H02M 1/425
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 high frequency AC output voltage}
H02M1/425 (Using a single converter stage both for correction of ac input power) appears on 165 US grants and 97 published applications in this corpus.
Search patents in H02M- Granted patents
- 165
- Published applications
- 97
- Assignees
- 107
- Inventors
- 334
- Latest grant
- 10 Feb 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 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 10 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 10 | 0 |
| 2001 | 7 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 7 |
| 2005 | 3 | 10 |
| 2006 | 4 | 3 |
| 2007 | 5 | 1 |
| 2008 | 4 | 3 |
| 2009 | 4 | 2 |
| 2010 | 5 | 2 |
| 2011 | 1 | 4 |
| 2012 | 3 | 4 |
| 2013 | 5 | 4 |
| 2014 | 1 | 4 |
| 2015 | 3 | 2 |
| 2016 | 2 | 4 |
| 2017 | 3 | 1 |
| 2018 | 5 | 4 |
| 2019 | 6 | 4 |
| 2020 | 5 | 3 |
| 2021 | 5 | 8 |
| 2022 | 6 | 8 |
| 2023 | 4 | 5 |
| 2024 | 9 | 6 |
| 2025 | 3 | 1 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and control circuit for operating a power converter10 Feb 2026US 12,549,089 B2Infineon Technologies Austria AG
- Micro inverter and modulation method thereof9 Sep 2025US 12,413,159 B2Sungrow Power Supply Co., Ltd.
- AC-DC power converter with power factor correction5 Aug 2025US 12,381,480 B2Danmarks Tekniske Universitet
- Power converter, motor driver, and refrigeration cycle applied equipment11 Mar 2025US 12,249,928 B2Mitsubishi Electric Corporation
- Three phase bidirectional AC-DC converter with bipolar voltage fed resonant stages17 Sep 2024US 12,095,381 B2The Research Foundation for The State University of New York
- Power factor corrected power supply with small bus capacitor9 Apr 2026US 2026/0100641 A1
- Current Sharing Control Method And AC-DC Conversion System26 Mar 2026US 2026/0088731 A1Vertiv Corporation
- Three-Phase Single-Stage AC-DC Converter And Control Method And Control Apparatus Therefor19 Mar 2026US 2026/0081532 A1Vertiv Corporation
- Method for operating a power converter and power con-verter22 Jan 2026US 2026/0025076 A1
- Novel high efficiency line interactive ups30 Jan 2025US 2025/0038654 A1Schneider Electric It Corporation
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
- LED power control methods and apparatus433US 7,256,554 B2Color Kinetics Incorporated · 2007
- LED-based lighting network power control methods and apparatus390US 7,233,115 B2Color Kinetics Incorporated · 2007
- Power factor correction control methods and apparatus240US 7,358,706 B2Philips Solid-State Lighting Solutions, Inc. · 2008