G11B 5/5521
Across disk tracks
Official title: {across disk tracks (spiral track following G11B5/596)}
G11B5/5521 (Across disk tracks) appears on 4,408 US grants and 1,997 published applications in this corpus.
Search patents in G11B- Granted patents
- 4,408
- Published applications
- 1,997
- Assignees
- 488
- Inventors
- 5,105
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 24 | 0 |
| 1977 | 26 | 0 |
| 1978 | 27 | 0 |
| 1979 | 23 | 0 |
| 1980 | 22 | 0 |
| 1981 | 19 | 0 |
| 1982 | 23 | 0 |
| 1983 | 17 | 0 |
| 1984 | 24 | 0 |
| 1985 | 35 | 0 |
| 1986 | 48 | 0 |
| 1987 | 73 | 0 |
| 1988 | 58 | 0 |
| 1989 | 73 | 0 |
| 1990 | 68 | 0 |
| 1991 | 66 | 0 |
| 1992 | 64 | 0 |
| 1993 | 65 | 0 |
| 1994 | 67 | 0 |
| 1995 | 68 | 0 |
| 1996 | 69 | 0 |
| 1997 | 91 | 0 |
| 1998 | 171 | 0 |
| 1999 | 190 | 0 |
| 2000 | 199 | 0 |
| 2001 | 149 | 65 |
| 2002 | 163 | 196 |
| 2003 | 207 | 175 |
| 2004 | 211 | 167 |
| 2005 | 203 | 161 |
| 2006 | 218 | 148 |
| 2007 | 142 | 145 |
| 2008 | 155 | 142 |
| 2009 | 157 | 119 |
| 2010 | 110 | 93 |
| 2011 | 89 | 41 |
| 2012 | 100 | 44 |
| 2013 | 68 | 47 |
| 2014 | 111 | 44 |
| 2015 | 124 | 54 |
| 2016 | 83 | 35 |
| 2017 | 57 | 33 |
| 2018 | 69 | 31 |
| 2019 | 58 | 31 |
| 2020 | 67 | 43 |
| 2021 | 58 | 34 |
| 2022 | 50 | 36 |
| 2023 | 40 | 39 |
| 2024 | 32 | 28 |
| 2025 | 44 | 28 |
| 2026 | 33 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 5/5526Control therefor1,944
- G11B 5/5552Using fine positioning means for track acquisition separate from the coarse positioning984
- G11B 5/5582System adaptation for working during or after external perturbation492
- G11B 5/5569Details of specially adapted mobile parts339
- G11B 5/5565System adaptation for compensation of variations of physical parameters217
- G11B 5/5586Minimising seek noise30
Recent patents
- Solder tack bonding of hard disk drive actuator arm assemblies6 Oct 2026US 12,755,757 B2Seagate Technology LLC
- Data storage device with assistive bursts in servo sectors15 Sep 2026US 12,738,294 B2Western Digital Technologies, Inc.
- Anticipatory track switching microactuator track switch to enable track profile interpolation and control15 Sep 2026US 12,738,295 B1Seagate Technology LLC
- Magnetic disk device and method15 Sep 2026US 12,738,296 B1Kabushiki Kaisha Toshiba
- Actuator materials and designs for hard disk drives8 Sep 2026US 12,731,607 B1Seagate Technology LLC
- Magnetic disk device and signal synchronization method17 Sep 2026US 2026/0279394 A1Kabushiki Kaisha Toshiba
- Solder tack bonding of hard disk drive actuator arm assemblies27 Aug 2026US 2026/0253610 A1Seagate Technology LLC
- Data storage device with real time fly height predictor for different servo seek sequences and other drive operations23 Jul 2026US 2026/0212885 A1Western Digital Technologies, Inc.
- Disk device9 Jul 2026US 2026/0196243 A1Kabushiki Kaisha Toshiba
- Servo control system25 Jun 2026US 2026/0179651 A1Fanuc Corporation
Most cited
By later US patents
- Class AB H-bridge using current sensing MOSFETs1,035US 6,445,530 B1Seagate Technology LLC · 2002
- PRML sampled data channel synchronous servo detector294US 5,384,671 AQuantum Corporation · 1995
- Sector architecture for fixed block disk drive234US 5,523,903 AInternational Business Machines Corporation · 1996
- Slider with temperature responsive transducer positioning229US 5,991,113 ASeagate Technology LLC · 1999
- Collocated rotating flexure microactuator for dual-stage servo in disk drives225US 6,376,964 B1Read-Rite Corporation · 2002