H01H 33/57
Recuperation of liquid or gas
H01H33/57 (Recuperation of liquid or gas) appears on 16 US grants and 7 published applications in this corpus.
Search patents in H01H- Granted patents
- 16
- Published applications
- 7
- Assignees
- 14
- Inventors
- 47
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 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 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Degassing membrane tube module and online gas-in-oil monitoring apparatus for vacuum on-load tap changer (OLTC)23 Sep 2025US 12,424,395 B2State Grid Hubei Electric Power Research Institute
- Gas circuit breaker24 Oct 2023US 11,798,762 B2Kabushiki Kaisha Toshiba
- Electrical energy transmission device and life cycle management22 Nov 2022US 11,509,121 B2Siemens Aktiengesellschaft
- Particle extraction system for an interrupter2 Feb 2021US 10,910,178 B2ABB Power Grids Switzerland AG
- Particle extraction system for an interrupter19 Nov 2019US 10,483,059 B2ABB Schweiz AG
- Electromagnetic relay29 Feb 2024US 2024/0071702 A1OMRON Corporation
- Degassing membrane tube module and online gas-in-oil monitoring apparatus for vacuum on-load tap changer (oltc)5 Oct 2023US 2023/0317381 A1State Grid Hubei Electric Power Research Institute
- Gas circuit breaker6 Oct 2022US 2022/0319785 A1Kabushiki Kaisha Toshiba
- Electrical Energy Transmission Device And Life Cycle Management28 Oct 2021US 2021/0336479 A1Siemens Aktiengesellschaft
- Particle extraction system for an interrupter6 Feb 2020US 2020/0043685 A1ABB Schweiz AG
Most cited
By later US patents
- Filtering means for arc suppressing gas system32US 4,259,097 ASiemens-Allis, Inc. · 1981
- Corrosion resistant means in exhaust control device for circuit interrupting devices22US 4,001,750 AS&C Electric Company · 1977
- Puffer type gas circuit breaker17US 4,236,053 AHitachi, Ltd. · 1980
- Circuit-breakers for high voltages13US 4,109,124 ACoq B.V. · 1978
- Electrical loadbreak arc quenching and containing assembly11US 3,984,651 AMcGraw-Edison Company · 1976