H02H 7/1222
Responsive to abnormalities in the input circuit
Official title: {responsive to abnormalities in the input circuit, e.g. transients in the DC input}
H02H7/1222 (Responsive to abnormalities in the input circuit) appears on 133 US grants and 153 published applications in this corpus.
Search patents in H02H- Granted patents
- 133
- Published applications
- 153
- Assignees
- 118
- Inventors
- 389
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 3 |
| 2004 | 2 | 1 |
| 2005 | 2 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 5 |
| 2008 | 0 | 4 |
| 2009 | 3 | 4 |
| 2010 | 3 | 5 |
| 2011 | 4 | 6 |
| 2012 | 4 | 2 |
| 2013 | 5 | 6 |
| 2014 | 5 | 10 |
| 2015 | 3 | 9 |
| 2016 | 4 | 7 |
| 2017 | 15 | 10 |
| 2018 | 10 | 11 |
| 2019 | 11 | 14 |
| 2020 | 9 | 8 |
| 2021 | 9 | 10 |
| 2022 | 4 | 5 |
| 2023 | 6 | 8 |
| 2024 | 10 | 10 |
| 2025 | 5 | 9 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Circuit protection method, system and apparatus2 Jun 2026US 12,646,923 B2Altenergy Power System Inc.
- Power converter and protection method for short circuit to ground on direct current side thereof3 Mar 2026US 12,567,748 B2Huawei Digital Power Technologies Co., Ltd.
- Control apparatus and power conversion apparatus in photovoltaic system10 Feb 2026US 12,548,996 B2Toshiba Mitsubishi-Electric Industrial Systems Corporation
- Motor drive device provided with charging control unit13 Jan 2026US 12,525,782 B2Fanuc Corporation
- Safe shutdown of an inverter30 Dec 2025US 12,512,829 B2ZF Friedrichshafen AG
- Power converter arrangement with dc link6 Aug 2026US 2026/0229875 A1Siemens Aktiengesellschaft
- Module level power electronics, diagnosis management system, and diagnosis management method6 Aug 2026US 2026/0229887 A1Hanwha Solutions Corporation
- Power supply switching device, drive control apparatus, and moving body23 Jul 2026US 2026/0208601 A1Mitsubishi Electric Corporation
- Switched mode power supply circuit having an electrostatic discharge protection circuit and method30 Apr 2026US 2026/0121517 A1Nexperia B. V.
- Short circuit protection of power switches25 Dec 2025US 2025/0392116 A1Power Integrations, Inc.
Most cited
By later US patents
- Apparatus and method of detecting ground fault in power conversion system248US 6,927,955 B2Canon Kabushiki Kaisha · 2005
- Electric vehicle drive train with contactor protection94US 5,369,540 AGeneral Electric Company · 1994
- Circuit for blocking a semiconductor switching device on overcurrent76US 6,351,359 B1Danfoss A/S · 2002
- Apparatus for protection of power-electronics in series compensating systems29US 6,021,035 AGeneral Electric Company · 2000
- Apparatus for protection of power-electronics in series compensating systems27US 5,734,256 AGeneral Electric Company · 1998