H01H 33/24
Means for preventing discharge to non-current-carrying parts
Official title: Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
H01H33/24 (Means for preventing discharge to non-current-carrying parts) appears on 122 US grants and 59 published applications in this corpus.
Search patents in H01H- Granted patents
- 122
- Published applications
- 59
- Assignees
- 59
- Inventors
- 283
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 1 |
| 2003 | 2 | 0 |
| 2004 | 4 | 4 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 6 |
| 2008 | 0 | 3 |
| 2009 | 1 | 2 |
| 2010 | 6 | 5 |
| 2011 | 4 | 1 |
| 2012 | 1 | 1 |
| 2013 | 4 | 5 |
| 2014 | 3 | 3 |
| 2015 | 4 | 5 |
| 2016 | 5 | 5 |
| 2017 | 5 | 2 |
| 2018 | 4 | 2 |
| 2019 | 1 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 4 |
| 2025 | 0 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Motor assembly and circuit breaker comprising same3 Mar 2026US 12,567,545 B2Ls Electric Co., Ltd.
- Solid dielectric insulated switchgear10 Sep 2024US 12,087,523 B2G & W Electric Company
- Fixation system that serves to ground an insulated housing3 May 2022US 11,322,864 B2ABB Schweiz AG
- Electromechanical actuator and high voltage (HV) switch22 Mar 2022US 11,282,660 B2Carrier Kheops Bac
- High voltage electric power switch with anti-flashover nozzle4 Aug 2020US 10,734,175 B1Southern States, LLC
- Disconnector contact system with controlled discharge30 Apr 2026US 2026/0120967 A1Hitachi Energy Ltd
- Disconnector contact system with controlled discharge23 Apr 2026US 2026/0112551 A1Hitachi Energy Ltd
- Solid dielectric insulated switchgear26 Dec 2024US 2024/0429006 A1G & W Electric Company
- High voltage circuit breaker with particle trap5 Dec 2024US 2024/0404773 A1Hitachi Energy Ltd
- Gas insulated electrical switchgear for medium and high voltage electrical distribution networks16 May 2024US 2024/0162694 A1Ormazabal Y Cia, S.L.U.
Most cited
By later US patents
- Current interchange for vacuum capacitor switch56US 5,597,992 ACooper Industries, Inc. · 1997
- Solid dielectric encapsulated interrupter53US 6,888,086 B2Cooper Technologies Company · 2005
- Vertical antitracking skirts41US 5,747,765 ACooper Industries, Inc. · 1998
- Solid insulator-type vacuum switch gear35US 4,618,749 AVEB Otto Buchwitz Starkstrom Anlagebau Dresden · 1986
- Energy efficient floating head puffer interrupter26US 4,445,018 AMcGraw-Edison Company · 1984