H01H 33/022
Particular to three-phase circuit breakers
Official title: {particular to three-phase circuit breakers (synchronous switching H01H9/563)}
H01H33/022 (Particular to three-phase circuit breakers) appears on 221 US grants and 139 published applications in this corpus.
Search patents in H01H- Granted patents
- 221
- Published applications
- 139
- Assignees
- 96
- Inventors
- 459
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 10 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 8 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 1 | 2 |
| 2002 | 6 | 9 |
| 2003 | 7 | 2 |
| 2004 | 6 | 4 |
| 2005 | 5 | 5 |
| 2006 | 2 | 7 |
| 2007 | 5 | 5 |
| 2008 | 3 | 6 |
| 2009 | 2 | 3 |
| 2010 | 4 | 4 |
| 2011 | 1 | 6 |
| 2012 | 6 | 9 |
| 2013 | 4 | 9 |
| 2014 | 5 | 3 |
| 2015 | 14 | 9 |
| 2016 | 7 | 3 |
| 2017 | 1 | 0 |
| 2018 | 2 | 2 |
| 2019 | 6 | 4 |
| 2020 | 6 | 8 |
| 2021 | 12 | 8 |
| 2022 | 5 | 15 |
| 2023 | 14 | 8 |
| 2024 | 8 | 7 |
| 2025 | 3 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power source emulator and method for testing switchgear25 Nov 2025US 12,483,009 B2ModularMC, LLC
- Inline disconnect for multiphase electric utility line applications26 Aug 2025US 12,400,812 B2Southern Electrical Equipment Company
- Switch-fuse module8 Apr 2025US 12,272,510 B2ABB Schweiz AG
- Electrical switching arrangement31 Dec 2024US 12,183,524 B2Siemens Energy Global GmbH & Co. KG
- Drive unit for driving switching contacts of a high-voltage circuit breaker24 Sep 2024US 12,100,567 B2Siemens Energy Global GmbH & Co. KG
- Three-phase circuit breaker busbar11 Jun 2026US 2026/0162918 A1Vertiv Corporation
- Solid dielectric insulated switchgear26 Dec 2024US 2024/0429006 A1G & W Electric Company
- Transverse vacuum circuit breaker21 Nov 2024US 2024/0387123 A1Schneider Electric (Xiamen) Switchgear Equipment Co., Ltd.
- Switching device for a medium-voltage electrical circuit24 Oct 2024US 2024/0355563 A1Schneider Electric Industries SAS
- Electrical assembly24 Oct 2024US 2024/0355569 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Insulator integrated power supply218US 8,964,433 B2ABB Technology AG · 2015
- Medium tension circuit-breaker for indoor or outdoor use101US 5,350,892 AGEC Alsthom SA · 1994
- Sulfur hexafluoride isolating circuit-breaker and use thereof in prefabricated stations, substations, and bays94US 5,357,068 AGEC Alsthom SA · 1994
- Recloser means for reclosing interrupted high voltage electric circuit means66US 5,175,403 ACooper Power Systems, Inc. · 1992
- Modular, high-voltage, three phase recloser assembly54US 6,198,062 B1Joslyn Hi-Voltage Corporation · 2001