H02P 25/02
Arrangements or methods for the control of ac motors characterised by the
Official title: characterised by the kind of motor
H02P25/02 (Arrangements or methods for the control of ac motors characterised by the) appears on 3,226 US grants and 2,855 published applications in this corpus.
Search patents in H02P- Granted patents
- 3,226
- Published applications
- 2,855
- Assignees
- 1,197
- Inventors
- 5,761
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 11 | 0 |
| 1978 | 18 | 0 |
| 1979 | 18 | 0 |
| 1980 | 11 | 0 |
| 1981 | 21 | 0 |
| 1982 | 25 | 0 |
| 1983 | 18 | 0 |
| 1984 | 36 | 0 |
| 1985 | 20 | 0 |
| 1986 | 35 | 0 |
| 1987 | 30 | 0 |
| 1988 | 23 | 0 |
| 1989 | 21 | 0 |
| 1990 | 23 | 0 |
| 1991 | 26 | 0 |
| 1992 | 35 | 0 |
| 1993 | 29 | 0 |
| 1994 | 31 | 0 |
| 1995 | 27 | 0 |
| 1996 | 34 | 0 |
| 1997 | 49 | 0 |
| 1998 | 71 | 0 |
| 1999 | 85 | 0 |
| 2000 | 72 | 0 |
| 2001 | 48 | 19 |
| 2002 | 51 | 47 |
| 2003 | 36 | 34 |
| 2004 | 49 | 66 |
| 2005 | 54 | 78 |
| 2006 | 59 | 83 |
| 2007 | 71 | 73 |
| 2008 | 48 | 68 |
| 2009 | 48 | 71 |
| 2010 | 56 | 90 |
| 2011 | 50 | 84 |
| 2012 | 75 | 68 |
| 2013 | 83 | 98 |
| 2014 | 82 | 116 |
| 2015 | 90 | 140 |
| 2016 | 117 | 126 |
| 2017 | 138 | 155 |
| 2018 | 149 | 165 |
| 2019 | 151 | 180 |
| 2020 | 177 | 190 |
| 2021 | 159 | 136 |
| 2022 | 133 | 168 |
| 2023 | 154 | 164 |
| 2024 | 145 | 189 |
| 2025 | 156 | 136 |
| 2026 | 65 | 111 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Motor control device29 Sep 2026US 12,749,996 B2Lutron Technology Company LLC
- Motor controller15 Sep 2026US 12,738,871 B2Infineon Technologies Austria AG
- Motor control system, motor control method, and non-transitory storage medium8 Sep 2026US 12,732,124 B2Toyota Jidosha Kabushiki Kaisha
- Wide voltage adaptable drive and control circuit for hairdryers8 Sep 2026US 12,732,129 B2Shenzhen Jingxintai Houseware Co., Ltd.
- Parameter estimation for a permanent magnet synchronous motor1 Sep 2026US 12,726,146 B2Infineon Technologies Austria AG
- Drug delivery device with an improved mechanism for controlling the delivery rate8 Oct 2026US 2026/0306740 A1Ypsomed AG
- Rotor, separately excited synchronous machine and motor vehicle8 Oct 2026US 2026/0312469 A1
- Method of identifying the parameters of a permanent magnet synchronous motor8 Oct 2026US 2026/0312518 A1Arol S.P.A.
- Contactless wound-field rotor8 Oct 2026US 2026/0312524 A1Aisin Corporation
- Control factor based matrix converter control in a motor drive unit8 Oct 2026US 2026/0312525 A1Vidar Corporation
Most cited
By later US patents
- Cordless, battery operated surical tool1,621US 5,747,953 AStryker Corporation · 1998
- Method and apparatus for quiet variable motor speed control1,483US 7,330,004 B2Lutron Electronics Co., Inc. · 2008
- Direct current motor with independently driven and switchable stators1,152US 8,575,880 B22013
- Apparatus and method for controlling driving of linear motor1,064US 6,998,736 B2LG Electronics Inc. · 2006
- Linear motor and linear compressor using the same1,020US 7,489,055 B2LG Electronics Inc. · 2009