining and/or providing power output information of wind turbine farms |
| 12/03/2009 | US20090299660 Method and System to Identify Utility Leaks |
| 12/03/2009 | US20090295370 Branch meter with strip adjustment |
| 12/02/2009 | EP2126594A2 Electrical power system control communications network |
| 12/02/2009 | CN101593983A Method for quickly positioning oscillating center of electric system |
| 12/02/2009 | CN101593965A Intelligent low-voltage motor protector with function of electric energy measurement |
| 12/01/2009 | US7627399 Method for calculating availability for line power systems |
| 12/01/2009 | US7626378 Signal powered A.C. current transformer electronic measuring circuit |
| 11/26/2009 | WO2009140777A1 Power measuring device |
| 11/26/2009 | US20090292486 Load Model Generation for Estimating a Load Value from a Base Load Value in a System |
| 11/25/2009 | CN201352235Y Three-phase multifunctional electric energy meter |
| 11/25/2009 | CN201352234Y Three-phase multifunctional electric energy meter |
| 11/25/2009 | CN101587143A CT charge on-line detection device and detection method |
| 11/24/2009 | US7622911 Electrical power metering device and method of operation thereof |
| 11/19/2009 | WO2009140049A2 System and methods for metering and analyzing energy consumption of events within a portable device |
| 11/19/2009 | WO2009137902A1 Individualized self-monitoring system for transformers in power measurement installations and method of self-monitoring and diagnosis of transformers in power measurement installations |
| 11/19/2009 | US20090287433 System and methods for metering and analyzing energy consumption of events within a portable device |
| 11/19/2009 | US20090287432 Testing apparatus and method for signal strength of powerline networks |
| 11/19/2009 | US20090284249 Sensor, Method and System of Monitoring Transmission Lines |
| 11/18/2009 | CN201348644Y Electric power frequency conversion efficiency analyzer |
| 11/18/2009 | CN101581740A Method for automatically allocating instruments for testing power, voltage withstanding and grounding |
| 11/18/2009 | CN100561237C Wide-area power-angle monitoring method in electric net wide-area measuring system (WAMS) |
| 11/18/2009 | CN100561236C Microelectron-mechanical reconfigurable broad band microwave power detector and method of manufacturing the same |
| 11/17/2009 | US7620826 Thermal throttling duty estimation methods and systems for a CPU |
| 11/12/2009 | WO2009137070A1 Aggregator, monitor, and manager of distributed micro-generators |
| 11/12/2009 | US20090281743 Managing energy usage by devices associated with a virtual universe resource conservation |
| 11/12/2009 | US20090281741 System, method, and apparatus for monitoring power |
| 11/12/2009 | US20090281677 Systems and methods for assessing and optimizing energy use and environmental impact |
| 11/12/2009 | CA2723634A1 Aggregator, monitor, and manager of distributed micro-generators |
| 11/11/2009 | EP2116854A1 Active current sensor and current measuring device |
| 11/11/2009 | EP2115397A1 Utility monitoring device, system and method |
| 11/11/2009 | CN201344965Y High-voltage electric energy monitoring device |
| 11/11/2009 | CN101576582A Method for estimating electrode current according to transformer primary side and secondary side ampere-voltage and parameters thereof |
| 11/10/2009 | US7616656 System and method for providing communication between intelligent electronic devices via an open channel |
| 11/05/2009 | WO2009134349A1 Multi configurable lighting and energy control system and modules |
| 11/05/2009 | WO2009052361A3 Electrical power metering device and method of operation thereof |
| 11/05/2009 | US20090276171 Data processing apparatus and method |
| 11/05/2009 | US20090273337 Electric field sensor with electrode interleaving vibration |
| 11/03/2009 | US7613624 Computerized management system and method for maintenance performance evaluation and improvement |
| 10/29/2009 | US20090267610 Network device and method for indicating signal power transmitted and battery capacitance of same |
| 10/28/2009 | CN101568843A System and method for locating and analyzing arcing phenomena |
| 10/28/2009 | CN101567581A Universal intelligent low-voltage monitoring system |
| 10/28/2009 | CN101566641A Power system transmission line parameter synchronic measurement and recording device |
| 10/27/2009 | US7609051 Energy metering system |
| 10/22/2009 | US20090265124 Intelligent Electronic Device for Providing Broadband Internet Access |
| 10/22/2009 | US20090265123 Back-up data delivery device for an unpowered utility meter and method of using the same |
| 10/22/2009 | US20090261779 Transmission line directional awareness |
| 10/21/2009 | CN101561303A Module for realizing function expansion by combining with metering device |
| 10/21/2009 | CN101561300A Multifunctional metering device |
| 10/21/2009 | CN101561299A Modularized metering device |
| 10/15/2009 | WO2009126811A2 Transmission line directional awareness |
| 10/15/2009 | WO2009125659A1 Device state detecting device, device state detecting method, device state detecting server, device state detecting system, liver abnormality detecting device, liver abnormality detecting system, liver abnormality detecting method, and device state database maintaining server |
| 10/15/2009 | WO2009125627A1 Equipment state detecting apparatus, equipment state detecting method, family member accident detecting apparatus, family member accident detecting system, and family member accident detecting method |
| 10/15/2009 | WO2009124833A1 Method and device for determining the effective electrical power of a plurality of user branches |
| 10/15/2009 | US20090259418 Current-voltage conversion circuit and power consumption detection circuit and electronic device using the same |
| 10/15/2009 | US20090259417 Method to calculate energy efficiency of information technology equipment |
| 10/15/2009 | CA2720731A1 Transmitter power monitor |
| 10/14/2009 | EP2108967A1 Method and device for calculating the electric active power of several consumer branch pipes |
| 10/07/2009 | CN201322778Y Measuring device for load characteristic of power system |
| 10/07/2009 | CN201322772Y Automatic power factor recorder |
| 10/07/2009 | CN101553736A 集成式能量计量系统 The integrated energy metering system |
| 10/07/2009 | CN101553735A System and method for array and string level monitoring of a grid-connected photovoltaic power system |
| 10/01/2009 | WO2009119238A1 Current detector and voltmeter using the same |
| 10/01/2009 | WO2009037163A3 Method and apparatus for monitoring power transmission |
| 10/01/2009 | US20090248330 Watt-hour meter |
| 10/01/2009 | US20090243592 Measuring device with negative-feedback dc voltage amplifier |
| 10/01/2009 | US20090243591 Power meter having complex quadrature output current and voltage filters |
| 10/01/2009 | DE102008015160A1 Detektoreinrichtung Detector means |
| 09/30/2009 | EP2104860A2 Poly-phase electric energy meter |
| 09/30/2009 | EP2104859A2 Polyphase electric energy meter |
| 09/30/2009 | CN101546176A Control device and electric power estimating method |
| 09/29/2009 | US7596459 Apparatus and methods for multi-channel electric metering |
| 09/24/2009 | WO2009115310A1 Detector device |
| 09/24/2009 | US20090240449 Power Distribution Monitoring System And Method |
| 09/23/2009 | CN101542298A Electronic watthour meter |
| 09/23/2009 | CN101539595A Machine-vision lighting system |
| 09/17/2009 | WO2009042414A3 Virtual branch load management |
| 09/16/2009 | CN201311451Y High-accuracy single-phase electric meter |
| 09/15/2009 | US7590499 Recording and conveying energy consumption and power information |
| 09/10/2009 | US20090228726 Environmentally Cognizant Power Management |
| 09/10/2009 | US20090228224 Intelligent electronic device with enhanced power quality monitoring and communications capabilities |
| 09/10/2009 | DE102007046921B4 Elektrizitätszähler Electricity meters |
| 09/09/2009 | CN201307137Y Device for detecting output power automatically |
| 09/09/2009 | CN101526816A Indication method of unit production electricity consumption of electric system for cement plants |
| 09/09/2009 | CN101526565A Full-power electric energy measurement instrument |
| 09/09/2009 | CN101526564A Detection device for power and standing wave ratio |
| 09/03/2009 | WO2009088642A3 System, method and apparatus for monitoring characteristics of rf power |
| 09/03/2009 | US20090219036 Micromechanical Microwave Power Meter |
| 09/02/2009 | EP2096450A2 Watt-hour meter |
| 09/02/2009 | EP2096415A1 Electronic household meter for household use (household meter) |
| 09/02/2009 | EP1405086B1 Power detection circuit for use in a power amplifier |
| 09/02/2009 | CN101523225A Radio frequency handling device |
| 09/01/2009 | USRE40889 Power metering module |
| 09/01/2009 | US7584066 Method for determining power flow in an electrical distribution system |