H02H 7/268
For dc systems
Official title: {for DC systems}
H02H7/268 (For dc systems) appears on 270 US grants and 318 published applications in this corpus.
Search patents in H02H- Granted patents
- 270
- Published applications
- 318
- Assignees
- 174
- Inventors
- 786
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 3 |
| 2008 | 0 | 1 |
| 2009 | 2 | 7 |
| 2010 | 2 | 2 |
| 2011 | 4 | 0 |
| 2012 | 2 | 5 |
| 2013 | 3 | 11 |
| 2014 | 9 | 15 |
| 2015 | 10 | 15 |
| 2016 | 8 | 15 |
| 2017 | 15 | 13 |
| 2018 | 12 | 27 |
| 2019 | 14 | 14 |
| 2020 | 23 | 22 |
| 2021 | 25 | 25 |
| 2022 | 23 | 36 |
| 2023 | 23 | 28 |
| 2024 | 33 | 22 |
| 2025 | 26 | 27 |
| 2026 | 12 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- DC fault management in electrical power system6 Oct 2026US 12,756,177 B2Hitachi Energy Ltd
- Bi-directional solid-state DC circuit breaker with breaking speed control15 Sep 2026US 12,738,436 B2Hong Kong Applied Science and Technology Research Institute Company Limited
- Photovoltaic power generation system and fault protection method and device thereof, combiner box, and inverter11 Aug 2026US 12,706,461 B2Sungrow Power Supply Co., Ltd.
- Hybrid fault protection circuits for high-power cyclical loads2 Jun 2026US 12,646,920 B2Terminal Power LLC
- Device and method for safety switch off of an electrical consumer in a vehicle19 May 2026US 12,633,485 B2Elmos Semiconductor AG
- Short-circuit protection with a semiconductor switch27 Aug 2026US 2026/0249701 A1Siemens Mobility GmbH
- Method for balancing, a balancing circuit and an insulation monitoring device for an ungrounded direct-voltage power supply system27 Aug 2026US 2026/0254230 A1Bender GmbH & Co. KG
- Electrical assembly and method20 Aug 2026US 2026/0246259 A1Lear Corporation
- Systems and method for fault protection13 Aug 2026US 2026/0237993 A1GE Aviation Systems LLC
- Power converter arrangement with dc link6 Aug 2026US 2026/0229875 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Power supply system having semiconductor active fuse37US 6,269,011 B1Yazaki Corporation · 2001
- Potential arc fault detection and suppression29US 8,891,211 B22014
- DC power supply circuit23US 5,576,580 AHitachi, Ltd. · 1996
- Ground fault detector for vehicle21US 7,292,042 B2Nissan Motor Co., Ltd. · 2007
- HVDC switchyard and an HVDC switchyard system15US 8,803,358 B2ABB Technology AG · 2014