H02P 2201/03
Ac-dc converter stage controlled to provide a defined dc link voltage
Official title: AC-DC converter stage controlled to provide a defined DC link voltage
H02P2201/03 (Ac-dc converter stage controlled to provide a defined dc link voltage) appears on 148 US grants and 131 published applications in this corpus.
Search patents in H02P- Granted patents
- 148
- Published applications
- 131
- Assignees
- 87
- Inventors
- 347
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 4 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 4 | 3 |
| 2012 | 1 | 2 |
| 2013 | 1 | 3 |
| 2014 | 3 | 2 |
| 2015 | 2 | 2 |
| 2016 | 1 | 5 |
| 2017 | 7 | 12 |
| 2018 | 7 | 14 |
| 2019 | 18 | 20 |
| 2020 | 13 | 17 |
| 2021 | 14 | 18 |
| 2022 | 22 | 4 |
| 2023 | 8 | 9 |
| 2024 | 6 | 1 |
| 2025 | 4 | 4 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Variable speed induction motor control system43US 4,249,120 AMcGraw-Edison Company · 1981
- Common mode & differential mode filter for variable speed drive43US 7,746,020 B2Johnson Controls Technology Company · 2010
- Motor control system for centrifugal machine34US 5,731,681 AHitachi Koki Co., Ltd. · 1998
- Inverter circuit33US 4,158,163 ADanfoss A/S · 1979
- Cooling systems for variable speed drives and inductors32US 7,876,561 B2Johnson Controls Technology Company · 2011