H02M 3/33576
Having at least one active switching element at the secondary side of
Official title: {having at least one active switching element at the secondary side of an isolation transformer}
H02M3/33576 (Having at least one active switching element at the secondary side of) appears on 4,285 US grants and 4,812 published applications in this corpus.
Search patents in H02M- Granted patents
- 4,285
- Published applications
- 4,812
- Assignees
- 1,274
- Inventors
- 6,660
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 12 | 0 |
| 1994 | 15 | 0 |
| 1995 | 11 | 0 |
| 1996 | 19 | 0 |
| 1997 | 16 | 0 |
| 1998 | 25 | 0 |
| 1999 | 34 | 0 |
| 2000 | 44 | 0 |
| 2001 | 66 | 19 |
| 2002 | 68 | 50 |
| 2003 | 46 | 47 |
| 2004 | 58 | 55 |
| 2005 | 36 | 65 |
| 2006 | 58 | 81 |
| 2007 | 53 | 55 |
| 2008 | 48 | 78 |
| 2009 | 58 | 80 |
| 2010 | 61 | 62 |
| 2011 | 71 | 98 |
| 2012 | 58 | 80 |
| 2013 | 65 | 89 |
| 2014 | 72 | 168 |
| 2015 | 129 | 207 |
| 2016 | 177 | 206 |
| 2017 | 227 | 201 |
| 2018 | 278 | 278 |
| 2019 | 305 | 295 |
| 2020 | 331 | 348 |
| 2021 | 279 | 367 |
| 2022 | 325 | 402 |
| 2023 | 341 | 365 |
| 2024 | 304 | 418 |
| 2025 | 328 | 374 |
| 2026 | 229 | 324 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Charging system, charging method, and vehicle6 Oct 2026US 12,756,211 B2Shinry Technologies Co., Ltd.
- Systems and methods for inverter and DC/DC converter operation6 Oct 2026US 12,756,321 B2Schneider Electric It Corporation
- Fabrication trade-off based optimal synthesis of winding configurations for planar transformer in capacitor-inductor-inductor-capacitor (CLLC) direct current (DC)-DC converter6 Oct 2026US 12,756,322 B2Arizona Board of Regents on behalf of Arizona State University
- Switching power supply device with synchronous rectification6 Oct 2026US 12,756,323 B2Mitsumi Electric Co., Ltd.
- Switch mode power converter with adaptive gate voltage regulation for fast turn-off of synchronous rectifier6 Oct 2026US 12,756,324 B2Alpha and Omega Semiconductor International LP
- Synchronous rectification driving method and apparatus, and device and direct-current converter8 Oct 2026US 2026/0312479 A1Vertiv Corporation
- Multi-level structures and methods for switched-mode power supplies8 Oct 2026US 2026/0312495 A1Murata Manufacturing Co., Ltd.
- A method of operating a dc/dc converter8 Oct 2026US 2026/0312503 A1BRUSA HyPower AG
- Multiport active bridge (mab) converter with equalized leakage inductances8 Oct 2026US 2026/0312504 A1Hitachi Energy Ltd
- Flexible powering architectures1 Oct 2026US 2026/0302827 A1Alpha Technologies Inc.
Most cited
By later US patents
- Contactless electrical energy transmission system425US 6,301,128 B1Delta Electronics, Inc. · 2001
- Adaptive inductive power supply393US 7,212,414 B2Access Business Group International LLC · 2007
- Solar array inverter with maximum power tracking381US 7,193,872 B22007
- Uninterruptible power supply with direction of DC electrical energy depending on predetermined ratio303US 5,978,236 ASilverline Power Conversion LLC · 1999
- Adaptive inductive power supply286US 7,639,514 B2Access Business Group International LLC · 2009