H02H 3/334
With means to produce an artificial imbalance for other protection or monitoring
Official title: {with means to produce an artificial imbalance for other protection or monitoring reasons or remote control (H02H3/338 takes precedence)}
H02H3/334 (With means to produce an artificial imbalance for other protection or monitoring) appears on 434 US grants and 379 published applications in this corpus.
Search patents in H02H- Granted patents
- 434
- Published applications
- 379
- Assignees
- 154
- Inventors
- 524
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 8 | 0 |
| 1999 | 12 | 0 |
| 2000 | 8 | 0 |
| 2001 | 11 | 2 |
| 2002 | 14 | 13 |
| 2003 | 10 | 12 |
| 2004 | 16 | 11 |
| 2005 | 9 | 9 |
| 2006 | 9 | 12 |
| 2007 | 8 | 21 |
| 2008 | 11 | 17 |
| 2009 | 18 | 12 |
| 2010 | 13 | 17 |
| 2011 | 17 | 12 |
| 2012 | 9 | 17 |
| 2013 | 16 | 8 |
| 2014 | 10 | 16 |
| 2015 | 11 | 12 |
| 2016 | 9 | 21 |
| 2017 | 16 | 20 |
| 2018 | 15 | 23 |
| 2019 | 24 | 10 |
| 2020 | 19 | 21 |
| 2021 | 27 | 20 |
| 2022 | 18 | 14 |
| 2023 | 19 | 17 |
| 2024 | 13 | 13 |
| 2025 | 21 | 15 |
| 2026 | 6 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Self-test auto monitor ground fault circuit interrupter (GFCI) with power denial6 Oct 2026US 12,754,232 B2Hubbell Incorporated
- Protective wiring device11 Aug 2026US 12,706,266 B2Pass & Seymour, Inc.
- Circuit breaker12 May 2026US 12,625,183 B2Ls Electric Co., Ltd.
- Leakage current detection and interruption device and related electrical connectors and electrical appliances5 May 2026US 12,620,801 B2
- Ground fault circuit interrupter with integrated controller24 Feb 2026US 12,562,563 B2Hubbell Incorporated
- Leakage protection device and electrical device27 Aug 2026US 2026/0253828 A1Sensata Technologies Changzhou Co., Ltd.
- Ground fault circuit interrupter and detection method for the same6 Aug 2026US 2026/0229870 A1Schneider Electric Industries SAS
- Electric meter with detection system30 Jul 2026US 2026/0219305 A1Greentec International Limited
- Ground fault circuit interrupter with integrated controller2 Jul 2026US 2026/0188997 A1Hubbell Incorporated
- A fault discrimination and a current transformer saturation detection for a differential protection system25 Jun 2026US 2026/0180308 A1Hitachi Energy Ltd
Most cited
By later US patents
- Electronic circuit breaker with protection against sputtering arc faults and ground faults252US 5,224,006 AWestinghouse Electric Corp. · 1993
- Arc fault detector with circuit interrupter222US 6,433,978 B1Leviton Manufacturing Co., Inc. · 2002
- Self testing circuit breaker ground fault and sputtering arc trip unit204US 5,459,630 AEaton Corporation · 1995
- Intelligent ground fault circuit interrupter185US 5,600,524 ALeviton Manufacturing Co., Inc. · 1997
- Circuit interrupting device with reverse wiring protection161US 6,246,558 B1Leviton Manufacturing Co., Inc. · 2001