H02M 5/225
Comprising two stages of ac-ac conversion
Official title: {comprising two stages of AC-AC conversion, e.g. having a high frequency intermediate link}
H02M5/225 (Comprising two stages of ac-ac conversion) appears on 137 US grants and 136 published applications in this corpus.
Search patents in H02M- Granted patents
- 137
- Published applications
- 136
- Assignees
- 88
- Inventors
- 294
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 2 |
| 2004 | 2 | 0 |
| 2005 | 2 | 1 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 3 |
| 2009 | 2 | 0 |
| 2010 | 1 | 3 |
| 2011 | 1 | 4 |
| 2012 | 3 | 7 |
| 2013 | 13 | 10 |
| 2014 | 0 | 7 |
| 2015 | 9 | 10 |
| 2016 | 11 | 4 |
| 2017 | 8 | 5 |
| 2018 | 5 | 10 |
| 2019 | 4 | 7 |
| 2020 | 7 | 6 |
| 2021 | 11 | 12 |
| 2022 | 9 | 7 |
| 2023 | 13 | 12 |
| 2024 | 9 | 7 |
| 2025 | 9 | 6 |
| 2026 | 2 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual stage AC to AC electrical power converters16 Jun 2026US 12,658,814 B2Rampx Holdings, Inc.
- Dual-stage AC to AC electric power converters13 Jan 2026US 12,525,889 B1Rampx Holdings, Inc.
- Solid-state transformer for mitigation of common mode insults16 Dec 2025US 12,500,415 B1National Technology & Engineering Solutions of Sandia, LLC
- Systems and methods for controlling soft-switching current source converters9 Dec 2025US 12,494,705 B2Georgia Tech Research Corporation
- Method for controlling cycloconverter circuit, cycloconverter circuit, and isolated converter2 Dec 2025US 12,489,358 B1Sigenergy Technology Co., Ltd.
- Housing for programmable power array energy router6 Aug 2026US 2026/0230001 A1
- Modular power converter for series connected batteries23 Jul 2026US 2026/0213644 A1Hanwha Solutions Corporation
- MODULAR POWER CONVERTER with modulator connector FOR SERIES CONNECTED BATTERIES23 Jul 2026US 2026/0213677 A1Hanwha Solutions Corporation
- Power Conversion System11 Jun 2026US 2026/0163492 A1Mitsubishi Electric Corporation
- Lightning-Resistant Power Transmission System4 Jun 2026US 2026/0155651 A1
Most cited
By later US patents
- Universal power converter67US 7,599,196 B2Ideal Power Converters, Inc. · 2009
- Multilevel converter based intelligent universal transformer61US 7,050,311 B2Electric Power Research Institute, Inc. · 2006
- Two-frequency electronic ballast system having an isolated PFC converter60US 5,907,223 APhilips Electronics North America Corporation · 1999
- Three-phase AC-to-AC series resonant power converter with reduced number of switches55US 5,010,471 A1991
- Inductive coupler50US 4,979,087 AAviation Limited · 1990