G11B 5/022
H-bridge head driver circuit, the "h" configuration allowing to inverse the current
Official title: {H-Bridge head driver circuit, the "H" configuration allowing to inverse the current direction in the head}
G11B5/022 (H-bridge head driver circuit, the "h" configuration allowing to inverse the current) appears on 179 US grants and 95 published applications in this corpus.
Search patents in G11B- Granted patents
- 179
- Published applications
- 95
- Assignees
- 62
- Inventors
- 265
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 9 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 5 | 0 |
| 2000 | 10 | 0 |
| 2001 | 20 | 5 |
| 2002 | 15 | 8 |
| 2003 | 11 | 25 |
| 2004 | 10 | 11 |
| 2005 | 12 | 9 |
| 2006 | 14 | 5 |
| 2007 | 3 | 2 |
| 2008 | 4 | 5 |
| 2009 | 3 | 5 |
| 2010 | 8 | 2 |
| 2011 | 3 | 0 |
| 2012 | 1 | 1 |
| 2013 | 2 | 5 |
| 2014 | 5 | 2 |
| 2015 | 4 | 2 |
| 2016 | 3 | 4 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 2 | 0 |
| 2025 | 1 | 2 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Class AB H-bridge using current sensing MOSFETs1,035US 6,445,530 B1Seagate Technology LLC · 2002
- Disk drive comprising current sense circuitry for a voice coil motor114US 6,850,383 B1Western Digital Technologies, Inc. · 2005
- Disk drive comprising oscillators and counters for sensing current in a voice coil motor113US 6,850,384 B1Western Digital Technologies, Inc. · 2005
- Disk drive controlling ripple current of a voice coil motor when driven by a PWM driver110US 6,965,488 B1Western Digital Technologies, Inc. · 2005
- PWM/linear driver for disk drive voice coil actuator100US 5,838,515 AQuantum Corporation · 1998