H01H 33/72
Having stationary parts for directing the flow of arc-extinguishing fluid
Official title: having stationary parts for directing the flow of arc-extinguishing fluid, e.g. arc-extinguishing chamber
H01H33/72 (Having stationary parts for directing the flow of arc-extinguishing fluid) appears on 79 US grants and 76 published applications in this corpus.
Search patents in H01H- Granted patents
- 79
- Published applications
- 76
- Assignees
- 45
- Inventors
- 226
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 3 |
| 2013 | 4 | 1 |
| 2014 | 3 | 2 |
| 2015 | 2 | 10 |
| 2016 | 6 | 13 |
| 2017 | 8 | 7 |
| 2018 | 10 | 4 |
| 2019 | 6 | 7 |
| 2020 | 10 | 7 |
| 2021 | 2 | 4 |
| 2022 | 6 | 0 |
| 2023 | 1 | 3 |
| 2024 | 1 | 4 |
| 2025 | 4 | 3 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- High voltage circuit-breaker26 Aug 2025US 12,400,816 B2Hitachi Energy Ltd
- Circuit breaker comprising an improved gas flow management1 Jul 2025US 12,347,634 B2GE Vernova Infrastructure Technology LLC
- Non-electrical device for replacing a current sensor in an arc-extinguishing chamber of a switch-disconnector, and a switch-disconnector comprising such a non-electrical device4 Mar 2025US 12,243,698 B2Schneider Electric Industries SAS
- Air circuit breaker14 Jan 2025US 12,198,879 B2Ls Electric Co., Ltd.
- Interrupter unit for a circuit breaker2 Jan 2024US 11,862,420 B2Siemens Energy Global GmbH & Co. KG
- High voltage circuit-breaker having an optimized contacts design18 Dec 2025US 2025/0385059 A1GE Vernova Infrastructure Technology LLC
- Metal enclosed circuit breaker12 Jun 2025US 2025/0191862 A1Hitachi Energy Ltd
- Arc extinguishing system for contactor and contactor23 Jan 2025US 2025/0029799 A1Schneider Electric Industries SAS
- Gas-insulated high or medium voltage circuit breaker21 Nov 2024US 2024/0387125 A1Hitachi Energy Ltd
- Sub-contact unit and direct current relay including same31 Oct 2024US 2024/0363297 A1Ls Electric Co., Ltd.
Most cited
By later US patents
- Primary circuit breaker101US 4,435,690 ARTE Corporation · 1984
- Gas-blast circuit breaker90US 4,935,590 AMerlin Gerin · 1990
- High-voltage circuit breaker with improved circuit breaker rating20US 8,389,886 B2ABB Technology AG · 2013
- Underoil primary circuit breaker17US 4,611,189 ARTE Corporation · 1986
- Circuit arrangement and method for interrupting a current flow in a DC current path14US 8,837,093 B2ABB Technology AG · 2014