H02P 21/34
Arrangements for starting
H02P21/34 (Arrangements for starting) appears on 220 US grants and 226 published applications in this corpus.
Search patents in H02P- Granted patents
- 220
- Published applications
- 226
- Assignees
- 143
- Inventors
- 552
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 1 |
| 2003 | 2 | 5 |
| 2004 | 4 | 2 |
| 2005 | 2 | 2 |
| 2006 | 4 | 6 |
| 2007 | 4 | 4 |
| 2008 | 2 | 1 |
| 2009 | 1 | 7 |
| 2010 | 3 | 5 |
| 2011 | 4 | 5 |
| 2012 | 5 | 5 |
| 2013 | 5 | 5 |
| 2014 | 7 | 6 |
| 2015 | 6 | 6 |
| 2016 | 6 | 7 |
| 2017 | 8 | 10 |
| 2018 | 10 | 19 |
| 2019 | 17 | 17 |
| 2020 | 16 | 23 |
| 2021 | 15 | 9 |
| 2022 | 15 | 9 |
| 2023 | 17 | 21 |
| 2024 | 12 | 17 |
| 2025 | 18 | 22 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Motor controller15 Sep 2026US 12,738,871 B2Infineon Technologies Austria AG
- Enhanced I/F control system and method for permanent magnet synchronous machines1 Sep 2026US 12,726,145 B2MAGNA Powertrain AG & Co KG
- Field-oriented sensorless brushless motor control in a power tool30 Jun 2026US 12,671,355 B2Black & Decker Inc.
- Method of aligning a stationary rotor of a synchronous motor at a configured rotor angle and a controller therefor26 May 2026US 12,640,631 B1Kinetic Technologies International Holdings LP
- Motor driver for starting up motor having any resistance5 May 2026US 12,620,919 B2Anpec Electronics Corporation
- Control device and phase error correction method1 Oct 2026US 2026/0302977 A1Honda Motor Co., Ltd.
- Forward and reverse rotation control circuit and method for sensorless motor, and motor controller1 Oct 2026US 2026/0302984 A1Crm Icbg (Wuxi) Co., Ltd.
- Control for mutually coupled switched reluctance motor with double-layer winding27 Aug 2026US 2026/0254385 A1
- Motor closed-loop detection circuit and method27 Aug 2026US 2026/0254386 A1Crm Icbg (Wuxi) Co., Ltd.
- Control device13 Aug 2026US 2026/0238150 A1Kabushiki Kaisha Toyota Jidoshokki
Most cited
By later US patents
- Speed sensorless hybrid vector controlled induction motor with zero speed operation69US 5,811,957 AGeneral Motors Corporation · 1998
- Brushless doubly-fed induction machine control62US 6,784,634 B22004
- Method and system for starting a sensorless motor62US 7,652,441 B2International Rectifier Corporation · 2010
- Method and apparatus for transducerless flux estimation in drives for induction machines57US 5,559,419 AWisconsin Alumni Research Foundation · 1996
- Dual stator winding induction machine drive47US 6,242,884 B1Wisconsin Alumni Research Foundation · 2001