H01H 9/30
Means for extinguishing or preventing arc between current-carrying parts
H01H9/30 (Means for extinguishing or preventing arc between current-carrying parts) appears on 1,757 US grants and 1,423 published applications in this corpus.
Search patents in H01H- Granted patents
- 1,757
- Published applications
- 1,423
- Assignees
- 456
- Inventors
- 2,905
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 14 | 0 |
| 1978 | 15 | 0 |
| 1979 | 8 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 8 | 0 |
| 1983 | 20 | 0 |
| 1984 | 31 | 0 |
| 1985 | 26 | 0 |
| 1986 | 29 | 0 |
| 1987 | 33 | 0 |
| 1988 | 18 | 0 |
| 1989 | 27 | 0 |
| 1990 | 22 | 0 |
| 1991 | 14 | 0 |
| 1992 | 27 | 0 |
| 1993 | 20 | 0 |
| 1994 | 22 | 0 |
| 1995 | 21 | 0 |
| 1996 | 28 | 0 |
| 1997 | 15 | 0 |
| 1998 | 32 | 0 |
| 1999 | 33 | 0 |
| 2000 | 26 | 0 |
| 2001 | 40 | 11 |
| 2002 | 32 | 24 |
| 2003 | 28 | 26 |
| 2004 | 34 | 23 |
| 2005 | 25 | 31 |
| 2006 | 24 | 31 |
| 2007 | 20 | 23 |
| 2008 | 20 | 38 |
| 2009 | 21 | 51 |
| 2010 | 26 | 31 |
| 2011 | 25 | 34 |
| 2012 | 41 | 49 |
| 2013 | 45 | 81 |
| 2014 | 60 | 76 |
| 2015 | 65 | 80 |
| 2016 | 80 | 73 |
| 2017 | 72 | 64 |
| 2018 | 62 | 61 |
| 2019 | 83 | 74 |
| 2020 | 71 | 72 |
| 2021 | 66 | 63 |
| 2022 | 60 | 78 |
| 2023 | 63 | 100 |
| 2024 | 67 | 97 |
| 2025 | 62 | 69 |
| 2026 | 45 | 63 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01H 9/34Stationary parts for restricting or subdividing the arc733
- H01H 9/44Using blow-out magnet477
- H01H 9/46Using arcing horns188
- H01H 9/38Auxiliary contacts on to which the arc is transferred from the main153
- H01H 9/32Insulating body insertable between contacts144
- H01H 9/40Multiple main contacts for the purpose of dividing the current through, or141
- H01H 9/302Wherein arc-extinguishing gas is evolved from stationary parts104
- H01H 2009/305Including means for screening for arc gases as protection of mechanism againstIndexing code103
All 10 subgroupsShow fewer
Recent patents
- Arc elimination device22 Sep 2026US 12,744,167 B2Ls Electric Co., Ltd.
- Arc path formation unit and direct current relay comprising same22 Sep 2026US 12,744,175 B2Ls Electric Co., Ltd.
- Arc extinguishing unit and air circuit breaker comprising same25 Aug 2026US 12,718,996 B2Ls Electric Co., Ltd.
- Relay and battery system including the same25 Aug 2026US 12,719,003 B2LG Energy Solution, Ltd.
- Spark gaps with high current capability for electrical overstress detection and protection25 Aug 2026US 12,719,242 B2Analog Devices International Unlimited Company
- Switch pole for electrical systems8 Oct 2026US 2026/0311939 A1
- Electrical switch17 Sep 2026US 2026/0279698 A1Schneider Electric Industries SAS
- Switch10 Sep 2026US 2026/0269149 A1Mitsubishi Electric Corporation
- Electrical Circuit Breaker Device3 Sep 2026US 2026/0257561 A1Pacific Engineering Corp.
- Linear contactless electronic switch module3 Sep 2026US 2026/0261189 A1Black & Decker Inc.
Most cited
By later US patents
- Contact structures for sliding switches201US 6,979,786 B2Delphi Technologies, Inc. · 2005
- Molded case current limiting circuit breaker151US 5,341,191 AEaton Corporation · 1994
- Rapid electric-arc extinguishing assembly in circuit-breaking devices such as electric circuit breakers143US 4,375,021 AGeneral Electric Company · 1983
- Micromachining methods for making micromechanical moving structures including multiple contact switching system127US 5,454,904 AGeneral Electric Company · 1995
- Arc resistant high voltage micromachined electrostatic switch123US 6,057,520 AMcnc · 2000