H02H 3/044
Checking correct functioning of protective arrangements
Official title: {Checking correct functioning of protective arrangements, e.g. by simulating a fault (for differential current circuit breakers H02H3/335)}
H02H3/044 (Checking correct functioning of protective arrangements) appears on 357 US grants and 328 published applications in this corpus.
Search patents in H02H- Granted patents
- 357
- Published applications
- 328
- Assignees
- 188
- Inventors
- 728
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 0 |
| 2003 | 2 | 7 |
| 2004 | 7 | 1 |
| 2005 | 1 | 3 |
| 2006 | 2 | 2 |
| 2007 | 1 | 7 |
| 2008 | 3 | 4 |
| 2009 | 5 | 2 |
| 2010 | 2 | 5 |
| 2011 | 3 | 7 |
| 2012 | 7 | 15 |
| 2013 | 8 | 8 |
| 2014 | 7 | 15 |
| 2015 | 14 | 13 |
| 2016 | 5 | 18 |
| 2017 | 19 | 22 |
| 2018 | 17 | 34 |
| 2019 | 26 | 24 |
| 2020 | 29 | 22 |
| 2021 | 30 | 27 |
| 2022 | 23 | 23 |
| 2023 | 23 | 20 |
| 2024 | 27 | 22 |
| 2025 | 17 | 12 |
| 2026 | 14 | 15 |
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
- Bi-directional solid-state DC circuit breaker with breaking speed control15 Sep 2026US 12,738,436 B2Hong Kong Applied Science and Technology Research Institute Company Limited
- Power component and system with the power component25 Aug 2026US 12,716,963 B2ABB Schweiz AG
- Protective wiring device11 Aug 2026US 12,706,266 B2Pass & Seymour, Inc.
- End of life monitoring for a solid-state circuit breaker11 Aug 2026US 12,706,267 B2Siemens Industry, Inc.
- Circuit breaker device and method27 Aug 2026US 2026/0254225 A1Siemens Aktiengesellschaft
- Solid state circuit interrupter27 Aug 2026US 2026/0254226 A1Eaton Intelligent Power Limited
- System for power line differential protection27 Aug 2026US 2026/0254241 A1Hitachi Energy Ltd
- Power distribution device13 Aug 2026US 2026/0237999 A1Denso Corporation
- Electric meter with detection system30 Jul 2026US 2026/0219305 A1Greentec International Limited
Most cited
By later US patents
- Methods and systems for automatic testing of a relay147US 5,742,513 AABB Power T&D Company Inc. · 1998
- Fail safe fault interrupter144US 6,262,871 B1X-L Synergy · 2001
- Method of detecting systemic fault conditions in an intelligent electronic device86US 6,434,715 B1General Electric Company · 2002
- Circuit breaker with integrated self-test enhancements66US 6,426,634 B12002
- Battery protection circuit57US 6,992,463 B2Texas Instruments Incorporated · 2006