H02M 7/487
Neutral point clamped inverters
H02M7/487 (Neutral point clamped inverters) appears on 1,191 US grants and 1,408 published applications in this corpus.
Search patents in H02M- Granted patents
- 1,191
- Published applications
- 1,408
- Assignees
- 462
- Inventors
- 2,439
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 11 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 0 |
| 2002 | 12 | 4 |
| 2003 | 7 | 11 |
| 2004 | 10 | 15 |
| 2005 | 8 | 8 |
| 2006 | 15 | 18 |
| 2007 | 4 | 12 |
| 2008 | 7 | 14 |
| 2009 | 13 | 21 |
| 2010 | 10 | 16 |
| 2011 | 15 | 37 |
| 2012 | 17 | 34 |
| 2013 | 29 | 62 |
| 2014 | 34 | 91 |
| 2015 | 70 | 93 |
| 2016 | 80 | 82 |
| 2017 | 94 | 76 |
| 2018 | 87 | 61 |
| 2019 | 71 | 66 |
| 2020 | 61 | 70 |
| 2021 | 64 | 86 |
| 2022 | 66 | 83 |
| 2023 | 74 | 120 |
| 2024 | 89 | 118 |
| 2025 | 98 | 130 |
| 2026 | 67 | 80 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Solar inverter and control method223US 8,184,460 B2General Electric Company · 2012
- Capacitor charge balancing technique for a three-level PWM power converter207US 6,842,354 B1Rockwell Automation Technologies, Inc. · 2005
- Device for feeding electric energy into a power grid and DC converter for such a device186US 8,116,103 B2SMA Solar Technology AG · 2012
- DC bus voltage balancing and control in multilevel inverters175US 6,031,738 AWisconsin Alumni Research Foundation · 2000
- Five level high power motor drive converter and control system127US 6,058,031 AGeneral Electric Company · 2000