H01H 9/56
For ensuring operation of the switch at a predetermined point in the
Official title: for ensuring operation of the switch at a predetermined point in the AC cycle
H01H9/56 (For ensuring operation of the switch at a predetermined point in the) appears on 345 US grants and 298 published applications in this corpus.
Search patents in H01H- Granted patents
- 345
- Published applications
- 298
- Assignees
- 149
- Inventors
- 605
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 8 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 0 |
| 2002 | 7 | 1 |
| 2003 | 5 | 5 |
| 2004 | 3 | 7 |
| 2005 | 6 | 7 |
| 2006 | 4 | 6 |
| 2007 | 5 | 4 |
| 2008 | 5 | 8 |
| 2009 | 4 | 5 |
| 2010 | 5 | 9 |
| 2011 | 9 | 12 |
| 2012 | 4 | 16 |
| 2013 | 13 | 14 |
| 2014 | 4 | 15 |
| 2015 | 14 | 15 |
| 2016 | 13 | 23 |
| 2017 | 22 | 17 |
| 2018 | 18 | 15 |
| 2019 | 26 | 21 |
| 2020 | 12 | 21 |
| 2021 | 13 | 18 |
| 2022 | 25 | 11 |
| 2023 | 19 | 17 |
| 2024 | 14 | 15 |
| 2025 | 9 | 11 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of performing circuit opening and closing operation, computer program, control system and power system25 Aug 2026US 12,717,285 B2ABB Schweiz AG
- Reducing transformer inrush current14 Apr 2026US 12,603,494 B2ABB Schweiz AG
- Point on wave polarity detection method for saturation mitigation17 Mar 2026US 12,580,378 B2S&C Electric Company
- Reducing inrush current to a capacitor bank24 Feb 2026US 12,562,564 B2ABB Schweiz AG
- Hybrid circuit breaker and pre-charge control method6 Jan 2026US 12,519,303 B2Delta Electronics, Inc.
- Circuit breaker device and method27 Aug 2026US 2026/0254225 A1Siemens Aktiengesellschaft
- Circuit breaker device and method2 Jul 2026US 2026/0188994 A1Siemens Aktiengesellschaft
- Switch With Point On Wave Closing11 Jun 2026US 2026/0163352 A1S&C Electric Company
- Systems and methods to protect a mems relay switch system23 Apr 2026US 2026/0112884 A1Menlo Microsystems, Inc.
- System and method for point on wave closing of a vacuum interrupter29 Jan 2026US 2026/0031294 A1S&C Electric Company
Most cited
By later US patents
- Three-way switch for home automation apparatus and method228US 8,373,313 B2HomeRun Holdings Corporation · 2013
- Circuit breaker with integrated control features116US 5,875,087 A1999
- Adaptive sequential controller79US 5,361,184 AThe Board of Regents of the University of Washington · 1994
- Zero cross relay actuation method and system implementing same77US 6,233,132 B1Ranco Incorporated of Delaware · 2001
- Contactor control system73US 4,922,363 AGeneral Electric Company · 1990