H02M 1/4258
Using a single converter stage both for correction of ac input power
Official title: {using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage (H02M1/4241 takes precedence)}
H02M1/4258 (Using a single converter stage both for correction of ac input power) appears on 747 US grants and 743 published applications in this corpus.
Search patents in H02M- Granted patents
- 747
- Published applications
- 743
- Assignees
- 382
- Inventors
- 1,259
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 8 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 16 | 0 |
| 1998 | 12 | 0 |
| 1999 | 12 | 0 |
| 2000 | 21 | 0 |
| 2001 | 14 | 1 |
| 2002 | 11 | 12 |
| 2003 | 13 | 14 |
| 2004 | 12 | 11 |
| 2005 | 11 | 12 |
| 2006 | 8 | 11 |
| 2007 | 11 | 5 |
| 2008 | 5 | 7 |
| 2009 | 11 | 7 |
| 2010 | 6 | 13 |
| 2011 | 4 | 15 |
| 2012 | 14 | 30 |
| 2013 | 14 | 45 |
| 2014 | 27 | 61 |
| 2015 | 48 | 54 |
| 2016 | 62 | 44 |
| 2017 | 47 | 38 |
| 2018 | 59 | 53 |
| 2019 | 47 | 54 |
| 2020 | 35 | 31 |
| 2021 | 36 | 38 |
| 2022 | 29 | 23 |
| 2023 | 31 | 44 |
| 2024 | 27 | 70 |
| 2025 | 55 | 25 |
| 2026 | 21 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Systems and methods for active discharge for inverter for electric vehicle22 Sep 2026US 12,745,369 B2BorgWarner US Technologies LLC
- Digital isolator9 Jun 2026US 12,651,963 B2Silergy Semiconductor Technology (Hangzhou) LTD
- Systems and methods for power module for inverter for electric vehicle9 Jun 2026US 12,652,781 B2BorgWarner US Technologies LLC
- Systems and methods for sensing temperature of inverter for electric vehicle2 Jun 2026US 12,647,020 B2BorgWarner US Technologies LLC
- Ac-to-dc voltage converter1 Oct 2026US 2026/0302934 A1
- An ac-dc switch mode electrical power converter24 Sep 2026US 2026/0291378 A1Differential Power, Sl
- Ac to dc power conversion method and system10 Sep 2026US 2026/0269739 A1The Queen's University of Belfast
- Systems and methods for power module for inverter for electric vehicle10 Sep 2026US 2026/0271237 A1BorgWarner US Technologies LLC
- High-power-density dimming power supply and control method thereof13 Aug 2026US 2026/0239509 A1Zhuhai Shengchang Electronics Co., Ltd.
Most cited
By later US patents
- System and method for input current shaping in a power converter184US 6,944,034 B1iWatt Inc. · 2005
- Interleaved zero current switching in a power factor correction boost converter164US 6,091,233 AMicro Linear Corporation · 2000
- Connectors adapted for controlling a small form factor power supply134US 6,091,611 AComarco Wireless Technologies, Inc. · 2000
- Small form factor power supply114US 5,838,554 AComarco Wireless Technologies, Inc. · 1998
- System and method for input current shaping in a power converter108US 7,161,816 B2iWatt Inc. · 2007