H01H 9/34
Stationary parts for restricting or subdividing the arc
Official title: Stationary parts for restricting or subdividing the arc, e.g. barrier plate
H01H9/34 (Stationary parts for restricting or subdividing the arc) appears on 733 US grants and 586 published applications in this corpus.
Search patents in H01H- Granted patents
- 733
- Published applications
- 586
- Assignees
- 188
- Inventors
- 1,359
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 10 | 0 |
| 1984 | 11 | 0 |
| 1985 | 8 | 0 |
| 1986 | 18 | 0 |
| 1987 | 10 | 0 |
| 1988 | 8 | 0 |
| 1989 | 10 | 0 |
| 1990 | 10 | 0 |
| 1991 | 10 | 0 |
| 1992 | 11 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 3 | 0 |
| 1998 | 17 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 21 | 8 |
| 2002 | 11 | 11 |
| 2003 | 17 | 15 |
| 2004 | 15 | 7 |
| 2005 | 12 | 10 |
| 2006 | 12 | 18 |
| 2007 | 9 | 10 |
| 2008 | 9 | 22 |
| 2009 | 11 | 29 |
| 2010 | 13 | 13 |
| 2011 | 10 | 18 |
| 2012 | 20 | 19 |
| 2013 | 19 | 29 |
| 2014 | 24 | 36 |
| 2015 | 28 | 37 |
| 2016 | 40 | 32 |
| 2017 | 32 | 26 |
| 2018 | 29 | 22 |
| 2019 | 33 | 24 |
| 2020 | 23 | 24 |
| 2021 | 23 | 19 |
| 2022 | 17 | 30 |
| 2023 | 25 | 41 |
| 2024 | 25 | 29 |
| 2025 | 26 | 30 |
| 2026 | 17 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 9/342Venting arrangements for arc chutes318
- H01H 9/36Metal parts251
- H01H 9/346Details concerning the arc formation chamber88
- H01H 9/345Mounting of arc chutes65
- H01H 2009/348Provisions for recirculation of arcing gasses to improve the arc extinguishingIndexing code24
- H01H 2009/347Using lids for closing the arc chamber after assemblyIndexing code18
- H01H 9/341Barrier plates carrying electrodes16
Recent patents
- Arc extinguishing unit and air circuit breaker comprising same25 Aug 2026US 12,718,996 B2Ls Electric Co., Ltd.
- Switch disconnector with an arc extinguishing shield plate11 Aug 2026US 12,706,256 B2Eaton Intelligent Power Limited
- Deflection member, breaking module, and contactor4 Aug 2026US 12,700,558 B2Schneider Electric Industries SAS
- Device for extinguishing arcs in an electrical circuit14 Jul 2026US 12,683,097 B2ABB Schweiz AG
- High-voltage arc quenching systems and electrical switching devices comprising the same16 Jun 2026US 12,658,382 B2TE Connectivity Germany GmbH
- Electrical switch17 Sep 2026US 2026/0279698 A1Schneider Electric Industries SAS
- Switch10 Sep 2026US 2026/0269149 A1Mitsubishi Electric Corporation
- Linear contactless electronic switch module3 Sep 2026US 2026/0261189 A1Black & Decker Inc.
- Dual venting system for arc chute performance enhancement27 Aug 2026US 2026/0253815 A1Eaton Intelligent Power Limited
- Circuit breaker, power converter, energy storage system, and electric vehicle6 Aug 2026US 2026/0229429 A1Huawei Digital Power Technologies Co., Ltd.
Most cited
By later US patents
- Rapid electric-arc extinguishing assembly in circuit-breaking devices such as electric circuit breakers143US 4,375,021 AGeneral Electric Company · 1983
- Instantaneous trip device of a circuit breaker119US 5,103,198 AMerlin Gerin · 1992
- Molded case circuit breaker with removable arc chutes and disengageable transmission system between the operating mechanism and the poles116US 4,764,650 AMerlin Gerin · 1988
- Multipole circuit breaker with single-pole units107US 5,281,776 AMerlin Gerin · 1994
- Sealed contact device with contact gap adjustment capability102US 5,892,194 AMatsushita Electric Works, Ltd. · 1999