H02P 6/12
Monitoring commutation
Official title: Monitoring commutation; Providing indication of commutation failure
H02P6/12 (Monitoring commutation) appears on 327 US grants and 309 published applications in this corpus.
Search patents in H02P- Granted patents
- 327
- Published applications
- 309
- Assignees
- 183
- Inventors
- 699
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 2 |
| 2003 | 2 | 5 |
| 2004 | 1 | 5 |
| 2005 | 5 | 6 |
| 2006 | 4 | 3 |
| 2007 | 5 | 2 |
| 2008 | 3 | 3 |
| 2009 | 1 | 4 |
| 2010 | 4 | 5 |
| 2011 | 3 | 4 |
| 2012 | 3 | 4 |
| 2013 | 5 | 15 |
| 2014 | 4 | 29 |
| 2015 | 21 | 30 |
| 2016 | 28 | 30 |
| 2017 | 34 | 33 |
| 2018 | 31 | 21 |
| 2019 | 28 | 27 |
| 2020 | 23 | 33 |
| 2021 | 22 | 10 |
| 2022 | 16 | 12 |
| 2023 | 13 | 7 |
| 2024 | 12 | 7 |
| 2025 | 8 | 4 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Packet-based networking of variable frequency drives27 Jan 2026US RE50,770 E1Kimidrive LLC
- Online fault identification method for current sensor, diagnosis apparatus, and fault-tolerant control system16 Dec 2025US 12,500,532 B1Southwest Jiaotong University
- Method for testing switch signals of an inverter of an electric machine controlled via a pulse-width modulation4 Nov 2025US 12,461,133 B2Schaeffler Technologies AG & Co. KG
- Electric working machine23 Sep 2025US 12,424,953 B2Makita Corporation
- Method for fault processing of hall position sensor in brushless direct current motor5 Aug 2025US 12,381,452 B2Crm Icbg (Wuxi) Co., Ltd.
- Method and arrangement for energy-aware dead-time insertion8 Oct 2026US 2026/0312520 A1Silicon Mobility SAS
- Jammed dc motor detection method10 Sep 2026US 2026/0269750 A1Textron Aviation Inc.
- Method for operating a brushless electric motor with optimized emergency shutdown18 Jun 2026US 2026/0171936 A1AUMOVIO Germany GmbH
- Technique for controlling brushless motor of electric work machine28 May 2026US 2026/0149401 A1Makita Corporation
- Electric motor drive device and air conditioner26 Feb 2026US 2026/0058588 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Motor controller and electric tool having the same831US 8,294,399 B2Makita Corporation · 2012
- Brushless and sensorless DC motor control system with locked and stopped rotor detection137US 7,042,180 B2Tecumseh Products Company · 2006
- Method and apparatus for controlling a brushless DC motor that indicates a motor failure117US 6,153,993 AKabushiki Kaisha Toshiba · 2000
- Method and apparatus for controlling a brushless DC motor109US 5,694,010 AKabushiki Kaisha Toshiba · 1997
- Method and apparatus for operating polyphase DC motors80US 5,221,881 ASGS-Thomson Microelectronics S.A. · 1993