H02M 5/00
Conversion of ac power input into ac power output
Official title: Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
H02M5/00 (Conversion of ac power input into ac power output) appears on 4,533 US grants and 4,200 published applications in this corpus.
Search patents in H02M- Granted patents
- 4,533
- Published applications
- 4,200
- Assignees
- 1,556
- Inventors
- 7,639
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 33 | 0 |
| 1977 | 39 | 0 |
| 1978 | 30 | 0 |
| 1979 | 16 | 0 |
| 1980 | 24 | 0 |
| 1981 | 28 | 0 |
| 1982 | 30 | 0 |
| 1983 | 19 | 0 |
| 1984 | 32 | 0 |
| 1985 | 30 | 0 |
| 1986 | 39 | 0 |
| 1987 | 60 | 0 |
| 1988 | 39 | 0 |
| 1989 | 47 | 0 |
| 1990 | 39 | 0 |
| 1991 | 38 | 0 |
| 1992 | 29 | 0 |
| 1993 | 39 | 0 |
| 1994 | 30 | 0 |
| 1995 | 21 | 0 |
| 1996 | 28 | 0 |
| 1997 | 39 | 0 |
| 1998 | 44 | 0 |
| 1999 | 42 | 0 |
| 2000 | 52 | 0 |
| 2001 | 61 | 14 |
| 2002 | 35 | 38 |
| 2003 | 47 | 74 |
| 2004 | 63 | 77 |
| 2005 | 44 | 82 |
| 2006 | 64 | 61 |
| 2007 | 63 | 75 |
| 2008 | 54 | 89 |
| 2009 | 59 | 94 |
| 2010 | 80 | 99 |
| 2011 | 67 | 123 |
| 2012 | 98 | 133 |
| 2013 | 120 | 206 |
| 2014 | 122 | 243 |
| 2015 | 163 | 282 |
| 2016 | 240 | 256 |
| 2017 | 301 | 284 |
| 2018 | 285 | 279 |
| 2019 | 298 | 245 |
| 2020 | 279 | 261 |
| 2021 | 234 | 273 |
| 2022 | 234 | 223 |
| 2023 | 180 | 210 |
| 2024 | 195 | 184 |
| 2025 | 187 | 143 |
| 2026 | 93 | 152 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Step down the voltage in the transmission lines using capacitors and high frequency switches6 Oct 2026US 12,756,325 B2Saudi Arabian Oil Company
- AC-to-AC converter having higher output frequency6 Oct 2026US 12,756,326 B2Dyson Technology Limited
- Radiation hardened active power transformer29 Sep 2026US 12,749,617 B2Rockwell Collins, Inc.
- Induction heating cooktop and wireless indicator for indicating operation state thereof29 Sep 2026US 12,750,926 B2LG Electronics Inc.
- Load control device for high-efficiency loads29 Sep 2026US 12,750,930 B2Lutron Technology Company LLC
- Damping-disconnect circuit for a power converter8 Oct 2026US 2026/0312489 A1Eaton Intelligent Power Limited
- Universal power input front end for an energy storage control cabinet8 Oct 2026US 2026/0312506 A1GE Vernova Infrastructure Technology LLC
- Circuit for driving a motor of a vacuum pump, vacuum pump assembly, and method8 Oct 2026US 2026/0312507 A1Edwards Limited
- Cooking appliance1 Oct 2026US 2026/0304565 A1LG Electronics Inc.
- Power converter17 Sep 2026US 2026/0280438 A1Infineon Technologies Austria AG
Most cited
By later US patents
- Apparatus for controlling electric motor861US 4,788,485 AMitsubishi Denki Kabushiki Kaisha · 1988
- Ozone generator with in-line ozone sensor515US 5,540,898 AVasogen, Inc. · 1996
- Inverter device and air conditioner including the same505US 8,884,560 B2Mitsubishi Electric Corporation · 2014
- Inductive power distribution system300US 5,293,308 AAuckland Uniservices Limited · 1994
- Modular power supply with PLL control298US 4,783,728 AModular Power Corporation · 1988