H01H 50/56
Contact spring sets
H01H50/56 (Contact spring sets) appears on 308 US grants and 329 published applications in this corpus.
Search patents in H01H- Granted patents
- 308
- Published applications
- 329
- Assignees
- 125
- Inventors
- 514
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 0 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 0 | 5 |
| 2007 | 1 | 2 |
| 2008 | 4 | 2 |
| 2009 | 2 | 2 |
| 2010 | 3 | 2 |
| 2011 | 2 | 2 |
| 2012 | 6 | 5 |
| 2013 | 6 | 8 |
| 2014 | 6 | 8 |
| 2015 | 8 | 23 |
| 2016 | 13 | 22 |
| 2017 | 23 | 30 |
| 2018 | 18 | 20 |
| 2019 | 19 | 32 |
| 2020 | 26 | 26 |
| 2021 | 25 | 23 |
| 2022 | 27 | 23 |
| 2023 | 24 | 34 |
| 2024 | 18 | 25 |
| 2025 | 24 | 13 |
| 2026 | 9 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Relay1 Sep 2026US 12,725,747 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Multi-phase electromagnetic relay18 Aug 2026US 12,712,140 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Switching device and method for operating a switching device11 Aug 2026US 12,706,255 B2Eaton Intelligent Power Limited
- Elastic member and relay11 Aug 2026US 12,706,265 B2Tyco Electronics (Shanghai) Co., Ltd.
- Relay movable spring capable of reducing temperature rise and relay26 May 2026US 12,640,322 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Switching device17 Sep 2026US 2026/0279713 A1
- Relay movable spring capable of reducing temperature rise and relay3 Sep 2026US 2026/0260833 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
- Switching device27 Aug 2026US 2026/0253825 A1Ellenberger & Poensgen GmbH
- Relay comprising arc induction shield structure13 Aug 2026US 2026/0237582 A1Ls E-Mobility Solutions Co., Ltd.
- Plug-in relay6 Aug 2026US 2026/0229434 A1Song Chuan Precision Co., Ltd.
Most cited
By later US patents
- Electrical switching device39US 6,046,661 AGruner AG · 2000
- Electromagnetic relay38US 3,993,971 AMatsushita Electric Works, Ltd. · 1976
- Electromagnetic relay and coil terminal31US 10,242,829 B2Fujitsu Component Limited · 2019
- Switching device28US 7,782,162 B2OMRON Corporation · 2010
- Electromagnetic relay25US 6,940,375 B2OMRON Corporation · 2005