G01R 21/1271
Measuring real or reactive component, measuring apparent energy
Official title: {Measuring real or reactive component, measuring apparent energy}
G01R21/1271 (Measuring real or reactive component, measuring apparent energy) appears on 14 US grants and 5 published applications in this corpus.
Search patents in G01R- Granted patents
- 14
- Published applications
- 5
- Assignees
- 11
- Inventors
- 23
- Latest grant
- 11 Aug 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Power distribution box equipped with resistive leakage current detector11 Aug 2020US 10,742,009 B2Tozztech Co., Ltd.
- Decoupling synchrophasor based control system for distributed energy resources7 Apr 2020US 10,615,604 B2PXiSE Energy Solutions, LLC
- Method and system for using phasor measurements in state estimation of power systems8 Mar 2011US 7,904,261 B2British Columbia Hydro and Power Authority
- System, method, and article of manufacture for determining parameter values associated with an electrical grid18 Mar 2008US 7,346,462 B2General Electric Company
- Electronic device22 Jul 2003US 6,597,230 B2Koninklijke Philips Electronics N. V.
- Power distribution box equipped with resistive leakage current detector14 Mar 2019US 2019/0081466 A1Tozztech Co., Ltd.
- Decoupling Synchrophasor Based Control System for Distributed Energy Resources30 Nov 2017US 2017/0346291 A1PXiSE Energy Solutions, LLC
- Method and system for state estimation in power systems6 Mar 2008US 2008/0059088 A1British Columbia Transmission Corporation
- System, method, and article of manufacture for determining parameter values associated with an electrical grid4 Oct 2007US 2007/0233406 A1General Electric Company
- Electronic device26 Dec 2002US 2002/0196011 A1Koninklijke Philips Electronics N. V.
Most cited
By later US patents
- Electronic electric-energy meter60US 4,463,311 ATokyo Shibaura Denki Kabushiki Kaisha · 1984
- Circuit arrangement comprising input circuits to find a power output sum for application in multi-phase electricity meters38US 4,881,027 ALGZ Landis & Gyr Zug AG · 1989
- System, method, and article of manufacture for determining parameter values associated with an electrical grid34US 7,346,462 B2General Electric Company · 2008
- Electronic circuit for measuring electrical energy30US 4,663,587 AWestinghouse Electric Corp. · 1987
- Switched-capacitor watthour meter circuit having reduced capacitor ratio13US 4,800,333 AGeneral Electric Company · 1989