H02H 3/331
Responsive to earthing of the neutral conductor
Official title: {responsive to earthing of the neutral conductor (H02H3/338 takes precedence)}
H02H3/331 (Responsive to earthing of the neutral conductor) appears on 78 US grants and 44 published applications in this corpus.
Search patents in H02H- Granted patents
- 78
- Published applications
- 44
- Assignees
- 37
- Inventors
- 130
- Latest grant
- 22 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 2 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 3 | 4 |
| 2005 | 2 | 1 |
| 2006 | 2 | 2 |
| 2007 | 3 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 2 |
| 2014 | 2 | 1 |
| 2015 | 3 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 5 |
| 2019 | 2 | 6 |
| 2020 | 4 | 1 |
| 2021 | 5 | 1 |
| 2022 | 3 | 1 |
| 2023 | 2 | 2 |
| 2024 | 1 | 4 |
| 2025 | 4 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Frequency-dependent ground fault circuit interrupter22 Jul 2025US 12,368,294 B2Semiconductor Components Industries, LLC
- Ground fault circuit interrupter (GFCI) devices, systems, and methods17 Jun 2025US 12,334,722 B2Schneider Electric USA, Inc.
- Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters20 May 2025US 12,306,252 B2Hubbell Incorporated
- Ground fault circuit interrupter (GFCI) devices, systems, and methods1 Apr 2025US 12,266,917 B2Schneider Electric USA, Inc.
- Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters26 Mar 2024US 11,940,498 B2Hubbell Incorporated
- Ground fault circuit interrupter (gfci) with limit detection and adaptive sample accumulation window9 Oct 2025US 2025/0316975 A1Cypress Semiconductor Corporation
- Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters11 Sep 2025US 2025/0283942 A1Hubbell Incorporated
- Apparatuses and methods for passive fault monitoring of current sensing devices in protective circuit interrupters15 Aug 2024US 2024/0272225 A1Hubbell Incorporated
- Ground fault circuit interrupter (gfci) devices, systems, and methods4 Jul 2024US 2024/0222954 A1Schneider Electric USA, Inc.
- Ground fault circuit interrupter (gfci) devices, systems, and methods4 Jul 2024US 2024/0222955 A1Schneider Electric USA, Inc.
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
- Self testing circuit breaker ground fault and sputtering arc trip unit204US 5,459,630 AEaton Corporation · 1995
- Ground fault circuit interrupter plug162US 5,661,623 AHubbell Incorporated · 1997
- Arc fault detector with circuit interrupter106US 5,963,406 ALeviton Manufacturing Co., Inc. · 1999
- Manually set ground fault circuit interrupter103US 5,418,678 AHubbell Incorporated · 1995