H01H 33/66
Vacuum switches
H01H33/66 (Vacuum switches) appears on 1,619 US grants and 1,274 published applications in this corpus.
Search patents in H01H- Granted patents
- 1,619
- Published applications
- 1,274
- Assignees
- 292
- Inventors
- 2,368
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 27 | 0 |
| 1978 | 29 | 0 |
| 1979 | 14 | 0 |
| 1980 | 19 | 0 |
| 1981 | 24 | 0 |
| 1982 | 18 | 0 |
| 1983 | 22 | 0 |
| 1984 | 34 | 0 |
| 1985 | 33 | 0 |
| 1986 | 22 | 0 |
| 1987 | 25 | 0 |
| 1988 | 13 | 0 |
| 1989 | 15 | 0 |
| 1990 | 18 | 0 |
| 1991 | 13 | 0 |
| 1992 | 15 | 0 |
| 1993 | 7 | 0 |
| 1994 | 11 | 0 |
| 1995 | 13 | 0 |
| 1996 | 18 | 0 |
| 1997 | 16 | 0 |
| 1998 | 21 | 0 |
| 1999 | 18 | 0 |
| 2000 | 24 | 0 |
| 2001 | 19 | 14 |
| 2002 | 35 | 27 |
| 2003 | 27 | 20 |
| 2004 | 26 | 39 |
| 2005 | 30 | 29 |
| 2006 | 13 | 28 |
| 2007 | 25 | 29 |
| 2008 | 11 | 44 |
| 2009 | 22 | 38 |
| 2010 | 30 | 51 |
| 2011 | 31 | 39 |
| 2012 | 49 | 55 |
| 2013 | 36 | 62 |
| 2014 | 50 | 48 |
| 2015 | 72 | 86 |
| 2016 | 71 | 72 |
| 2017 | 70 | 66 |
| 2018 | 53 | 41 |
| 2019 | 56 | 49 |
| 2020 | 67 | 64 |
| 2021 | 56 | 46 |
| 2022 | 45 | 89 |
| 2023 | 68 | 75 |
| 2024 | 74 | 70 |
| 2025 | 62 | 52 |
| 2026 | 30 | 41 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Arrangement and method for automatically configuring a magnetic drive6 Oct 2026US 12,755,912 B2Siemens Aktiengesellschaft
- Overmolded electrical device with low electrical stress parting lines29 Sep 2026US 12,749,637 B2G & W Electric Company
- SF6 free gas insulated disconnector with limited arcing volume29 Sep 2026US 12,749,638 B2GE Vernova Infrastructure Technology LLC
- Vacuum switching unit and vacuum circuit breaker22 Sep 2026US 12,744,172 B2Siemens Energy Global GmbH & Co. KG
- Vacuum interrupter with vacuum device shield1 Sep 2026US 12,725,746 B2S&C Electric Company
- Switch pole for electrical systems8 Oct 2026US 2026/0311938 A1
- Apparatuses and methods for improved switchgear sensor data communication1 Oct 2026US 2026/0302107 A1Hubbell Incorporated
- Shape of insulator member of vacuum envelope of vacuum interrupter, and switchgear employing same24 Sep 2026US 2026/0290726 A1
- Non-metal shields and use of foamy materials in vacuum interrupter, and switchgear employing same24 Sep 2026US 2026/0290727 A1
- Capacitor harvester24 Sep 2026US 2026/0290728 A1
Most cited
By later US patents
- Arcing fault protection system for a switchgear enclosure127US 6,141,192 ASquare D Company · 2000
- High voltage vacuum type circuit interrupter121US 4,568,804 AJoslyn Mfg. and Supply Co. · 1986
- Molded pole automatic circuit recloser with bistable electromagnetic actuator116US 5,912,604 AABB Power T&D Company Inc. · 1999
- Encapsulated high voltage vacuum switches108US 5,808,258 AAmerace Corporation · 1998
- Hybrid medium voltage circuit breaker98US 5,155,315 AMerlin Gerin · 1992