H02H 3/021
Concerning the disconnection itself
Official title: {concerning the disconnection itself, e.g. at a particular instant, particularly at zero value of current, disconnection in a predetermined order (disconnection at zero value in general H03K17/18)}
H02H3/021 (Concerning the disconnection itself) appears on 431 US grants and 531 published applications in this corpus.
Search patents in H02H- Granted patents
- 431
- Published applications
- 531
- Assignees
- 313
- Inventors
- 1,071
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 10 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 7 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 5 | 0 |
| 2003 | 2 | 4 |
| 2004 | 4 | 5 |
| 2005 | 0 | 6 |
| 2006 | 6 | 4 |
| 2007 | 2 | 7 |
| 2008 | 5 | 4 |
| 2009 | 3 | 5 |
| 2010 | 7 | 6 |
| 2011 | 5 | 4 |
| 2012 | 3 | 7 |
| 2013 | 7 | 10 |
| 2014 | 8 | 14 |
| 2015 | 8 | 16 |
| 2016 | 15 | 20 |
| 2017 | 14 | 18 |
| 2018 | 8 | 26 |
| 2019 | 25 | 33 |
| 2020 | 24 | 38 |
| 2021 | 34 | 31 |
| 2022 | 44 | 43 |
| 2023 | 32 | 29 |
| 2024 | 34 | 41 |
| 2025 | 33 | 44 |
| 2026 | 22 | 114 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of performing circuit opening and closing operation, computer program, control system and power system25 Aug 2026US 12,717,285 B2ABB Schweiz AG
- Device and method for disconnecting a high-voltage direct electric current with a fuse, and oscillating-current overload system25 Aug 2026US 12,719,257 B2Supergrid Institute
- Electronic control unit for vehicle with integrated cut-off25 Aug 2026US 12,719,261 B2Continental Automotive Technologies GmbH
- Hybrid circuit breaker using a transient commutation current injector circuit11 Aug 2026US 12,706,451 B2Illinois Institute of Technology
- Power supply protection circuit with surge suppression and method thereof4 Aug 2026US 12,700,726 B2Anpec Electronics Corporation
- Protection Circuit, Method for Protecting Electrical Load, and System1 Oct 2026US 2026/0302759 A13M Innovative Properties Company
- Circuit breaker device for protecting an electrical low-voltage circuit and method for operating a circuit breaker device24 Sep 2026US 2026/0290718 A1Siemens Aktiengesellschaft
- Electrical circuit24 Sep 2026US 2026/0291207 A1Blixt Tech AB
- Switch control apparatus including switch control circuit and power supply apparatus including switch control circuit24 Sep 2026US 2026/0291491 A1Samsung SDI.Co., Ltd.
- Switch device and method for operating a switch device17 Sep 2026US 2026/0280267 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- System for eliminating arcing faults and power distribution system employing the same218US 7,145,757 B2Eaton Corporation · 2006
- Protective circuits and devices for the prevention of fires88US 4,858,054 A1989
- Current limiting device for an electric power system68US 4,184,186 AGeneral Electric Company · 1980
- Electric blanket safety circuit68US 4,436,986 ASunbeam Corporation · 1984
- Circuit breaker protection against "arc short circuit" hazards59US 5,510,946 A1996