H02M 1/342
Active non-dissipative snubbers
Official title: {Active non-dissipative snubbers}
H02M1/342 (Active non-dissipative snubbers) appears on 553 US grants and 558 published applications in this corpus.
Search patents in H02M- Granted patents
- 553
- Published applications
- 558
- Assignees
- 324
- Inventors
- 1,073
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 15 | 0 |
| 2000 | 11 | 0 |
| 2001 | 4 | 5 |
| 2002 | 15 | 8 |
| 2003 | 12 | 10 |
| 2004 | 9 | 6 |
| 2005 | 8 | 14 |
| 2006 | 11 | 10 |
| 2007 | 8 | 7 |
| 2008 | 3 | 6 |
| 2009 | 6 | 12 |
| 2010 | 5 | 10 |
| 2011 | 7 | 17 |
| 2012 | 10 | 24 |
| 2013 | 20 | 13 |
| 2014 | 17 | 17 |
| 2015 | 16 | 16 |
| 2016 | 11 | 12 |
| 2017 | 20 | 17 |
| 2018 | 26 | 31 |
| 2019 | 39 | 39 |
| 2020 | 38 | 40 |
| 2021 | 41 | 41 |
| 2022 | 34 | 48 |
| 2023 | 37 | 44 |
| 2024 | 37 | 49 |
| 2025 | 36 | 39 |
| 2026 | 23 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Non-isolated zero current and voltage transition technique (ZCVTT)29 Sep 2026US 12,749,966 B2Power Switching LLC
- Method for operating in burst mode active clamp flyback converters and corresponding active clamp flyback converter apparatus1 Sep 2026US 12,726,129 B2STMicroelectronics S,r.l.
- Controller of an auxiliary switch used in a flyback circuit and control method thereof18 Aug 2026US 12,712,458 B2Hangzhou MPS Semiconductor Technology Ltd.
- Controller for resonant power converter, resonant power converter and method of operating a resonant power converter16 Jun 2026US 12,658,791 B2Infineon Technologies Austria AG
- Active clamp flyback converter with accurate current sense and the method thereof9 Jun 2026US 12,651,971 B2Chengdu Monolithic Power Systems Co., Ltd.
- A method of operating a dc/dc converter8 Oct 2026US 2026/0312503 A1BRUSA HyPower AG
- Bidirectional dc-to-dc power converter circuits and systems20 Aug 2026US 2026/0246391 A1Transportation IP Holdings, LLC
- Dc converter with active clamping13 Aug 2026US 2026/0238111 A1
- Stacked output driver switching power supply with active clamping and selective bypass of pre-charge circuits13 Aug 2026US 2026/0238113 A1Cirrus Logic International Semiconductor Ltd.
- Soft Switching Two Transistor Forward With Dual Clamp For High Voltage Bus And Large Input Voltage Range13 Aug 2026US 2026/0238134 A1Rompower Technology Holdings, LLC
Most cited
By later US patents
- DC to DC converter and power management system400US 6,628,011 B2International Power System, Inc. · 2003
- Zero voltage switching cells for power converters215US 6,452,814 B1Technical Witts, Inc. · 2002
- DC-DC converters198US 5,636,107 AInternational Power Devices, Inc. · 1997
- White light-emitting-diode lamp driver based on multiple output converter with output current mode control197US 6,369,525 B1Philips Electronics North America Corporation · 2002
- Current source wave voltage inverter voltage-clamping and soft-switching techniques, and fuel cell system using the same182US 7,262,979 B2Yuan Ze University · 2007