H01H 71/321
Characterised by the magnetic circuit or active magnetic elements
Official title: {characterised by the magnetic circuit or active magnetic elements}
H01H71/321 (Characterised by the magnetic circuit or active magnetic elements) appears on 81 US grants and 35 published applications in this corpus.
Search patents in H01H- Granted patents
- 81
- Published applications
- 35
- Assignees
- 55
- Inventors
- 184
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 2 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 4 |
| 2010 | 2 | 0 |
| 2011 | 2 | 3 |
| 2012 | 1 | 2 |
| 2013 | 2 | 3 |
| 2014 | 2 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 3 |
| 2022 | 4 | 3 |
| 2023 | 0 | 1 |
| 2024 | 3 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Opening and closing mechanism and leakage protection device26 Aug 2025US 12,401,178 B2Schneider Electric (Australia) PTY LTD
- Levitation fuse device12 Nov 2024US 12,142,444 B2Gigavac, LLC
- Smart circuit interrupter accessories internal component diagnostics7 May 2024US 11,978,607 B2Eaton Intelligent Power Limited
- Intelligent circuit breaker capable of automatically releasing and tripping in power failure20 Feb 2024US 11,908,651 B2Tianjin Jmt Electric Equipment Co., Ltd
- Air gap driving mechanism of a solid-state circuit breaker includes permanent magnet(s) for contact separation27 Dec 2022US 11,538,650 B1Siemens Industry, Inc.
- Actuator for a Circuit Breaker in a Switchgear15 Jan 2026US 2026/0018359 A1ABB Schweiz AG
- Overcurrent protection device based on thermo magnetically-shiftable material10 Oct 2024US 2024/0339278 A1Centre National De La Recherche Scientifique
- Opening and closing mechanism and leakage protection device19 Jan 2023US 2023/0021012 A1Schneider Electric (Australia) PTY LTD
- Smart circuit interrupter accessories internal component diagnostics22 Sep 2022US 2022/0301801 A1Eaton Intelligent Power Limited
- Levitation fuse device27 Jan 2022US 2022/0028639 A1Gigavac, LLC
Most cited
By later US patents
- Circuit breaker99US 5,581,219 AFuji Electric Co., Ltd. · 1996
- Trip actuator for molded case circuit breakers56US 4,679,019 AGeneral Electric Company · 1987
- Resettable switching device35US 6,975,191 B2Tripco Limited · 2005
- Adjustable flux transfer shunt trip actuator and electric power switch incorporating same34US 6,218,921 B1Eaton Corporation · 2001
- Tripping device reset arrangement31US 5,670,923 AGeneral Electric Company · 1997