H02P 25/03
With brushless excitation
Official title: with brushless excitation
H02P25/03 (With brushless excitation) appears on 393 US grants and 388 published applications in this corpus.
Search patents in H02P- Granted patents
- 393
- Published applications
- 388
- Assignees
- 240
- Inventors
- 943
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 9 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 4 |
| 2005 | 4 | 9 |
| 2006 | 5 | 11 |
| 2007 | 8 | 8 |
| 2008 | 5 | 8 |
| 2009 | 6 | 5 |
| 2010 | 7 | 8 |
| 2011 | 5 | 7 |
| 2012 | 8 | 9 |
| 2013 | 6 | 9 |
| 2014 | 6 | 12 |
| 2015 | 18 | 17 |
| 2016 | 12 | 13 |
| 2017 | 15 | 22 |
| 2018 | 23 | 21 |
| 2019 | 17 | 28 |
| 2020 | 32 | 22 |
| 2021 | 14 | 19 |
| 2022 | 23 | 25 |
| 2023 | 24 | 32 |
| 2024 | 14 | 36 |
| 2025 | 32 | 33 |
| 2026 | 17 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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.
- Conveyor system, motor-roller controller and method for operating a conveyor system25 Aug 2026US 12,715,697 B2Industrial Software
- Compensation system and method for zero-crossing voltage of back electromotiv force of brushless direct current motor25 Aug 2026US 12,719,394 B2Jiangsu Dongcheng Tools Technology Co., Ltd.
- Drug delivery device with an improved mechanism for controlling the delivery rate14 Jul 2026US 12,678,559 B2Ypsomed 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
- Contactless wound-field rotor8 Oct 2026US 2026/0312524 A1Aisin Corporation
- Multiple pulse initialization of a bldc motor encoder6 Aug 2026US 2026/0230011 A1Robert Bosch GmbH
- Vector control method for a synchronous machine, and control unit30 Jul 2026US 2026/0221919 A1Schaeffler Technologies AG & Co. KG
Most cited
By later US patents
- Electric motor and motor control173US 8,575,873 B2Nidec Motor Corporation · 2013
- Electric motor and motor control166US 9,893,660 B2Nidec Motor Corporation · 2018
- Sensorless rotor tracking of induction machines with asymmetrical rotor resistance74US 6,069,467 AGeneral Electric Company · 2000
- Control system for suppressing torque ripple in synchronous motor56US 4,240,020 AHitachi, Ltd. · 1980
- Speed control apparatus for a brushless direct current motor53US 4,855,652 AHitachi, Ltd. · 1989