G11B 20/1217
On discs
Official title: {on discs}
G11B20/1217 (On discs) appears on 4,509 US grants and 3,399 published applications in this corpus.
Search patents in G11B- Granted patents
- 4,509
- Published applications
- 3,399
- Assignees
- 476
- Inventors
- 4,333
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 13 | 0 |
| 1986 | 11 | 0 |
| 1987 | 18 | 0 |
| 1988 | 20 | 0 |
| 1989 | 23 | 0 |
| 1990 | 26 | 0 |
| 1991 | 17 | 0 |
| 1992 | 34 | 0 |
| 1993 | 53 | 0 |
| 1994 | 75 | 0 |
| 1995 | 74 | 0 |
| 1996 | 89 | 0 |
| 1997 | 109 | 0 |
| 1998 | 207 | 0 |
| 1999 | 170 | 0 |
| 2000 | 208 | 0 |
| 2001 | 198 | 89 |
| 2002 | 155 | 237 |
| 2003 | 167 | 218 |
| 2004 | 171 | 290 |
| 2005 | 111 | 289 |
| 2006 | 254 | 301 |
| 2007 | 240 | 446 |
| 2008 | 268 | 396 |
| 2009 | 232 | 198 |
| 2010 | 229 | 143 |
| 2011 | 238 | 118 |
| 2012 | 198 | 101 |
| 2013 | 163 | 60 |
| 2014 | 117 | 84 |
| 2015 | 92 | 63 |
| 2016 | 104 | 80 |
| 2017 | 74 | 76 |
| 2018 | 79 | 48 |
| 2019 | 76 | 40 |
| 2020 | 50 | 35 |
| 2021 | 40 | 22 |
| 2022 | 24 | 17 |
| 2023 | 20 | 15 |
| 2024 | 16 | 11 |
| 2025 | 18 | 12 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 2020/1218Wherein the formatting concerns a specific area of the discIndexing code1,666
- G11B 20/1258Where blocks are arranged within multiple radial zones708
- G11B 20/1252For discontinuous data528
- G11B 20/1251For continuous data467
- G11B 2020/1259With rom/ram areasIndexing code178
- G11B 20/1254For mixed data, i.e. continuous and discontinuous data155
- G11B 2020/1257Count key data [ckd] formatIndexing code16
- G11B 2020/1255Fixed block architecture [fba] formatIndexing code8
All 9 subgroupsShow fewer
Recent patents
- Magnetic disk device and method18 Aug 2026US 12,711,984 B2Kabushiki Kaisha Toshiba
- Staggered bits magnetic recording21 Jul 2026US 12,688,865 B2Seagate Technology LLC
- Magnetic disk device26 May 2026US 12,640,166 B2Kabushiki Kaisha Toshiba
- Magnetic disk device and DOL setting method28 Apr 2026US 12,614,566 B2Kabushiki Kaisha Toshiba
- Magnetic disk apparatus and method10 Mar 2026US 12,573,426 B2Kabushiki Kaisha Toshiba
- Magnetic disk device and data recording method24 Sep 2026US 2026/0290397 A1Kabushiki Kaisha Toshiba
- Magnetic disk device and method of controlling the same10 Sep 2026US 2026/0268937 A1Kabushiki Kaisha Toshiba
- Magnetic disk device and dol setting method13 Aug 2026US 2026/0237405 A1Kabushiki Kaisha Toshiba
- Magnetic disk apparatus and method30 Jul 2026US 2026/0221159 A1Kabushiki Kaisha Toshiba
- Magnetic disk device and method18 Jun 2026US 2026/0171109 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Data storage system controlled remote data mirroring with respectively maintained data indices1,377US 5,544,347 AEMC Corporation · 1996
- Remote data mirroring1,035US 5,742,792 AEMC Corporation · 1998
- 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
- System and method for disk mapping and data retrieval463US 5,206,939 AEMC Corporation · 1993
- Asynchronous remote data mirroring system444US 6,502,205 B1EMC Corporation · 2002