H02M 1/12
Arrangements for reducing harmonics from ac input or output
Official title: Arrangements for reducing harmonics from AC input or output
H02M1/12 (Arrangements for reducing harmonics from ac input or output) appears on 2,743 US grants and 3,128 published applications in this corpus.
Search patents in H02M- Granted patents
- 2,743
- Published applications
- 3,128
- Assignees
- 1,122
- Inventors
- 5,483
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 12 | 0 |
| 1995 | 4 | 0 |
| 1996 | 18 | 0 |
| 1997 | 14 | 0 |
| 1998 | 21 | 0 |
| 1999 | 13 | 0 |
| 2000 | 21 | 0 |
| 2001 | 19 | 5 |
| 2002 | 22 | 23 |
| 2003 | 25 | 32 |
| 2004 | 25 | 37 |
| 2005 | 20 | 32 |
| 2006 | 39 | 36 |
| 2007 | 21 | 49 |
| 2008 | 32 | 40 |
| 2009 | 26 | 38 |
| 2010 | 42 | 47 |
| 2011 | 31 | 63 |
| 2012 | 53 | 64 |
| 2013 | 52 | 131 |
| 2014 | 77 | 122 |
| 2015 | 115 | 180 |
| 2016 | 154 | 175 |
| 2017 | 173 | 194 |
| 2018 | 200 | 186 |
| 2019 | 194 | 246 |
| 2020 | 210 | 219 |
| 2021 | 155 | 193 |
| 2022 | 211 | 199 |
| 2023 | 167 | 216 |
| 2024 | 170 | 247 |
| 2025 | 234 | 188 |
| 2026 | 109 | 166 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power supply device including a noise attenuation unit6 Oct 2026US 12,756,293 B2Kabushiki Kaisha Toyota Jidoshokki
- Direct control method and system for internal potential of bridge arm of new energy grid-tied inverter6 Oct 2026US 12,756,331 B2Southeast University
- Photoluminescent sign with transient-suppressed LED circuit29 Sep 2026US 12,747,849 B2Ecoglo International Limited
- System, a control unit and a method for controlling capacitors in the system in an at least partly electrical driven vehicle29 Sep 2026US 12,749,965 B2Volvo Truck Corporation
- Switching power supply device22 Sep 2026US 12,744,467 B2Murata Manufacturing Co., Ltd.
- Method of generalized synchronous optimal pulse width modulation for renewable energy station and system thereof8 Oct 2026US 2026/0312407 A1Shandong University
- Power converter control with second order harmonic injection8 Oct 2026US 2026/0312483 A1The Trustees of Columbia University in the City of New York
- Circuit for driving a motor of a vacuum pump, vacuum pump assembly, and method8 Oct 2026US 2026/0312507 A1Edwards Limited
- Power supply circuit8 Oct 2026US 2026/0312511 A1Fuji Electric Co., Ltd.
- Power conversion device1 Oct 2026US 2026/0302920 A1Nissan Motor Co., Ltd.
Most cited
By later US patents
- System and method for reducing harmonic currents by current injection335US 5,345,375 ARegents of the University of Minnesota · 1994
- Power conversion apparatus, power conversion system, and islanding operation detection method259US 6,801,442 B2Canon Kabushiki Kaisha · 2004
- Method of reducing leakage current in power supply systems254US 6,611,441 B2Canon Kabushiki Kaisha · 2003
- System for reducing harmonics by harmonic current injection194US 5,499,178 ARegents of the University of Minnesota · 1996
- Power conditioning unit183US 8,369,113 B2Enecsys Limited · 2013