H01H 33/593
For ensuring operation of the switch at a predetermined point of the
Official title: {for ensuring operation of the switch at a predetermined point of the AC cycle (for multipolar switches H01H9/563)}
H01H33/593 (For ensuring operation of the switch at a predetermined point of the) appears on 82 US grants and 73 published applications in this corpus.
Search patents in H01H- Granted patents
- 82
- Published applications
- 73
- Assignees
- 37
- Inventors
- 145
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 6 |
| 2014 | 3 | 1 |
| 2015 | 3 | 6 |
| 2016 | 4 | 3 |
| 2017 | 2 | 4 |
| 2018 | 3 | 4 |
| 2019 | 6 | 2 |
| 2020 | 6 | 14 |
| 2021 | 2 | 1 |
| 2022 | 10 | 9 |
| 2023 | 7 | 6 |
| 2024 | 6 | 5 |
| 2025 | 5 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Circuit breaker device and method4 Nov 2025US 12,462,994 B2Siemens Akteingesellschaft
- System and method for point on wave closing of a vacuum interrupter14 Oct 2025US 12,444,558 B2S&C Electric Company
- Determination of electrical making instants using load voltage for coupled loads19 Aug 2025US 12,394,578 B2Hitachi Energy Ltd
- Zero crossing contactor and method of operating27 May 2025US 12,315,691 B2GE Aviation Systems LLC
- Electric switching device18 Feb 2025US 12,230,460 B2Hitachi Energy Ltd
- System and method for point on wave closing of a vacuum interrupter29 Jan 2026US 2026/0031294 A1S&C Electric Company
- Zero crossing contactor and method of operating19 Dec 2024US 2024/0420907 A1GE Aviation Systems LLC
- Intelligent circuit breakers with solid-state bidirectional switches10 Oct 2024US 2024/0339825 A1Amber Semiconductor, Inc.
- Determination of electrical making instants using load voltage for coupled loads1 Aug 2024US 2024/0258046 A1Hitachi Energy Ltd
- System and method for point on wave closing of a vacuum interrupter9 May 2024US 2024/0153725 A1S&C Electric Company
Most cited
By later US patents
- Intelligent circuit breaker providing synchronous switching and condition monitoring86US 5,638,296 AABB Power T&D Company Inc. · 1997
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- Intelligent circuit breaker providing synchronous switching and condition monitoring54US 5,629,869 AABB Power T&D Company Inc. · 1997
- Control method and device for a switchgear actuator41US 6,331,687 B1Cooper Industries, Inc. · 2001
- Electrical switchgear with synchronous control system and actuator34US 6,291,911 B1Cooper Industries, Inc. · 2001