H02P 25/022
Synchronous motors
Official title: Synchronous motors (H02P25/064 takes precedence)
H02P25/022 (Synchronous motors) appears on 898 US grants and 896 published applications in this corpus.
Search patents in H02P- Granted patents
- 898
- Published applications
- 896
- Assignees
- 463
- Inventors
- 2,096
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 11 | 0 |
| 1982 | 11 | 0 |
| 1983 | 7 | 0 |
| 1984 | 21 | 0 |
| 1985 | 12 | 0 |
| 1986 | 19 | 0 |
| 1987 | 14 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 9 | 0 |
| 1991 | 8 | 0 |
| 1992 | 4 | 0 |
| 1993 | 8 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 2 |
| 2003 | 1 | 3 |
| 2004 | 5 | 11 |
| 2005 | 10 | 13 |
| 2006 | 12 | 18 |
| 2007 | 16 | 16 |
| 2008 | 6 | 17 |
| 2009 | 14 | 13 |
| 2010 | 11 | 19 |
| 2011 | 11 | 26 |
| 2012 | 17 | 26 |
| 2013 | 30 | 28 |
| 2014 | 22 | 40 |
| 2015 | 43 | 39 |
| 2016 | 32 | 28 |
| 2017 | 35 | 35 |
| 2018 | 40 | 51 |
| 2019 | 40 | 66 |
| 2020 | 58 | 57 |
| 2021 | 47 | 49 |
| 2022 | 49 | 66 |
| 2023 | 55 | 63 |
| 2024 | 50 | 89 |
| 2025 | 57 | 66 |
| 2026 | 38 | 54 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Conveyor system, motor-roller controller and method for operating a conveyor system25 Aug 2026US 12,715,697 B2Industrial Software
- 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
- Optimized control for dual wound synchronous motor drives with asymmetric supply voltages1 Oct 2026US 2026/0302991 A1
Most cited
By later US patents
- Direct current motor with independently driven and switchable stators1,152US 8,575,880 B22013
- Apparatus for controlling electric motor861US 4,788,485 AMitsubishi Denki Kabushiki Kaisha · 1988
- Air gap control systems and methods405US 10,193,429 B2Boulder Wind Power, Inc. · 2019
- Electric motor and motor control173US 8,575,873 B2Nidec Motor Corporation · 2013
- Electric motor and motor control166US 9,893,660 B2Nidec Motor Corporation · 2018