H02P 8/14
Arrangements for controlling speed or speed and torque
Official title: Arrangements for controlling speed or speed and torque (H02P8/12, H02P8/22 take precedence)
H02P8/14 (Arrangements for controlling speed or speed and torque) appears on 450 US grants and 246 published applications in this corpus.
Search patents in H02P- Granted patents
- 450
- Published applications
- 246
- Assignees
- 266
- Inventors
- 789
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 1 | 0 |
| 1981 | 9 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 13 | 0 |
| 1985 | 9 | 0 |
| 1986 | 8 | 0 |
| 1987 | 21 | 0 |
| 1988 | 17 | 0 |
| 1989 | 13 | 0 |
| 1990 | 11 | 0 |
| 1991 | 11 | 0 |
| 1992 | 8 | 0 |
| 1993 | 13 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 12 | 0 |
| 1998 | 7 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 1 |
| 2002 | 7 | 11 |
| 2003 | 10 | 16 |
| 2004 | 5 | 8 |
| 2005 | 10 | 4 |
| 2006 | 7 | 5 |
| 2007 | 3 | 7 |
| 2008 | 3 | 6 |
| 2009 | 7 | 3 |
| 2010 | 4 | 6 |
| 2011 | 5 | 11 |
| 2012 | 3 | 6 |
| 2013 | 9 | 8 |
| 2014 | 5 | 12 |
| 2015 | 10 | 12 |
| 2016 | 13 | 13 |
| 2017 | 12 | 14 |
| 2018 | 15 | 17 |
| 2019 | 19 | 20 |
| 2020 | 20 | 14 |
| 2021 | 7 | 12 |
| 2022 | 15 | 9 |
| 2023 | 10 | 5 |
| 2024 | 8 | 10 |
| 2025 | 9 | 10 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Carriage apparatus, printing apparatus, and control method thereof29 Sep 2026US 12,746,768 B2Canon Kabushiki Kaisha
- Stepping motor control device, movement, watch, and stepping motor control method24 Feb 2026US 12,562,661 B2Seiko Watch Kabushiki Kaisha
- Control device, substrate processing system, and method of controlling vacuum valve device4 Nov 2025US 12,463,060 B2Tokyo Electron Limited
- Control method for stepping motor of thermal printer2 Sep 2025US 12,407,281 B2Zhuhai Xprinter Electronics Technology Co., Ltd.
- Phase-locked loop control system and method for a motor12 Aug 2025US 12,388,380 B2
- Motor control system24 Sep 2026US 2026/0291414 A1Kabushiki Kaisha Toshiba
- Laboratory apparatus having a movable element and a drive device13 Aug 2026US 2026/0238146 A1Hans Heidolph GmbH
- Power supply method for a stepper motor and drive device for operating the latter16 Jul 2026US 2026/0205038 A1Carel Industries S.P.A.
- Method for adjusting oscillation angle of fan and fan11 Jun 2026US 2026/0160259 A1Sinowell (Shanghai) Co., Ltd.
- Systems and methods for jitter minimization by stepper motor control28 May 2026US 2026/0149395 A1Macdonald, Dettwiler and Associates Inc.
Most cited
By later US patents
- Motor health monitoring and medical device incorporating same119US 8,523,803 B1Medtronic MiniMed, Inc. · 2013
- Direct detection of back EMF in permanent magnet step motors77US 4,480,218 AInternational Business Machines Corporation · 1984
- Low power stepper motor drive system and method73US 4,851,755 AAmpex Corporation · 1989
- Micro-step drive system of a five-phase stepping motor68US 5,194,796 AOriental Motor Co., Ltd. · 1993
- Variable step rate precision pumping apparatus66US 5,932,987 AMillipore Corporation · 1999