H01H 9/0072
Particular to three-phase switches
Official title: {particular to three-phase switches (synchronous switching H01H9/563)}
H01H9/0072 (Particular to three-phase switches) appears on 70 US grants and 40 published applications in this corpus.
Search patents in H01H- Granted patents
- 70
- Published applications
- 40
- Assignees
- 34
- Inventors
- 162
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 3 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 1 | 4 |
| 2012 | 3 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 4 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 4 |
| 2019 | 7 | 2 |
| 2020 | 3 | 1 |
| 2021 | 2 | 4 |
| 2022 | 2 | 6 |
| 2023 | 2 | 4 |
| 2024 | 5 | 0 |
| 2025 | 4 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Three-phase arc quenching device with two pistons21 Oct 2025US 12,451,302 B2ABB Schweiz AG
- On-load tap changer18 Mar 2025US 12,255,035 B2Maschinenfabrik Reinhausen GmbH
- Device for door and phase segregation in molded case circuit breakers25 Feb 2025US 12,237,131 B2ABB AB
- Protection unit for control/command units of an electrical enclosure7 Jan 2025US 12,191,104 B2Schneider Electric Industries SAS
- Current balancing for automatic transfer switches24 Dec 2024US 12,176,170 B2Cummins Power Generation IP, Inc.
- Alternating Current Disconnector for Subsea Operation26 Mar 2026US 2026/0088234 A1ABB Schweiz AG
- Medium-voltage vacuum circuit breaker10 Apr 2025US 2025/0118510 A1ABB Schweiz AG
- Automatic transfer switch with n-phase overlapping structure6 Jul 2023US 2023/0215667 A1O-Sung Electric Machinery Co., Ltd.
- Protection unit for control/command units of an electrical enclosure22 Jun 2023US 2023/0197369 A1Schneider Electric Industries SAS
- Three-phase arc quenching device with two pistons22 Jun 2023US 2023/0197371 A1ABB Schweiz AG
Most cited
By later US patents
- Compact electric safety switch97US 4,675,481 AGeneral Electric Company · 1987
- Limiting circuit breaker87US 4,952,897 A1990
- Compact molded case circuit breaker having anti-turn terminal connectors26US 5,117,211 AGeneral Electric Company · 1992
- Electrical switches16US 4,748,431 AHarvey Hubbell Incorporated · 1988
- Phase flux barriers for transfer switch16US 6,919,518 B2Onan Corporation · 2005