H01H 9/443
Using permanent magnets
Official title: {using permanent magnets}
H01H9/443 (Using permanent magnets) appears on 349 US grants and 393 published applications in this corpus.
Search patents in H01H- Granted patents
- 349
- Published applications
- 393
- Assignees
- 109
- Inventors
- 517
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 3 |
| 2006 | 3 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 3 |
| 2009 | 1 | 10 |
| 2010 | 2 | 5 |
| 2011 | 6 | 6 |
| 2012 | 7 | 9 |
| 2013 | 14 | 44 |
| 2014 | 25 | 32 |
| 2015 | 31 | 21 |
| 2016 | 23 | 20 |
| 2017 | 25 | 19 |
| 2018 | 14 | 14 |
| 2019 | 16 | 20 |
| 2020 | 15 | 17 |
| 2021 | 15 | 20 |
| 2022 | 15 | 33 |
| 2023 | 27 | 39 |
| 2024 | 31 | 40 |
| 2025 | 26 | 19 |
| 2026 | 15 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Arc path formation unit and direct current relay comprising same22 Sep 2026US 12,744,175 B2Ls Electric Co., Ltd.
- Relay and battery system including the same25 Aug 2026US 12,719,003 B2LG Energy Solution, Ltd.
- High-voltage arc quenching systems and electrical switching devices comprising the same16 Jun 2026US 12,658,382 B2TE Connectivity Germany GmbH
- Relay9 Jun 2026US 12,651,719 B2Xiamen Hongfa Electric Power Controls Co., Ltd.
- Interrupter and air circuit breaker comprising same2 Jun 2026US 12,646,675 B2Ls Electric Co., Ltd.
- Relay comprising arc induction shield structure13 Aug 2026US 2026/0237582 A1Ls E-Mobility Solutions Co., Ltd.
- Electric circuit breaker device6 Aug 2026US 2026/0229432 A1Daicel Corporation
- Arc path formation unit and direct current relay comprising same6 Aug 2026US 2026/0229435 A1Ls E-Mobility Solutions Co., Ltd.
- Switchgear16 Jul 2026US 2026/0204500 A1Mitsubishi Electric Corporation
- Relay16 Jul 2026US 2026/0204502 A1Xiamen Hongfa Electric Power Controls Co., Ltd.
Most cited
By later US patents
- Plunger type electromagnetic relay with arc extinguishing structure92US 5,546,061 ANippondenso Co., Ltd. · 1996
- Contactor78US 6,700,466 B1Matsushita Electric Works, Ltd. · 2004
- Electromagnetic relay52US 8,138,863 B2OMRON Corporation · 2012
- Electromagnet device51US 8,179,217 B2OMRON Corporation · 2012
- Direct current switching apparatus45US 5,004,874 AEaton Corporation · 1991