H01H 33/662
Housings or protective screens
H01H33/662 (Housings or protective screens) appears on 517 US grants and 465 published applications in this corpus.
Search patents in H01H- Granted patents
- 517
- Published applications
- 465
- Assignees
- 136
- Inventors
- 936
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 12 | 0 |
| 1985 | 9 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 7 |
| 2002 | 7 | 9 |
| 2003 | 10 | 5 |
| 2004 | 6 | 14 |
| 2005 | 10 | 13 |
| 2006 | 3 | 6 |
| 2007 | 9 | 14 |
| 2008 | 2 | 14 |
| 2009 | 5 | 9 |
| 2010 | 11 | 15 |
| 2011 | 12 | 12 |
| 2012 | 11 | 15 |
| 2013 | 12 | 27 |
| 2014 | 17 | 16 |
| 2015 | 24 | 23 |
| 2016 | 22 | 27 |
| 2017 | 21 | 19 |
| 2018 | 21 | 18 |
| 2019 | 14 | 22 |
| 2020 | 30 | 25 |
| 2021 | 22 | 21 |
| 2022 | 14 | 27 |
| 2023 | 24 | 26 |
| 2024 | 28 | 31 |
| 2025 | 28 | 30 |
| 2026 | 11 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Overmolded electrical device with low electrical stress parting lines29 Sep 2026US 12,749,637 B2G & W Electric Company
- Vacuum interrupter with vacuum device shield1 Sep 2026US 12,725,746 B2S&C Electric Company
- Vacuum circuit breaker25 Aug 2026US 12,718,997 B2Mitsubishi Electric Corporation
- Vacuum interrupter25 Aug 2026US 12,718,998 B2Mitsubishi Electric Corporation
- Capacitor harvester14 Jul 2026US 12,683,104 B2Hubbell 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
- 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
Most cited
By later US patents
- 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
- Encapsulated vacuum interrupter and method of making same81US 5,917,167 ACooper Industries, Inc. · 1999
- Protective switch device and operating mechanism therefor63US 4,124,790 AMcGraw-Edison Company · 1978