H02M 1/346
Passive non-dissipative snubbers
Official title: {Passive non-dissipative snubbers}
H02M1/346 (Passive non-dissipative snubbers) appears on 314 US grants and 311 published applications in this corpus.
Search patents in H02M- Granted patents
- 314
- Published applications
- 311
- Assignees
- 237
- Inventors
- 737
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 11 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 1 |
| 2002 | 7 | 6 |
| 2003 | 4 | 1 |
| 2004 | 2 | 10 |
| 2005 | 7 | 6 |
| 2006 | 5 | 6 |
| 2007 | 3 | 4 |
| 2008 | 4 | 3 |
| 2009 | 3 | 1 |
| 2010 | 2 | 6 |
| 2011 | 1 | 7 |
| 2012 | 7 | 10 |
| 2013 | 7 | 4 |
| 2014 | 7 | 19 |
| 2015 | 7 | 15 |
| 2016 | 16 | 10 |
| 2017 | 14 | 14 |
| 2018 | 14 | 12 |
| 2019 | 20 | 23 |
| 2020 | 20 | 27 |
| 2021 | 19 | 27 |
| 2022 | 27 | 30 |
| 2023 | 19 | 23 |
| 2024 | 21 | 16 |
| 2025 | 15 | 12 |
| 2026 | 11 | 18 |
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
- Low loss snubber circuit15 Sep 2026US 12,738,836 B2AES Global Holdings PTE Ltd.
- Semiconductor oscillation suppression circuit15 Sep 2026US 12,738,854 B2Fuji Electric Co., Ltd.
- Power conversion device11 Aug 2026US 12,706,530 B2Hitachi Astemo, Ltd.
- Charge pump circuit28 Apr 2026US 12,614,980 B2Toyota Jidosha Kabushiki Kaisha
- Phase-shift modulated full-bridge power inverters and methods of operation thereof27 Aug 2026US 2026/0254370 A1Nanyang Technological University
- Dc converter with active clamping13 Aug 2026US 2026/0238111 A1
- Power converter and controlling method thereof and controller23 Jul 2026US 2026/0213640 A1Chicony Power Technology Co., Ltd.
- Current resonant dc/dc converter23 Jul 2026US 2026/0213651 A1Nichicon Corporation
- Voltage overshoot mitigation2 Jul 2026US 2026/0189130 A1Intel Corporation
Most cited
By later US patents
- High-performance solar photovoltaic (PV) energy conversion system266US 7,479,774 B2Yuan Ze University · 2009
- Snubber circuit for a power converter238US 7,385,833 B2Astec International Limited · 2008
- Circuit for dimming compact fluorescent lamps154US 5,173,643 ALutron Electronics Co., Inc. · 1992
- Lossless switching DC-to-DC converter77US 6,462,962 B12002
- Lossless snubber circuit for use in power converters75US 5,636,114 AElectronic Measurements, Inc. · 1997