H02P 25/16
Arrangements or methods for the control of ac motors characterised by the
Official title: characterised by the circuit arrangement or by the kind of wiring
H02P25/16 (Arrangements or methods for the control of ac motors characterised by the) appears on 1,344 US grants and 1,498 published applications in this corpus.
Search patents in H02P- Granted patents
- 1,344
- Published applications
- 1,498
- Assignees
- 523
- Inventors
- 2,474
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 12 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 4 |
| 2003 | 1 | 6 |
| 2004 | 9 | 12 |
| 2005 | 8 | 16 |
| 2006 | 15 | 23 |
| 2007 | 14 | 19 |
| 2008 | 14 | 26 |
| 2009 | 17 | 23 |
| 2010 | 14 | 31 |
| 2011 | 21 | 35 |
| 2012 | 31 | 41 |
| 2013 | 28 | 56 |
| 2014 | 33 | 56 |
| 2015 | 41 | 53 |
| 2016 | 53 | 75 |
| 2017 | 76 | 81 |
| 2018 | 55 | 77 |
| 2019 | 90 | 122 |
| 2020 | 103 | 150 |
| 2021 | 133 | 95 |
| 2022 | 114 | 115 |
| 2023 | 89 | 118 |
| 2024 | 119 | 114 |
| 2025 | 111 | 91 |
| 2026 | 49 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02P 25/22Multiple windings730
- H02P 25/18With arrangements for switching the windings467
- H02P 25/24Variable impedance in stator or rotor circuit66
- H02P 25/30The motor being controlled by a control effected upon an ac generator10
- H02P 25/32Using discharge tubes9
- H02P 25/28Using magnetic devices with controllable degree of saturation8
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