H01H 33/596
For interrupting dc
Official title: {for interrupting DC}
H01H33/596 (For interrupting dc) appears on 341 US grants and 329 published applications in this corpus.
Search patents in H01H- Granted patents
- 341
- Published applications
- 329
- Assignees
- 146
- Inventors
- 728
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 3 |
| 2009 | 1 | 2 |
| 2010 | 2 | 4 |
| 2011 | 2 | 3 |
| 2012 | 4 | 8 |
| 2013 | 6 | 18 |
| 2014 | 12 | 22 |
| 2015 | 11 | 19 |
| 2016 | 17 | 22 |
| 2017 | 20 | 19 |
| 2018 | 15 | 26 |
| 2019 | 36 | 22 |
| 2020 | 21 | 35 |
| 2021 | 29 | 24 |
| 2022 | 29 | 24 |
| 2023 | 17 | 17 |
| 2024 | 16 | 27 |
| 2025 | 20 | 16 |
| 2026 | 17 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrical protection devices comprising an integrated switching module6 Oct 2026US 12,755,918 B2Schneider Electric Industries SAS
- Device and method for disconnecting a high-voltage direct electric current with a fuse, and oscillating-current overload system25 Aug 2026US 12,719,257 B2Supergrid Institute
- Electrical switching arrangement11 Aug 2026US 12,706,257 B2Eaton Intelligent Power Limited
- Hybrid circuit breaker using a transient commutation current injector circuit11 Aug 2026US 12,706,451 B2Illinois Institute of Technology
- Half-bridge circuit arrangement and method for actuation4 Aug 2026US 12,700,553 B2Semikron Danfoss Elektronik GmbH & Co. KG
- Electrical installation with means for extinguishing series electric arcs, in particular in a contactor16 Jul 2026US 2026/0200329 A1Safran Electrical & Power
- Electro-mechanical circuit interrupter16 Jul 2026US 2026/0204893 A1Leach International Corporation
- Electrical installation with means for switching series electric arcs9 Jul 2026US 2026/0192677 A1Safran Electrical & Power
- Semiconductor-based dc transfer switch25 Jun 2026US 2026/0179860 A1Siemens Industry, Inc.
- Low-voltage protective arrangement25 Jun 2026US 2026/0180430 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Direct-current breaker for high power for connection into a direct-current carrying high-voltage line251US 5,517,378 AAsea Brown Boveri AG · 1996
- Commutation type DC breaker77US 5,452,170 AHitachi, Ltd. · 1995
- Direct current switching apparatus45US 5,004,874 AEaton Corporation · 1991
- Hybrid solid state/mechanical switch with failure protection43US 4,618,906 AWestinghouse Electric Corp. · 1986
- Zero-current arc-suppression dc circuit breaker43US 4,740,858 AMitsubishi Denki Kabushiki Kaisha · 1988