G11B 2220/00
Record carriers by type
G11B2220/00 (Record carriers by type) appears on 16,955 US grants and 13,918 published applications in this corpus.
Search patents in G11B- Granted patents
- 16,955
- Published applications
- 13,918
- Assignees
- 1,746
- Inventors
- 17,302
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 23 | 0 |
| 1977 | 16 | 0 |
| 1978 | 28 | 0 |
| 1979 | 29 | 0 |
| 1980 | 38 | 0 |
| 1981 | 28 | 0 |
| 1982 | 60 | 0 |
| 1983 | 49 | 0 |
| 1984 | 54 | 0 |
| 1985 | 92 | 0 |
| 1986 | 79 | 0 |
| 1987 | 118 | 0 |
| 1988 | 142 | 0 |
| 1989 | 196 | 0 |
| 1990 | 157 | 0 |
| 1991 | 142 | 0 |
| 1992 | 201 | 0 |
| 1993 | 246 | 0 |
| 1994 | 280 | 0 |
| 1995 | 317 | 0 |
| 1996 | 360 | 0 |
| 1997 | 364 | 0 |
| 1998 | 546 | 0 |
| 1999 | 509 | 0 |
| 2000 | 558 | 0 |
| 2001 | 616 | 441 |
| 2002 | 657 | 1121 |
| 2003 | 678 | 1018 |
| 2004 | 674 | 1326 |
| 2005 | 524 | 1379 |
| 2006 | 882 | 1396 |
| 2007 | 819 | 1554 |
| 2008 | 876 | 1305 |
| 2009 | 909 | 1005 |
| 2010 | 1038 | 877 |
| 2011 | 1117 | 722 |
| 2012 | 1002 | 517 |
| 2013 | 804 | 328 |
| 2014 | 600 | 229 |
| 2015 | 321 | 152 |
| 2016 | 198 | 101 |
| 2017 | 119 | 83 |
| 2018 | 87 | 70 |
| 2019 | 100 | 50 |
| 2020 | 72 | 48 |
| 2021 | 43 | 30 |
| 2022 | 40 | 36 |
| 2023 | 34 | 53 |
| 2024 | 47 | 46 |
| 2025 | 40 | 23 |
| 2026 | 26 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 2220/20Disc-shaped record carriersIndexing code13,762
- G11B 2220/90Tape-like record carriersIndexing code3,842
- G11B 2220/40Combinations of multiple record carriersIndexing code2,043
- G11B 2220/60Solid state mediaIndexing code1,857
- G11B 2220/17Card-like record carriersIndexing code70
- G11B 2220/80Indexing information stored in optical or magnetic or other strip attached toIndexing code51
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
- Reproduction device, reproduction method, and recording medium17 Sep 2026US 2026/0281411 A1Saturn Licensing LLC
- Reproduction device, reproduction method, and recording medium27 Aug 2026US 2026/0254918 A1Saturn Licensing 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
- Memory system with multiple striping of raid groups and method for performing the same7 May 2026US 2026/0126925 A1Innovations In Memory LLC
Most cited
By later US patents
- System of device independent file directories using a tag between the directories and file descriptors that migrate with the files1,137US 5,333,315 ADigital Equipment Corporation · 1994
- Television schedule system1,133US 5,353,121 AStarsight Telecast, Inc. · 1994
- Multimedia time warping system1,079US 6,233,389 B1TiVo Inc. · 2001
- System and process for VCR scheduling1,066US 4,977,455 AInsight Telecast, Inc. · 1990
- Video communications system having a remotely controlled central source of video and audio data1,037US 4,949,187 A1990