| Patents for G01R 22 - Arrangements for measuring time integral of electric power or current, e.g. electricity meters (4,127) |
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| 03/30/1993 | US5198810 One-way data telemetering system utilizing the power supply mains |
| 03/30/1993 | US5198751 Reactive volt-ampere-hour meter |
| 03/17/1993 | CN1070044A Method and apparatus for converting meter register constant |
| 03/04/1993 | WO1993004377A1 Method for identifying electrical power consumers on a circuit being monitored |
| 03/04/1993 | CA2094829A1 Process for identifying power consuming loads |
| 03/03/1993 | EP0529756A1 Method and apparatus for converting a meter register constant |
| 02/24/1993 | EP0496732A4 Electronic watt-hour meter |
| 02/22/1993 | WO1993004445A1 Remote meter reading |
| 02/22/1993 | CA2094493A1 Remote meter reading |
| 02/17/1993 | CN2127175Y Multi-functional electronic watt-hour meter |
| 02/02/1993 | US5184119 Unauthorized utility use monitor apparatus and method |
| 01/12/1993 | CA1312654C Mutual inductance current transducer, method of making, and electric energy meter incorporating same |
| 01/06/1993 | CN1067744A Method and device for measuring electric power and energy |
| 11/19/1992 | EP0513848A2 Commodity metering systems |
| 11/19/1992 | EP0513847A2 Commodity metering systems |
| 09/30/1992 | CN1018483B Watt-hour meter with function of automatic charge accounting |
| 09/29/1992 | US5151866 High speed power analyzer |
| 08/05/1992 | EP0496732A1 Electronic watt-hour meter |
| 07/07/1992 | US5128611 Electronic electricity meter |
| 05/19/1992 | CA1301249C Integrated poly-phase power meter |
| 04/22/1992 | CN2102516U Computerized electric power controller |
| 04/21/1992 | US5107203 Sealed utility meter having internal automatic disconnection |
| 04/01/1992 | CN2100633U Intelligent electronic watt-hour meter |
| 01/07/1992 | US5079715 Electronic data recorder for electric energy metering |
| 11/21/1991 | EP0456763A1 Sensor |
| 10/30/1991 | EP0454360A1 Digitally measuring electrical energy consumption |
| 10/29/1991 | US5061890 Method and apparatus for digitally measuring electrical energy consumption |
| 10/22/1991 | US5059896 Electronic watthour meter |
| 08/28/1991 | CN2083756U High-recision multi-function intelligent kilowatt-hour meter |
| 08/28/1991 | CN2083755U Digital kilowatt-hour meter |
| 07/31/1991 | CN2081982U Miniature accumulating timer for high current |
| 06/25/1991 | US5027061 Electromagnetic and thermal shield for electronic energy meter |
| 06/18/1991 | US5025206 Test mode actuator and indicator for electronic energy meter |
| 06/12/1991 | CN1052194A Watt-hour meter with function of automatic charge accounting |
| 05/15/1991 | CN1051428A Electronic digital peak and valley kw-hr. meter |
| 04/23/1991 | CA1283452C Differential switched-capacitor dual slope watthour meter circuit |
| 04/03/1991 | EP0420548A2 Energy meter |
| 04/03/1991 | EP0420545A2 Electronic watthour meter |
| 04/03/1991 | EP0420544A2 Electromagnetic and thermal shield for electronic energy meter |
| 04/03/1991 | EP0420537A2 Restrictor for multiple switch external control actuator for electronic energy meter |
| 04/03/1991 | EP0420536A2 Energy meters |
| 04/03/1991 | EP0420535A2 Power supply and monitor for controlling an electrical load following a power outage |
| 04/03/1991 | EP0420534A2 Electronic energy meter |
| 04/03/1991 | CN2074458U Card-inserting electrical-load measuring controller |
| 03/26/1991 | CA2021078A1 Electronic watthour meter |
| 03/25/1991 | CA2014915A1 Modular construction for electronic energy meter |
| 03/25/1991 | CA2014914A1 Electronic watthour meter |
| 03/21/1991 | WO1991003740A1 Electronic watt-hour meter |
| 03/20/1991 | CN2073590U Digital-display dc electrodynamometer |
| 03/19/1991 | US5001420 Modular construction for electronic energy meter |
| 03/12/1991 | US4999575 Power supply and monitor for controlling an electrical load following a power outage |
| 02/19/1991 | US4994734 Register circuit board for electronic energy meter |
| 02/06/1991 | CN1011553B Electronic type electric energy metering apparatus |
| 01/16/1991 | EP0407902A2 Consumption indication device for supply means |
| 12/19/1990 | CN1010892B Milimeterwave full band power meter |
| 11/28/1990 | CN1047393A Integrated circuit used for single-phase digital kilowatt-hour meter |
| 09/26/1990 | EP0388522A2 Electronic watt-hour meter with combined multiplier/integrator circuit |
| 09/25/1990 | US4959607 Restrictor for multiple switch external control actuator for electronic energy meter |
| 09/19/1990 | CN1045457A 静电电表 Electrostatic Meter |
| 09/12/1990 | EP0386604A2 Static electricity meter |
| 09/07/1990 | CA2010568A1 Static electricity meter |
| 08/15/1990 | CN2060553U Electronic watt meter |
| 08/04/1990 | WO1990008952A1 Sensor |
| 08/04/1990 | CA2046630A1 Sensor |
| 07/17/1990 | US4942310 Arrangement for the transformation of an electrical multiphase signal into a frequency |
| 06/22/1990 | CA2003604A1 Electronic watt-hour meter with combined multiplier/integrator circuit |
| 05/30/1990 | EP0370943A2 System for telemetering data |
| 05/30/1990 | CN1042609A Digital watt-hour meter of intelligent card style |
| 05/01/1990 | US4922187 Pulse initiator circuit |
| 04/10/1990 | US4916386 Microwave wattage indicator |
| 03/20/1990 | US4910456 Electronic watt-hour meter with combined multiplier/integrator circuit |
| 03/13/1990 | US4908769 Commodity metering systems |
| 02/20/1990 | US4902965 Consumption meter for accumulating digital power consumption signals via telephone lines without disturbing the consumer |
| 12/12/1989 | US4887029 Mutual inductance current transducer, method of making and electric energy meter incorporating same |
| 11/14/1989 | US4881027 Circuit arrangement comprising input circuits to find a power output sum for application in multi-phase electricity meters |
| 11/02/1989 | EP0339189A1 Current transformer for electric energy meter and method of making the transformer |
| 11/01/1989 | CN2047027U Ampere-hour meter capable of obtaining electric current time integral value |
| 10/25/1989 | CN2046632U Pressure controlling phase and current detecting type a.c. electric meter |
| 09/26/1989 | CA1260598A1 Battery backup installation for electric meter |
| 08/30/1989 | EP0329901A2 Power failure detector and recovery apparatus for an electronic remote data recorder |
| 08/29/1989 | US4862493 Electronic remote data recorder for electric energy metering |
| 08/29/1989 | CA1258929A1 Method of and system for accumulating verifiable energy demand date from remote electricity meters |
| 08/09/1989 | CN2042598U 电子数字式电度表 Electronic digital meter |
| 08/03/1989 | DE3804592C1 Remote read-out system for consumption meter (electricity meter, supply meter) |
| 08/02/1989 | CN2042203U Time-shearing watt-hour meter and its computerized controller |
| 08/01/1989 | US4853620 Circuit arrangement comprising multiplier circuits to find the sum of electrical power outputs for application in multi-phase electricity meters |
| 06/07/1989 | CN1033322A Integrated poly-phase power meter |
| 05/23/1989 | CA1254619A1 Low cost self-contained transformerless solid state electronic watthour meter having thin film ferromagnetic current sensor |
| 04/19/1989 | CN2036276U Electric load capacity monitor |
| 04/18/1989 | US4822334 Electrical dosimetry control system |
| 04/11/1989 | US4821036 Method of and apparatus for producing a digital indication of the time-integral of an electric current |
| 02/21/1989 | US4806854 Current draw and power consumption display circuit |
| 02/08/1989 | EP0302172A1 Arrangement for determining the sum of electical powers, especially for use in polyphase electricity counters |
| 02/08/1989 | EP0302171A1 Appliance for transforming an electrial polyphase signal in a frequence |
| 02/08/1989 | EP0302170A1 Appliance for measuring electric power and its application particularly in polyphase electricity meters |
| 12/21/1988 | EP0295864A2 Consumption meter |
| 08/10/1988 | EP0277314A1 Electrical dosimetry control system |
| 06/28/1988 | US4754219 Low cost self-contained transformerless solid state electronic watthour meter having thin film ferromagnetic current sensor |
| 06/21/1988 | US4752731 Electronic type electric energy meter |
| 06/07/1988 | CA1237776A1 Time-of-use watt-hour meter with demand profile capability |