H02P 25/034
Voice coil motors
Official title: Voice coil motors (voice coil motors driven by DC H02P7/025)
H02P25/034 (Voice coil motors) appears on 275 US grants and 239 published applications in this corpus.
Search patents in H02P- Granted patents
- 275
- Published applications
- 239
- Assignees
- 148
- Inventors
- 513
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 13 | 0 |
| 2001 | 5 | 0 |
| 2002 | 4 | 7 |
| 2003 | 3 | 3 |
| 2004 | 6 | 3 |
| 2005 | 3 | 6 |
| 2006 | 5 | 5 |
| 2007 | 7 | 10 |
| 2008 | 4 | 4 |
| 2009 | 6 | 11 |
| 2010 | 7 | 9 |
| 2011 | 9 | 10 |
| 2012 | 9 | 6 |
| 2013 | 10 | 10 |
| 2014 | 13 | 16 |
| 2015 | 15 | 18 |
| 2016 | 15 | 13 |
| 2017 | 12 | 10 |
| 2018 | 13 | 10 |
| 2019 | 9 | 13 |
| 2020 | 13 | 10 |
| 2021 | 12 | 11 |
| 2022 | 10 | 11 |
| 2023 | 13 | 18 |
| 2024 | 17 | 16 |
| 2025 | 14 | 6 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Voice coil motor, method and device for controlling voice coil motor14 Apr 2026US 12,603,594 B2Goertek Inc.
- Linear resonance scanning apparatus and method of scanning30 Dec 2025US 12,510,750 B2Occuity Limited
- Control apparatus including driving unit, lens apparatus, image pickup apparatus, control method, and storage medium16 Sep 2025US 12,416,782 B2Canon Kabushiki Kaisha
- Dynamic bandwidth adjustment and electromagnetic damping12 Aug 2025US 12,387,576 B2Google Inc.
- Method of operating a voice coil motor and corresponding control circuit12 Aug 2025US 12,387,756 B2STMicroelectronics International N. V.
- Vibration Device23 Jul 2026US 2026/0213689 A1Foster Electric Company, Limited
- Voice coil motor driving circuit with adaptive control of the supply voltage11 Jun 2026US 2026/0163505 A1Samsung Electro-Mechanics Co., Ltd.
- Method of operating hard disk drives, corresponding control circuit, hard disk drive and processing device9 Apr 2026US 2026/0100200 A1STMicroelectronics International N. V.
- Camera Actuator for Lens and Sensor Shifting21 Aug 2025US 2025/0264688 A1Apple Inc.
- System for driving actuator14 Aug 2025US 2025/0258385 A1Lx Semicon Co., Ltd.
Most cited
By later US patents
- Hall-effect based linear motor controller1,018US 8,084,969 B2Allegro MicroSystems, LLC · 2011
- Disk drive utilizing Bemf of spindle motor to increase VCM voltage during seeks123US 6,094,020 AWestern Digital Corporation · 2000
- PWM/linear driver for disk drive voice coil actuator100US 5,838,515 AQuantum Corporation · 1998
- Self-calibration algorithms in a small motor driver IC with an integrated position sensor90US 7,936,144 B2Allegro MicroSystems, LLC · 2011
- Method and circuit for determining the velocity of a data detector mechanism of a mass storage device, or the like, using a BEMF voltage in the associated voice coil60US 6,081,112 ASTMicroelectronics S.r. l. · 2000