H01H 33/561
Composed of different independent pressurised compartments put in communication only after their
Official title: {composed of different independent pressurised compartments put in communication only after their assemblage}
H01H33/561 (Composed of different independent pressurised compartments put in communication only after their) appears on 18 US grants and 9 published applications in this corpus.
Search patents in H01H- Granted patents
- 18
- Published applications
- 9
- Assignees
- 18
- Inventors
- 38
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vacuum circuit breaker10 Feb 2026US 12,548,721 B2Mitsubishi Electric Corporation
- Integrated tank foot particle trap14 Mar 2023US 11,605,515 B2Hitachi Energy Switzerland AG
- Medium voltage circuit breaker for the use in high pressure environments3 Jul 2018US 10,014,140 B2ABB Schweiz AG
- Valve arrangement18 Jun 2013US 8,464,753 B2ABB Technology AG
- Gas insulated switchgear6 Jul 2004US 6,759,616 B2Hitachi, Ltd.
- Vacuum circuit breaker18 Jul 2024US 2024/0242907 A1Mitsubishi Electric Corporation
- Integrated tank foot particle trap30 Dec 2021US 2021/0407750 A1ABB Power Grids Switzerland AG
- Medium voltage circuit breaker for the use in high pressure environments15 Jun 2017US 2017/0169973 A1ABB Schweiz AG
- Self-blast circuit breaker using the two-phase state of a gas to improve the cut-off properties8 Jun 2017US 2017/0162349 A1ALSTOM Technology Ltd
- Process For Providing A Contamination-Reducing Component To An Electrical Apparatus11 Feb 2016US 2016/0043533 A1ABB Technology AG
Most cited
By later US patents
- Three-pole, gas-insulated switch arrangement18US 5,128,502 ASprecher Energie AG · 1992
- Gas insulated switchgear12US 6,759,616 B2Hitachi, Ltd. · 2004
- Gas insulated switchgear11US 6,680,453 B2Hitachi, Ltd. · 2004
- Device for separably assembling two enclosures of a cut-out apparatus containing fluid under pressure9US 4,386,250 ASociete Anonyme dite: Alsthom-Atlantique · 1983
- Means for assembling two enclosures of an electrical cutout apparatus9US 4,609,798 AAlsthom · 1986