H01H 33/66238
Specific bellows details
Official title: {Specific bellows details}
H01H33/66238 (Specific bellows details) appears on 108 US grants and 71 published applications in this corpus.
Search patents in H01H- Granted patents
- 108
- Published applications
- 71
- Assignees
- 44
- Inventors
- 232
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 1 | 6 |
| 2014 | 1 | 2 |
| 2015 | 3 | 1 |
| 2016 | 2 | 3 |
| 2017 | 4 | 2 |
| 2018 | 3 | 5 |
| 2019 | 0 | 7 |
| 2020 | 8 | 6 |
| 2021 | 6 | 5 |
| 2022 | 3 | 4 |
| 2023 | 5 | 4 |
| 2024 | 6 | 7 |
| 2025 | 4 | 4 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vacuum circuit breaker10 Feb 2026US 12,548,721 B2Mitsubishi Electric Corporation
- Circuit breaker13 Jan 2026US 12,525,416 B2Mitsubishi Electric Corporation
- Contactor and general switching device comprised thereof9 Dec 2025US 12,494,332 B2
- Circuit breaker25 Nov 2025US 12,482,617 B2Schneider Electric Industries SAS
- Vacuum circuit breaker5 Aug 2025US 12,381,051 B2Mitsubishi Electric Corporation
- Vacuum valve and vacuum circuit breaker24 Sep 2026US 2026/0290729 A1Mitsubishi Electric Corporation
- Bellows for a Vacuum Interrupter24 Sep 2026US 2026/0290730 A1ABB Schweiz AG
- Vacuum interrupter27 Aug 2026US 2026/0253822 A1Hyosung Heavy Industries Corporation
- Vacuum circuit breaker6 Aug 2026US 2026/0229430 A1Hd Hyundai Electric Co., Ltd.
- Bellows protector for a vacuum interrupter9 Apr 2026US 2026/0100320 A1Maschinenfabrik Reinhausen GmbH
Most cited
By later US patents
- High voltage vacuum type circuit interrupter121US 4,568,804 AJoslyn Mfg. and Supply Co. · 1986
- Protective switch device and operating mechanism therefor63US 4,124,790 AMcGraw-Edison Company · 1978
- Current interchange for vacuum capacitor switch56US 5,597,992 ACooper Industries, Inc. · 1997
- Vacuum power interrupter27US 4,077,114 AKabushiki Kaisha Gemvac · 1978
- Electrical switchgear apparatus comprising a vacuum cartridge and a flexible electrical connector24US 6,410,875 B1Schneider Electric Industries SAS · 2002