G11B 2220/2508
Magnetic discs
G11B2220/2508 (Magnetic discs) appears on 2,390 US grants and 2,230 published applications in this corpus.
Search patents in G11B- Granted patents
- 2,390
- Published applications
- 2,230
- Assignees
- 373
- Inventors
- 3,363
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 9 | 0 |
| 1986 | 9 | 0 |
| 1987 | 8 | 0 |
| 1988 | 8 | 0 |
| 1989 | 15 | 0 |
| 1990 | 7 | 0 |
| 1991 | 5 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 8 | 0 |
| 1996 | 13 | 0 |
| 1997 | 11 | 0 |
| 1998 | 23 | 0 |
| 1999 | 19 | 0 |
| 2000 | 40 | 0 |
| 2001 | 41 | 24 |
| 2002 | 49 | 112 |
| 2003 | 72 | 72 |
| 2004 | 44 | 129 |
| 2005 | 43 | 127 |
| 2006 | 97 | 203 |
| 2007 | 120 | 201 |
| 2008 | 113 | 167 |
| 2009 | 158 | 247 |
| 2010 | 183 | 203 |
| 2011 | 371 | 293 |
| 2012 | 213 | 129 |
| 2013 | 219 | 109 |
| 2014 | 176 | 44 |
| 2015 | 69 | 24 |
| 2016 | 40 | 12 |
| 2017 | 21 | 9 |
| 2018 | 18 | 9 |
| 2019 | 17 | 16 |
| 2020 | 19 | 15 |
| 2021 | 9 | 5 |
| 2022 | 16 | 18 |
| 2023 | 15 | 24 |
| 2024 | 18 | 23 |
| 2025 | 24 | 13 |
| 2026 | 12 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Switch device and hard disk device1 Sep 2026US 12,726,194 B2Rohm Co., Ltd.
- Optical signal transmission in a hard disk drive25 Aug 2026US 12,718,840 B2Seagate Technology LLC
- Increased VCM current resolution during track follow to decrease NRRO11 Aug 2026US 12,706,116 B2Western Digital Technologies, Inc.
- Disk device with exposed inner surface regions for improved cover coupling4 Aug 2026US 12,700,427 B2Kabushiki Kaisha Toshiba
- Near field transducers having magnetic inlays for improved heat-assisted magnetic recording28 Jul 2026US 12,694,897 B1Seagate Technology LLC
- Air bearing design for high oxygen partial pressure for heat-assisted magnetic recording30 Jul 2026US 2026/0221152 A1Western Digital Technologies, Inc.
- Disk device16 Jul 2026US 2026/0204284 A1Kabushiki Kaisha Toshiba
- Magnetic disk device25 Dec 2025US 2025/0391426 A1Kabushiki Kaisha Toshiba
- Disk device4 Sep 2025US 2025/0279119 A1Kabushiki Kaisha Toshiba
- Fine actuator reaction force cancellation flexible suspension21 Aug 2025US 2025/0266059 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Integration of music from a personal library with real-time information1,026US 6,192,340 B12001
- Optical disc having an area storing original and user chain information specifying at least part of a video object stored on the disc, and a computer program and recording apparatus for recording and editing the chain information540US 6,181,870 B2Matushita Electric Industrial Co., Ltd. · 2001
- Storage controller configured to select unused regions of a storage device for data storage according to head position524US 6,789,162 B1Sun Microsystems, Inc. · 2004
- Video monitoring and conferencing system518US 5,625,410 A1997
- Voice activated controller for recording and retrieving audio/video programs448US 6,643,620 B1Matsushita Electric Industrial Co., Ltd. · 2003