H02H 7/22
Emergency protective circuit arrangements specially adapted for specific types of electric machines
Official title: for distribution gear, e.g. bus-bar systems; for switching devices {(detecting mechanical or electrical defects in gas-insulated switchgears H02B13/065)}
H02H7/22 (Emergency protective circuit arrangements specially adapted for specific types of electric machines) appears on 658 US grants and 736 published applications in this corpus.
Search patents in H02H- Granted patents
- 658
- Published applications
- 736
- Assignees
- 397
- Inventors
- 1,788
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 6 | 0 |
| 1978 | 9 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 4 |
| 2002 | 7 | 4 |
| 2003 | 3 | 5 |
| 2004 | 5 | 4 |
| 2005 | 2 | 9 |
| 2006 | 3 | 5 |
| 2007 | 3 | 11 |
| 2008 | 3 | 5 |
| 2009 | 7 | 6 |
| 2010 | 7 | 6 |
| 2011 | 4 | 15 |
| 2012 | 8 | 14 |
| 2013 | 14 | 21 |
| 2014 | 16 | 27 |
| 2015 | 16 | 31 |
| 2016 | 17 | 25 |
| 2017 | 30 | 28 |
| 2018 | 16 | 57 |
| 2019 | 33 | 49 |
| 2020 | 44 | 62 |
| 2021 | 69 | 65 |
| 2022 | 60 | 62 |
| 2023 | 49 | 44 |
| 2024 | 56 | 50 |
| 2025 | 51 | 67 |
| 2026 | 33 | 60 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power supply control device and storage medium29 Sep 2026US 12,749,970 B2DENSO TEN Limited
- Systems and methods of decentralized control of a static transfer switch15 Sep 2026US 12,738,728 B2ABB Schweiz AG
- Fault clearing in electrical systems with injected signal15 Sep 2026US 12,738,735 B2Hamilton Sundstrand Corporation
- System and method for locating remote earth fault section in power grids1 Sep 2026US 12,724,060 B2Winter Brothers AB
- Electrical power transmission1 Sep 2026US 12,726,018 B2Enertechnos Limited
- Fire prevention management system for distribution board1 Oct 2026US 2026/0301554 A1
- Safety module for an electrical device, and method for operating same1 Oct 2026US 2026/0302764 A1Turck Holding GmbH
- Over voltage protection for a wireless power transfer system24 Sep 2026US 2026/0291209 A1Dolby Intellectual Property Licensing, LLC
- In-vehicle device, information processing method, and program24 Sep 2026US 2026/0291214 A1Autonetworks Technologies, Ltd.
- Integrated circuit24 Sep 2026US 2026/0291220 A1NXP B. V.
Most cited
By later US patents
- Monitoring diagnostic apparatus using neural network123US 5,419,197 AMitsubishi Denki Kabushiki Kaisha · 1995
- Sequence based network protector relay with forward overcurrent protection and antipumping feature90US 5,822,165 AEaton Corporation · 1998
- Contactor control system73US 4,922,363 AGeneral Electric Company · 1990
- Arc fault detection apparatus, method and system for an underground electrical conductor69US 7,319,574 B2Eaton Corporation · 2008
- Electrical extension cord with built-in safety protection58US 5,642,248 A1997