H02P 6/21
Open loop start
H02P6/21 (Open loop start) appears on 218 US grants and 196 published applications in this corpus.
Search patents in H02P- Granted patents
- 218
- Published applications
- 196
- Assignees
- 165
- Inventors
- 512
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 10 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 4 |
| 2002 | 9 | 5 |
| 2003 | 11 | 5 |
| 2004 | 3 | 3 |
| 2005 | 2 | 6 |
| 2006 | 5 | 6 |
| 2007 | 7 | 6 |
| 2008 | 3 | 3 |
| 2009 | 2 | 11 |
| 2010 | 5 | 4 |
| 2011 | 4 | 6 |
| 2012 | 10 | 6 |
| 2013 | 7 | 11 |
| 2014 | 7 | 10 |
| 2015 | 8 | 8 |
| 2016 | 9 | 5 |
| 2017 | 7 | 7 |
| 2018 | 4 | 5 |
| 2019 | 7 | 13 |
| 2020 | 6 | 10 |
| 2021 | 10 | 12 |
| 2022 | 15 | 13 |
| 2023 | 12 | 12 |
| 2024 | 11 | 10 |
| 2025 | 6 | 9 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Impact tools and control modes25 Aug 2026US 12,719,399 B2Black & Decker Inc.
- Motor control device23 Jun 2026US 12,665,531 B2Kabushiki Kaisha Yaskawa Denki
- Motor driver for starting up motor having any resistance5 May 2026US 12,620,919 B2Anpec Electronics Corporation
- Methods and systems for synchronizing synchronous motors with electric grid based on detected shaft position14 Apr 2026US 12,603,590 B2Nuovo Pignone Tecnologie Srl
- Control method, control apparatus and control system for eletric motor, and computer-readable storage medium and air conditioner13 Jan 2026US 12,525,908 B2Gd Midea Heating & Ventilating Equipment Co., Ltd.
- Control device13 Aug 2026US 2026/0238150 A1Kabushiki Kaisha Toyota Jidoshokki
- Method for Starting an EC Motor, Assembly, Tool, and Devices25 Jun 2026US 2026/0180477 A1Andreas Stihl AG & CO.KG
- Device and method for controlling a bldc motor19 Mar 2026US 2026/0081545 A1Melexis Technologies SA
- Well-behaved sensorless motor start5 Feb 2026US 2026/0039231 A1BorgWarner Inc.
- Method for operating a fluid conveying device, fluid conveying device, computer program, and computer-readable medium29 Jan 2026US 2026/0028976 A1Vitesco Technologies GmbH
Most cited
By later US patents
- Brushless permanent magnet motor system187US 4,743,815 AEmerson Electric Co. · 1988
- Method and device for controlling position sensorless motor67US 6,483,270 B1Seiko Epson Corporation · 2002
- Control device for brushless DC motor59US 6,034,494 ADenso Corporation · 2000
- Control systems and methods for permanent magnet rotating machines52US 7,208,895 B2Emerson Electric Co. · 2007
- Method and device for driving DC brushless motor51US 5,783,917 AZexel Corporation · 1998