G01R 21/005
Measuring apparent power
Official title: {Measuring apparent power}
G01R21/005 (Measuring apparent power) appears on 13 US grants and 15 published applications in this corpus.
Search patents in G01R- Granted patents
- 13
- Published applications
- 15
- Assignees
- 14
- Inventors
- 36
- Latest grant
- 10 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 4 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 3 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for performing a line-wise power flow analysis for a power system10 Oct 2023US 11,782,077 B2
- Capacitive non-contact voltage sensing method and apparatus28 Mar 2023US 11,614,469 B2Interbay Assets, LLC
- Apparatus and method for non-invasively analyzing behaviors of multiple power devices in circuit and monitoring power consumed by individual devices7 Feb 2023US 11,573,587 B2Starkoff Co., Ltd.
- System and method for submetering of a heating, ventilation, and/or air conditioning (HVAC) system31 Mar 2020US 10,605,838 B2Johnson Controls Technology Company
- Monitoring power-related parameters in a power distribution unit24 Apr 2018US 9,952,261 B2Server Technology, Inc.
- Power device and a method for determining whether a load is present10 Sep 2026US 2026/0266879 A1Cyber Power Systems, Inc.
- Power detection device3 Jul 2025US 2025/0216425 A1RichWave Technology Corp.
- Non-contact voltage sensing method and apparatus9 Jun 2022US 2022/0178971 A1Vizi Metering, Inc.
- Monitoring system17 Sep 2020US 2020/0292596 A1OMRON Corporation
- System and method for performing a line-wise power flow analysis for a power system2 Jul 2020US 2020/0209291 A1
Most cited
By later US patents
- Monitoring power-related parameters in a power distribution unit68US 8,321,163 B2Server Technology, Inc. · 2012
- Monitoring power-related parameters in a power distribution unit16US 8,694,272 B2Server Technology, Inc. · 2014
- Instrument to measure the errors of apparent power meters14US 4,937,520 ACanadian Patents and Development Limited · 1990
- Test instrument for determining apparent power consumption and ground faults in various portions of a distributed-load, constant voltage audio distribution system11US 4,061,891 A1977
- Monitoring power-related parameters in a power distribution unit10US 9,952,261 B2Server Technology, Inc. · 2018