H01H 50/40
Branched or multiple-limb main magnetic circuits
H01H50/40 (Branched or multiple-limb main magnetic circuits) appears on 39 US grants and 40 published applications in this corpus.
Search patents in H01H- Granted patents
- 39
- Published applications
- 40
- Assignees
- 24
- Inventors
- 64
- Latest grant
- 9 Dec 2025
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 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 0 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 10 |
| 2014 | 0 | 1 |
| 2015 | 8 | 3 |
| 2016 | 5 | 2 |
| 2017 | 1 | 3 |
| 2018 | 2 | 3 |
| 2019 | 3 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 2 |
| 2022 | 3 | 2 |
| 2023 | 1 | 5 |
| 2024 | 5 | 1 |
| 2025 | 2 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Direct current relay9 Dec 2025US 12,494,334 B2Ls Electric Co., Ltd.
- Hinge type bistable magnetic circuit structure and magnetic latching relay19 Aug 2025US 12,394,583 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Direct-current relay capable of extinguishing arc and resisting short-circuit current2 Jul 2024US 12,027,333 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Direct-current relay capable of extinguishing arc and resisting short-circuit current2 Jul 2024US 12,027,334 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Direct-current relay capable of extinguishing arc and resisting short-circuit current2 Jul 2024US 12,027,335 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Actuator for a Circuit Breaker in a Switchgear15 Jan 2026US 2026/0018359 A1ABB Schweiz AG
- Assembling an electromechanical switching device to minimize air gaps in magnetic circuit pathways13 Nov 2025US 2025/0349482 A1Sensata Technologies, Inc.
- Electromagnetic system and contactor17 Jul 2025US 2025/0232936 A1Chint Low Voltage Electrical Technology Co., Ltd.
- Hinge type bistable magnetic circuit structure and magnetic latching relay14 Mar 2024US 2024/0087827 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
- Direct-current relay capable of extinguishing arc and resisting short-circuit current17 Aug 2023US 2023/0260730 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
Most cited
By later US patents
- Contact switching device15US 8,941,453 B2OMRON Corporation · 2015
- System for remotely controlling a load13US 4,338,649 AMinnesota Mining and Manufacturing Company · 1982
- Contact switching device13US 8,947,183 B2OMRON Corporation · 2015
- Electromagnetic relay10US 6,489,868 B1Fujitsu Takamisawa Component Limited · 2002
- Solenoid coil bobbin for electromagnetic switch6US 5,281,940 AMitsubishi Denki Kabushiki Kaisha · 1994