H02P 8/00
Arrangements for controlling dynamo-electric motors rotating step by step
H02P8/00 (Arrangements for controlling dynamo-electric motors rotating step by step) appears on 1,447 US grants and 937 published applications in this corpus.
Search patents in H02P- Granted patents
- 1,447
- Published applications
- 937
- Assignees
- 656
- Inventors
- 2,254
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 15 | 0 |
| 1978 | 21 | 0 |
| 1979 | 11 | 0 |
| 1980 | 15 | 0 |
| 1981 | 24 | 0 |
| 1982 | 20 | 0 |
| 1983 | 21 | 0 |
| 1984 | 46 | 0 |
| 1985 | 36 | 0 |
| 1986 | 20 | 0 |
| 1987 | 47 | 0 |
| 1988 | 32 | 0 |
| 1989 | 31 | 0 |
| 1990 | 21 | 0 |
| 1991 | 27 | 0 |
| 1992 | 18 | 0 |
| 1993 | 30 | 0 |
| 1994 | 20 | 0 |
| 1995 | 11 | 0 |
| 1996 | 16 | 0 |
| 1997 | 26 | 0 |
| 1998 | 31 | 0 |
| 1999 | 27 | 0 |
| 2000 | 36 | 0 |
| 2001 | 19 | 5 |
| 2002 | 16 | 29 |
| 2003 | 26 | 35 |
| 2004 | 17 | 22 |
| 2005 | 35 | 30 |
| 2006 | 32 | 37 |
| 2007 | 22 | 26 |
| 2008 | 21 | 32 |
| 2009 | 21 | 39 |
| 2010 | 25 | 35 |
| 2011 | 35 | 38 |
| 2012 | 24 | 32 |
| 2013 | 33 | 35 |
| 2014 | 27 | 42 |
| 2015 | 35 | 33 |
| 2016 | 40 | 53 |
| 2017 | 45 | 55 |
| 2018 | 49 | 53 |
| 2019 | 72 | 65 |
| 2020 | 52 | 60 |
| 2021 | 41 | 47 |
| 2022 | 43 | 29 |
| 2023 | 35 | 23 |
| 2024 | 28 | 31 |
| 2025 | 28 | 29 |
| 2026 | 12 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H02P 8/14Arrangements for controlling speed or speed and torque450
- H02P 8/12Control or stabilisation of current277
- H02P 8/36Protection against faults233
- H02P 8/22Control of step size176
- H02P 8/34Monitoring operation171
- H02P 8/32Reducing overshoot or oscillation158
- H02P 8/04Arrangements for starting125
- H02P 8/02Arrangements for controlling dynamo-electric motors rotating step by step: specially adapted for116
All 12 subgroupsShow fewer
- H02P 8/24Arrangements for stopping114
- H02P 8/40Special adaptations for controlling two or more stepping motors83
- H02P 8/42Arrangements for controlling dynamo-electric motors rotating step by step: characterised by non-stepper30
- H02P 8/005Arrangements for controlling dynamo-electric motors rotating step by step: of linear motors16
Recent patents
- Carriage apparatus, printing apparatus, and control method thereof29 Sep 2026US 12,746,768 B2Canon Kabushiki Kaisha
- Motor drive control device, motor unit, and motor drive control method15 Sep 2026US 12,738,869 B2MINEBEA MITSUMI Inc.
- Integrated flap control unit21 Jul 2026US 12,686,488 B2Archer Aviation Inc.
- Method for compensating for tolerances, play and elasticity in a motor-driven hydraulic valve16 Jun 2026US 12,655,920 B2Bucher Hydraulics AG
- Methods and apparatus to sense changes in a load of a stepper motor16 Jun 2026US 12,658,830 B2Texas Instruments Incorporated
- Integrated flap control unit24 Sep 2026US 2026/0285472 A1Archer Aviation Inc.
- Motor control system24 Sep 2026US 2026/0291414 A1Kabushiki Kaisha Toshiba
- Method, System, and Computer Program Product for Calibrating an Actuator17 Sep 2026US 2026/0280454 A1Bd Kiestra B. V.
- Image processing apparatus27 Aug 2026US 2026/0252008 A1Brother Kogyo Kabushiki Kaisha
- Method for monitoring the control of an electronically commutated electric machine20 Aug 2026US 2026/0246404 A1AUMOVIO Germany GmbH
Most cited
By later US patents
- Motor controlled surgical system and method having positional control1,313US 5,602,449 ASmith & Nephew Endoscopy, Inc. · 1997
- Brushless motor1,281US 5,563,481 ASmith & Nephew Endoscopy, Inc. · 1996
- Systems and methods of electric motor control930US 6,586,898 B2Magnon Engineering, Inc. · 2003
- Use of digital current ramping to reduce audible noise in stepper motor183US 6,208,107 B1Abbott Laboratories · 2001
- Occlusion detection using pulse-width modulation and medical device incorporating same123US 8,603,027 B2Medtronic MiniMed, Inc. · 2013