G11B 5/70
On a base layer
Official title: on a base layer
G11B5/70 (On a base layer) appears on 2,855 US grants and 1,298 published applications in this corpus.
Search patents in G11B- Granted patents
- 2,855
- Published applications
- 1,298
- Assignees
- 385
- Inventors
- 3,081
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 43 | 0 |
| 1978 | 49 | 0 |
| 1979 | 34 | 0 |
| 1980 | 35 | 0 |
| 1981 | 55 | 0 |
| 1982 | 54 | 0 |
| 1983 | 86 | 0 |
| 1984 | 78 | 0 |
| 1985 | 96 | 0 |
| 1986 | 100 | 0 |
| 1987 | 143 | 0 |
| 1988 | 119 | 0 |
| 1989 | 96 | 0 |
| 1990 | 63 | 0 |
| 1991 | 117 | 0 |
| 1992 | 108 | 0 |
| 1993 | 65 | 0 |
| 1994 | 49 | 0 |
| 1995 | 70 | 0 |
| 1996 | 91 | 0 |
| 1997 | 63 | 0 |
| 1998 | 60 | 0 |
| 1999 | 57 | 0 |
| 2000 | 68 | 0 |
| 2001 | 36 | 22 |
| 2002 | 30 | 53 |
| 2003 | 49 | 85 |
| 2004 | 59 | 112 |
| 2005 | 45 | 90 |
| 2006 | 51 | 69 |
| 2007 | 37 | 62 |
| 2008 | 37 | 25 |
| 2009 | 21 | 49 |
| 2010 | 24 | 34 |
| 2011 | 11 | 35 |
| 2012 | 21 | 24 |
| 2013 | 25 | 20 |
| 2014 | 17 | 23 |
| 2015 | 18 | 24 |
| 2016 | 19 | 24 |
| 2017 | 31 | 53 |
| 2018 | 35 | 75 |
| 2019 | 68 | 65 |
| 2020 | 64 | 76 |
| 2021 | 67 | 88 |
| 2022 | 113 | 44 |
| 2023 | 44 | 56 |
| 2024 | 31 | 40 |
| 2025 | 48 | 24 |
| 2026 | 23 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 5/706Characterised by the composition of the magnetic material1,240
- G11B 5/702Characterised by the bonding agent753
- G11B 5/714Characterised by the dimension of the magnetic particles441
- G11B 5/708Characterised by addition of non-magnetic particles to the layer420
- G11B 5/71Characterised by the lubricant354
- G11B 5/712Characterised by the surface treatment or coating of magnetic particles287
- G11B 5/716Characterised by two or more magnetic layers268
- G11B 5/7013Characterised by the dispersing agent110
Recent patents
- Dispersed iron oxide magnetic powder slurry and method for producing same6 Oct 2026US 12,753,089 B2Dowa Electronics Materials Co., Ltd.
- Servo recording apparatus, servo write head, method of producing a magnetic tape, and magnetic tape6 Oct 2026US 12,755,759 B2Sony Group Corporation
- Magnetic recording tape medium with conductive particle configuration and cartridge8 Sep 2026US 12,731,609 B2Sony Group Corporation
- Magnetic recording medium1 Sep 2026US 12,725,634 B2Sony Group Corporation
- Magnetic powder for magnetic recording medium, and production method thereof25 Aug 2026US 12,718,974 B2Dowa Electronics Materials Co., Ltd.
- Hard disk drive (hdd) components formed of an alloy, and related hdds and methods1 Oct 2026US 2026/0301768 A1
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus10 Sep 2026US 2026/0268933 A1FUJIFILM Corporation
- Bottle-brush architecture fluorinated lubricants10 Sep 2026US 2026/0268934 A1Western Digital Technologies, Inc.
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus10 Sep 2026US 2026/0268935 A1FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus27 Aug 2026US 2026/0253611 A1FUJIFILM Corporation
Most cited
By later US patents
- Magnetic recording medium and method of manufacturing the same168US 8,535,817 B2FUJIFILM Corporation · 2013
- Magnetic recording medium136US 5,645,917 AFuji Photo Film Co., Ltd. · 1997
- Magnetic recording medium132US 9,311,946 B2Hitachi Maxell, Ltd. · 2016
- Magnetic recording medium126US 6,254,964 B1Fuji Photo Film Co., Ltd. · 2001
- Magnetic recording medium125US 5,728,454 AFuji Photo Film Co., Ltd. · 1998