H02M 1/42
Circuits or arrangements for compensating for or adjusting power factor in converters
Official title: Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
H02M1/42 (Circuits or arrangements for compensating for or adjusting power factor in converters) appears on 4,691 US grants and 4,852 published applications in this corpus.
Search patents in H02M- Granted patents
- 4,691
- Published applications
- 4,852
- Assignees
- 1,459
- Inventors
- 7,222
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 11 | 0 |
| 1990 | 20 | 0 |
| 1991 | 24 | 0 |
| 1992 | 18 | 0 |
| 1993 | 18 | 0 |
| 1994 | 33 | 0 |
| 1995 | 48 | 0 |
| 1996 | 42 | 0 |
| 1997 | 69 | 0 |
| 1998 | 73 | 0 |
| 1999 | 74 | 0 |
| 2000 | 92 | 0 |
| 2001 | 79 | 11 |
| 2002 | 51 | 57 |
| 2003 | 50 | 51 |
| 2004 | 51 | 64 |
| 2005 | 50 | 86 |
| 2006 | 68 | 68 |
| 2007 | 50 | 66 |
| 2008 | 51 | 74 |
| 2009 | 52 | 87 |
| 2010 | 56 | 138 |
| 2011 | 73 | 156 |
| 2012 | 117 | 171 |
| 2013 | 141 | 231 |
| 2014 | 181 | 282 |
| 2015 | 215 | 289 |
| 2016 | 293 | 278 |
| 2017 | 286 | 268 |
| 2018 | 307 | 240 |
| 2019 | 303 | 247 |
| 2020 | 255 | 267 |
| 2021 | 217 | 269 |
| 2022 | 237 | 296 |
| 2023 | 225 | 315 |
| 2024 | 227 | 349 |
| 2025 | 314 | 277 |
| 2026 | 181 | 215 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power supply apparatus6 Oct 2026US 12,756,294 B2Delta Electronics, Inc.
- Power conversion apparatus, control apparatus, and switch-mode power supply6 Oct 2026US 12,756,298 B2Huawei Digital Power Technologies Co., Ltd.
- Series power factor correction boost converter and method6 Oct 2026US 12,756,299 B2Rockwell Collins, Inc.
- Power conversion circuit and power supply device6 Oct 2026US 12,756,328 B2Delta Electronics (Shanghai) Co., Ltd.
- Radiation hardened active power transformer29 Sep 2026US 12,749,617 B2Rockwell Collins, Inc.
- Power supply circuit8 Oct 2026US 2026/0312511 A1Fuji Electric Co., Ltd.
- Flexible powering architectures1 Oct 2026US 2026/0302827 A1Alpha Technologies Inc.
- Bidirectional power supply device1 Oct 2026US 2026/0302926 A1Kabushiki Kaisha Toyota Jidoshokki
- Ac-to-dc voltage converter1 Oct 2026US 2026/0302934 A1
- Method for detecting the presence or absence of a neutral conductive line in a multiphase ac voltage source1 Oct 2026US 2026/0302970 A1Schaeffler Technologies AG & Co. KG
Most cited
By later US patents
- Apparatus for controlling electric motor861US 4,788,485 AMitsubishi Denki Kabushiki Kaisha · 1988
- High frequency inverter with power-line-controlled frequency modulation615US 5,404,082 ANorth American Philips Corporation · 1995
- Universal ballast control circuit611US 6,137,240 ALumion Corporation · 2000
- Power supply for light emitting diode array454US 5,661,645 A1997
- LED power control methods and apparatus433US 7,256,554 B2Color Kinetics Incorporated · 2007