H02M 1/40
Means for preventing magnetic saturation
H02M1/40 (Means for preventing magnetic saturation) appears on 282 US grants and 262 published applications in this corpus.
Search patents in H02M- Granted patents
- 282
- Published applications
- 262
- Assignees
- 192
- Inventors
- 585
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 6 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 2 | 3 |
| 2003 | 4 | 3 |
| 2004 | 2 | 0 |
| 2005 | 0 | 8 |
| 2006 | 2 | 3 |
| 2007 | 2 | 2 |
| 2008 | 5 | 6 |
| 2009 | 1 | 1 |
| 2010 | 5 | 6 |
| 2011 | 5 | 10 |
| 2012 | 6 | 6 |
| 2013 | 9 | 19 |
| 2014 | 8 | 7 |
| 2015 | 15 | 13 |
| 2016 | 12 | 8 |
| 2017 | 3 | 5 |
| 2018 | 10 | 13 |
| 2019 | 16 | 17 |
| 2020 | 12 | 13 |
| 2021 | 15 | 19 |
| 2022 | 19 | 26 |
| 2023 | 25 | 26 |
| 2024 | 14 | 29 |
| 2025 | 24 | 9 |
| 2026 | 15 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Detecting transformer saturation in switched-mode power supplies15 Sep 2026US 12,738,852 B2STMicroelectronics S,r.l.
- Resonant power conversion circuit and control method thereof for balancing duty cycles of high-side transistor and low-side transistor8 Sep 2026US 12,732,098 B2Richtek Technology Corporation
- Method of transient-free transformer energization and black start using inverter based resources1 Sep 2026US 12,726,031 B2The Florida State University Research Foundation, Inc.
- Switching control circuit and power factor correction circuit7 Jul 2026US 12,676,546 B2Fuji Electric Co., Ltd.
- Method for preventing saturation of a transformer during fast voltage changes and a control system thereof23 Jun 2026US 12,665,496 B2ABB Schweiz AG
- Switching control circuit and power factor correction circuit24 Sep 2026US 2026/0291377 A1Fuji Electric Co., Ltd.
- Method of transient-free transformer energization and black start using inverter based resources10 Sep 2026US 2026/0269624 A1The Florida State University Research Foundation, Inc.
- Method of transient-free transformer energization and black start using inverter based resources3 Sep 2026US 2026/0261127 A1The Florida State University Research Foundation, Inc.
- Direct current balancing using a zero voltage detection signal30 Jul 2026US 2026/0221888 A1
- Single stage sepic power converter with power factor correction25 Jun 2026US 2026/0180465 A1Renesas Design (UK) Limited
Most cited
By later US patents
- Systems and methods for providing positioning freedom, and support of different voltages, protocols, and power levels in a wireless power system255US 9,178,369 B2Mojo Mobility, Inc. · 2015
- Systems and method for positioning freedom, and support of different voltages, protocols, and power levels in a wireless power system194US 9,106,083 B2Mojo Mobility, Inc. · 2015
- Multi-dimensional inductive charger and applications thereof157US 9,112,364 B2Mojo Mobility, Inc. · 2015
- Intelligent charging of multiple electric or electronic devices with a multi-dimensional inductive charger141US 9,112,363 B2Mojo Mobility, Inc. · 2015
- Methods for improved transfer efficiency in a multi-dimensional inductive charger113US 9,112,362 B2Mojo Mobility, Inc. · 2015