G01R 21/001
Measuring real or reactive component
Official title: {Measuring real or reactive component; Measuring apparent energy (G01R21/01, G01R21/02, G01R21/08, G01R21/10 and G01R21/127 take precedence)}
G01R21/001 (Measuring real or reactive component) appears on 123 US grants and 124 published applications in this corpus.
Search patents in G01R- Granted patents
- 123
- Published applications
- 124
- Assignees
- 104
- Inventors
- 312
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 4 |
| 2011 | 3 | 2 |
| 2012 | 1 | 3 |
| 2013 | 1 | 8 |
| 2014 | 5 | 10 |
| 2015 | 6 | 12 |
| 2016 | 4 | 12 |
| 2017 | 9 | 8 |
| 2018 | 10 | 10 |
| 2019 | 13 | 9 |
| 2020 | 11 | 16 |
| 2021 | 4 | 5 |
| 2022 | 8 | 3 |
| 2023 | 11 | 7 |
| 2024 | 4 | 1 |
| 2025 | 2 | 4 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-intrusive load monitoring method based on V—I trajectory and neural network23 Jun 2026US 12,663,450 B2Zhejiang University
- Strain sensor-based workpiece processing monitoring method and system for same10 Mar 2026US 12,571,623 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Methods, systems and devices for monitoring power consumption and generation17 Feb 2026US 12,553,927 B2Powersensor Pty Ltd
- System and method for creation and operation of a microgrid from a preexisting electric grid14 Oct 2025US 12,444,974 B1Pondera LLC
- Method for measuring degree of stability of generator and power transmission line, and electrical grid control system20 May 2025US 12,306,225 B2Huaneng Clean Energy Research Institute
- Power device and a method for determining whether a load is present10 Sep 2026US 2026/0266879 A1Cyber Power Systems, Inc.
- Method for validating measurement/metering information for packet filtering based on deep packet inspection and distributed energy resource gateway using the same4 Jun 2026US 2026/0154145 A1Korea Electric Power Corporation
- Radio frequency power detection device and system21 May 2026US 2026/0140153 A1Shenzhen Rspower Technology Co., Ltd.
- Electronic device and method to estimate input power into resonant tank in resonant circuit30 Apr 2026US 2026/0118394 A1Delta Electronics, Inc.
- Method, apparatus and system for testing inertia coefficient and damping coefficient of grid-forming converter29 Jan 2026US 2026/0029290 A1Shandong University
Most cited
By later US patents
- Arrangement for electrical measurement75US 5,124,624 ALandis & Gyr Betriebs AG · 1992
- Monitoring power-related parameters in a power distribution unit68US 8,321,163 B2Server Technology, Inc. · 2012
- Poynting vector probe for measuring electrical power53US 4,810,954 ACanadian Patents and Development Limited · 1989
- Method and apparatus for measuring volt-amps reactive power using synthesized voltage phase shift53US 5,243,536 AMetricom, Inc. · 1993
- Method and apparatus for measuring electrical parameters using a differentiating current sensor and a digital integrator45US 5,485,393 AMetricom, Inc. · 1996