H02H 3/335
The main function being self testing of the device
Official title: {the main function being self testing of the device}
H02H3/335 (The main function being self testing of the device) appears on 318 US grants and 297 published applications in this corpus.
Search patents in H02H- Granted patents
- 318
- Published applications
- 297
- Assignees
- 116
- Inventors
- 385
- 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 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 8 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 2 |
| 2002 | 7 | 12 |
| 2003 | 4 | 5 |
| 2004 | 11 | 8 |
| 2005 | 7 | 9 |
| 2006 | 8 | 9 |
| 2007 | 7 | 17 |
| 2008 | 8 | 15 |
| 2009 | 14 | 8 |
| 2010 | 11 | 12 |
| 2011 | 13 | 7 |
| 2012 | 7 | 15 |
| 2013 | 11 | 6 |
| 2014 | 10 | 12 |
| 2015 | 8 | 9 |
| 2016 | 6 | 18 |
| 2017 | 14 | 15 |
| 2018 | 14 | 17 |
| 2019 | 18 | 6 |
| 2020 | 11 | 19 |
| 2021 | 23 | 16 |
| 2022 | 16 | 11 |
| 2023 | 16 | 13 |
| 2024 | 10 | 10 |
| 2025 | 19 | 13 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Self-test auto monitor ground fault circuit interrupter (GFCI) with power denial6 Oct 2026US 12,754,232 B2Hubbell Incorporated
- 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
- Apparatus for generating a self-check leakage current27 Jan 2026US 12,535,540 B2Schneider Electric Industries SAS
- Ground fault circuit interrupter devices and related electrical connectors and electrical appliances30 Dec 2025US 12,512,663 B2
- 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
- A fault discrimination and a current transformer saturation detection for a differential protection system25 Jun 2026US 2026/0180308 A1Hitachi Energy Ltd
- Protective device, protective assembly, electrical panel and associated test method23 Apr 2026US 2026/0110736 A1Schneider Electric Industries SAS
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
- 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
- Intelligent ground fault circuit interrupter employing miswiring detection and user testing148US 6,052,265 ALeviton Manufacturing Co., Inc. · 2000