H01H 50/42
Auxiliary magnetic circuits
Official title: Auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position of rest, for damping or accelerating movement
H01H50/42 (Auxiliary magnetic circuits) appears on 90 US grants and 112 published applications in this corpus.
Search patents in H01H- Granted patents
- 90
- Published applications
- 112
- Assignees
- 42
- Inventors
- 215
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 4 |
| 2014 | 2 | 6 |
| 2015 | 5 | 9 |
| 2016 | 7 | 8 |
| 2017 | 10 | 8 |
| 2018 | 4 | 7 |
| 2019 | 10 | 10 |
| 2020 | 4 | 10 |
| 2021 | 8 | 10 |
| 2022 | 11 | 6 |
| 2023 | 8 | 10 |
| 2024 | 6 | 7 |
| 2025 | 4 | 4 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Switching device27 Aug 2026US 2026/0253825 A1Ellenberger & Poensgen GmbH
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Most cited
By later US patents
- Electromagnetic switch for auxiliary-rotation starter14US 8,248,193 B2Mitsubishi Electric Corporation · 2012
- Magnetic actuator with short response time11US 6,859,122 B2Commissariat A L' Energie Atomique · 2005
- Disconnecting device for interrupting a direct current of a current path as well as a circuit breaker7US 11,410,825 B2Ellenberger & Poensgen GmbH · 2022
- Electromagnetic relay7US 9,007,156 B2Fujitsu Component Limited · 2015
- Contact device7US 9,281,148 B2Panasonic Intellectual Property Management Co., Ltd. · 2016