G01R 19/02
Measuring effective values, i.e. root-mean-square values
G01R19/02 (Measuring effective values, i.e. root-mean-square values) appears on 251 US grants and 187 published applications in this corpus.
Search patents in G01R- Granted patents
- 251
- Published applications
- 187
- Assignees
- 175
- Inventors
- 482
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 8 | 5 |
| 2003 | 8 | 9 |
| 2004 | 7 | 4 |
| 2005 | 1 | 3 |
| 2006 | 7 | 1 |
| 2007 | 1 | 5 |
| 2008 | 4 | 3 |
| 2009 | 3 | 2 |
| 2010 | 3 | 5 |
| 2011 | 3 | 6 |
| 2012 | 3 | 6 |
| 2013 | 8 | 10 |
| 2014 | 6 | 10 |
| 2015 | 8 | 8 |
| 2016 | 10 | 8 |
| 2017 | 9 | 6 |
| 2018 | 13 | 14 |
| 2019 | 9 | 17 |
| 2020 | 20 | 9 |
| 2021 | 6 | 5 |
| 2022 | 8 | 12 |
| 2023 | 6 | 9 |
| 2024 | 7 | 12 |
| 2025 | 7 | 8 |
| 2026 | 13 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power meter determining an operating state6 Oct 2026US 12,754,220 B2Senva Inc.
- Magnetic sensor array processing for interference reduction6 Oct 2026US 12,754,260 B2Texas Instruments Incorporated
- Method for detecting a ground fault, a control unit and an energy storage system8 Sep 2026US 12,730,158 B2Hitachi Energy Ltd
- Method for power calibration18 Aug 2026US 12,710,458 B2ElectDis AB
- Method and system for determining a capacitance value4 Aug 2026US 12,699,123 B2Eaton Intelligent Power Limited
- Adaptive characterization process for induction cooktop system27 Aug 2026US 2026/0251684 A1Whirlpool Corporation
- Measuring and calibrating the characteristic coefficient of a root mean square (rms) power detector20 Aug 2026US 2026/0243810 A1STMicroelectronics International N. V.
- Method, apparatus, and system for predicting performance degradation of a distribution transformer30 Jul 2026US 2026/0221804 A1
- Method for accounting for power loss2 Jul 2026US 2026/0186032 A1BH EVS Co., Ltd.
- Apparatus, system and method for measuring high voltage on high-voltage node18 Jun 2026US 2026/0169038 A1Hitachi Energy Ltd
Most cited
By later US patents
- Programmable supervisory circuit and applications thereof137US 6,618,711 B1International Business Machines Corporation · 2003
- High speed power analyzer92US 5,151,866 AThe Dow Chemical Company · 1992
- Two-terminal transistor rectifier circuit arrangement70US 4,519,024 AAT&T Bell Laboratories · 1985
- Measuring system56US 4,240,149 ALeeds & Northrup Company · 1980
- Electrical mean square voltage sensor55US 4,218,627 APolaroid Corporation · 1980