H02M 7/539
With automatic control of output wave form or frequency
Official title: with automatic control of output wave form or frequency (H02M7/5375 - H02M7/5387 take precedence)
H02M7/539 (With automatic control of output wave form or frequency) appears on 1,517 US grants and 1,765 published applications in this corpus.
Search patents in H02M- Granted patents
- 1,517
- Published applications
- 1,765
- Assignees
- 642
- Inventors
- 3,446
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 3 |
| 2003 | 6 | 4 |
| 2004 | 6 | 7 |
| 2005 | 2 | 15 |
| 2006 | 11 | 16 |
| 2007 | 11 | 13 |
| 2008 | 16 | 16 |
| 2009 | 9 | 20 |
| 2010 | 11 | 16 |
| 2011 | 12 | 24 |
| 2012 | 16 | 21 |
| 2013 | 19 | 33 |
| 2014 | 27 | 58 |
| 2015 | 42 | 65 |
| 2016 | 56 | 50 |
| 2017 | 79 | 87 |
| 2018 | 76 | 93 |
| 2019 | 98 | 140 |
| 2020 | 123 | 110 |
| 2021 | 96 | 108 |
| 2022 | 118 | 159 |
| 2023 | 121 | 172 |
| 2024 | 166 | 223 |
| 2025 | 188 | 162 |
| 2026 | 100 | 150 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Single-phase seven-level inverter22 Sep 2026US 12,744,473 B2Wayne State University
- Single-phase, three-level, buck-boost inverter22 Sep 2026US 12,744,474 B2Aselsan Elektronik Sanayi Ve Ticaret Anonim Sirketi
- Systems and methods for inverter synchronization8 Oct 2026US 2026/0312415 A1Caterpillar Inc.
- Power converting apparatus and home appliance including the same8 Oct 2026US 2026/0312477 A1LG Electronics Inc.
- Power converter control with second order harmonic injection8 Oct 2026US 2026/0312483 A1The Trustees of Columbia University in the City of New York
- Systems and methods for rotor assemblies and manufacturing thereof1 Oct 2026US 2026/0296634 A1Archer Aviation Inc.
- Power supply input circuit and inverter-integrated vehicular electric compressor equipped with same1 Oct 2026US 2026/0302968 A1Sanden Corporation
Most cited
By later US patents
- RF generator system for surgical vessel sealing1,033US 9,039,694 B2Just Right Surgical, LLC · 2015
- Method and apparatus for power inverter synchronization191US 7,183,667 B2Square D Company · 2007
- DC bus voltage balancing and control in multilevel inverters175US 6,031,738 AWisconsin Alumni Research Foundation · 2000
- High voltage supply circuit for an x-ray tube136US 4,641,330 AHeimann GmbH · 1987
- Five level high power motor drive converter and control system127US 6,058,031 AGeneral Electric Company · 2000