G11B 2220/21
Characterised in that the disc is of read-only, rewritable, or recordable type
Official title: characterised in that the disc is of read-only, rewritable, or recordable type
G11B2220/21 (Characterised in that the disc is of read-only, rewritable, or recordable type) appears on 4,501 US grants and 4,089 published applications in this corpus.
Search patents in G11B- Granted patents
- 4,501
- Published applications
- 4,089
- Assignees
- 453
- Inventors
- 3,906
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 12 | 0 |
| 1989 | 20 | 0 |
| 1990 | 19 | 0 |
| 1991 | 15 | 0 |
| 1992 | 33 | 0 |
| 1993 | 32 | 0 |
| 1994 | 48 | 0 |
| 1995 | 66 | 0 |
| 1996 | 59 | 0 |
| 1997 | 78 | 0 |
| 1998 | 117 | 0 |
| 1999 | 118 | 0 |
| 2000 | 154 | 0 |
| 2001 | 195 | 171 |
| 2002 | 206 | 437 |
| 2003 | 245 | 380 |
| 2004 | 251 | 550 |
| 2005 | 187 | 440 |
| 2006 | 354 | 496 |
| 2007 | 332 | 448 |
| 2008 | 359 | 402 |
| 2009 | 343 | 235 |
| 2010 | 323 | 151 |
| 2011 | 378 | 216 |
| 2012 | 214 | 72 |
| 2013 | 185 | 25 |
| 2014 | 61 | 23 |
| 2015 | 27 | 15 |
| 2016 | 22 | 6 |
| 2017 | 11 | 7 |
| 2018 | 8 | 5 |
| 2019 | 2 | 4 |
| 2020 | 4 | 1 |
| 2021 | 3 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Handling write commands during a refresh operation in a shingled magnetic recording drive26 May 2026US 12,640,165 B2Kabushiki Kaisha Toshiba
- Wearable recording system with memory designation19 Mar 2024US 11,937,017 B2
- Disk device with ramps5 Sep 2023US 11,749,308 B2Kabushiki Kaisha Toshiba
- Partial adjustment of disk drive areal density to compensate for head or surface degradation30 Aug 2022US 11,430,471 B1Seagate Technology LLC
- Computing device13 Jul 2021US 11,061,566 B2
- Handling write commands during a refresh operation in a shingled magnetic recording drive15 Jan 2026US 2026/0018186 A1Kabushiki Kaisha Toshiba
- Wearable recording system with memory designation13 Jun 2024US 2024/0195942 A1Stellar, LLC
- Data recording device and data recording method31 Aug 2023US 2023/0274765 A1
- Disk device with ramps23 Mar 2023US 2023/0088522 A1Kabushiki Kaisha Toshiba
- Wearable Recording System With Memory Designation8 Jul 2021US 2021/0211611 A1
Most cited
By later US patents
- Multimedia time warping system1,079US 6,233,389 B1TiVo Inc. · 2001
- Video communications system having a remotely controlled central source of video and audio data1,037US 4,949,187 A1990
- Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels1,021US 5,943,422 AIntertrust Technologies Corporation · 1999
- Apparatus and method for an on demand data delivery system for the preview, selection, retrieval and reproduction at a remote location of previously recorded or programmed materials789US 5,418,713 A1995
- Multimedia search system using a plurality of entry path means which indicate interrelatedness of information744US 5,241,671 AEncyclopaedia Britannica, Inc. · 1993