H01H 9/302
Wherein arc-extinguishing gas is evolved from stationary parts
Official title: {wherein arc-extinguishing gas is evolved from stationary parts}
H01H9/302 (Wherein arc-extinguishing gas is evolved from stationary parts) appears on 104 US grants and 95 published applications in this corpus.
Search patents in H01H- Granted patents
- 104
- Published applications
- 95
- Assignees
- 59
- Inventors
- 305
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 1 |
| 2003 | 0 | 2 |
| 2004 | 5 | 2 |
| 2005 | 0 | 1 |
| 2006 | 3 | 6 |
| 2007 | 2 | 2 |
| 2008 | 0 | 5 |
| 2009 | 1 | 6 |
| 2010 | 2 | 4 |
| 2011 | 3 | 1 |
| 2012 | 6 | 2 |
| 2013 | 0 | 4 |
| 2014 | 3 | 5 |
| 2015 | 2 | 1 |
| 2016 | 5 | 3 |
| 2017 | 4 | 5 |
| 2018 | 3 | 4 |
| 2019 | 7 | 3 |
| 2020 | 2 | 2 |
| 2021 | 5 | 7 |
| 2022 | 5 | 5 |
| 2023 | 5 | 4 |
| 2024 | 3 | 8 |
| 2025 | 2 | 7 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Arc extinguishing unit and air circuit breaker comprising same25 Aug 2026US 12,718,996 B2Ls Electric Co., Ltd.
- Interrupter and air circuit breaker comprising same2 Jun 2026US 12,646,675 B2Ls Electric Co., Ltd.
- Circuit breaking unit and air circuit breaker including same5 May 2026US 12,620,536 B2Ls Electric Co., Ltd.
- Arc extinguishing unit, interruption unit, and air circuit breaker comprising same17 Feb 2026US 12,555,733 B2Ls Electric Co., Ltd.
- Electric circuit breaker device10 Feb 2026US 12,548,722 B2Daicel Corporation
- Fixed contact part and breaker including same23 Jul 2026US 2026/0213104 A1Ls Electric Co., Ltd.
- Electric circuit breaker device25 Jun 2026US 2026/0177365 A1Daicel Corporation
- Arc quenching and flame retarding coating for electronic devices30 Apr 2026US 2026/0120924 A1Littelfuse, Inc.
- Electrical Circuit Breaker Device1 Jan 2026US 2026/0004986 A1Pacific Engineering Corp.
- Switching device9 Oct 2025US 2025/0316431 A1TDK Electronics Co., Ltd.
Most cited
By later US patents
- High pressure arc extinguishing chamber83US 4,883,931 AMerlin Gerin · 1989
- Contactor78US 6,700,466 B1Matsushita Electric Works, Ltd. · 2004
- Fast acting explosive circuit interrupter66US 4,224,487 A1980
- Current limiting circuit interrupter36US 4,743,720 AMatsushita Electric Works, Ltd. · 1988
- High current bistable relay with arc suppression28US 6,707,358 B1Deltrol Controls · 2004