H02M 1/34
Snubber circuits
H02M1/34 (Snubber circuits) appears on 1,344 US grants and 1,406 published applications in this corpus.
Search patents in H02M- Granted patents
- 1,344
- Published applications
- 1,406
- Assignees
- 668
- Inventors
- 2,729
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 11 | 0 |
| 1998 | 17 | 0 |
| 1999 | 30 | 0 |
| 2000 | 21 | 0 |
| 2001 | 16 | 8 |
| 2002 | 26 | 16 |
| 2003 | 21 | 16 |
| 2004 | 13 | 19 |
| 2005 | 19 | 25 |
| 2006 | 16 | 23 |
| 2007 | 18 | 16 |
| 2008 | 9 | 19 |
| 2009 | 15 | 20 |
| 2010 | 14 | 23 |
| 2011 | 19 | 40 |
| 2012 | 27 | 61 |
| 2013 | 39 | 29 |
| 2014 | 45 | 52 |
| 2015 | 32 | 51 |
| 2016 | 48 | 53 |
| 2017 | 67 | 59 |
| 2018 | 70 | 85 |
| 2019 | 98 | 95 |
| 2020 | 88 | 93 |
| 2021 | 81 | 114 |
| 2022 | 91 | 124 |
| 2023 | 86 | 113 |
| 2024 | 91 | 104 |
| 2025 | 100 | 79 |
| 2026 | 60 | 69 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-isolated zero current and voltage transition technique (ZCVTT)29 Sep 2026US 12,749,966 B2Power Switching LLC
- Power converter and method of controlling the same22 Sep 2026US 12,744,457 B2Chicony Power Technology Co., Ltd.
- 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.
- Switch mode electrical power converter15 Sep 2026US 12,738,856 B2Differential Power, Sl
- A method of operating a dc/dc converter8 Oct 2026US 2026/0312503 A1BRUSA HyPower AG
- Power protecting device and controlling method thereof24 Sep 2026US 2026/0291375 A1AcLeap Power Inc.
- Flyback converter with improved light load efficiency24 Sep 2026US 2026/0291394 A1Apple Inc.
- Power converter, method and apparatus for insulation detection thereof17 Sep 2026US 2026/0276690 A1Sungrow Power Supply Co., Ltd.
- Configurable fast transition pulse power supply unit3 Sep 2026US 2026/0261256 A1AES Global Holdings PTE Ltd.
Most cited
By later US patents
- DC to DC converter and power management system400US 6,628,011 B2International Power System, Inc. · 2003
- High-performance solar photovoltaic (PV) energy conversion system266US 7,479,774 B2Yuan Ze University · 2009
- Zero voltage switching244US 8,111,052 B2Solaredge Technologies Ltd. · 2012
- Snubber circuit for a power converter238US 7,385,833 B2Astec International Limited · 2008
- Power electronic interface circuits for batteries and ultracapacitors in electric vehicles and battery storage systems219US 5,710,699 AGeneral Electric Company · 1998