G11B 5/70678
Ferrites
Official title: {Ferrites}
G11B5/70678 (Ferrites) appears on 563 US grants and 421 published applications in this corpus.
Search patents in G11B- Granted patents
- 563
- Published applications
- 421
- Assignees
- 87
- Inventors
- 638
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 15 | 0 |
| 1986 | 10 | 0 |
| 1987 | 19 | 0 |
| 1988 | 21 | 0 |
| 1989 | 16 | 0 |
| 1990 | 5 | 0 |
| 1991 | 15 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 16 | 0 |
| 1997 | 13 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 5 | 2 |
| 2002 | 5 | 16 |
| 2003 | 10 | 23 |
| 2004 | 21 | 17 |
| 2005 | 8 | 16 |
| 2006 | 8 | 7 |
| 2007 | 5 | 7 |
| 2008 | 4 | 4 |
| 2009 | 3 | 10 |
| 2010 | 2 | 4 |
| 2011 | 2 | 8 |
| 2012 | 7 | 10 |
| 2013 | 5 | 5 |
| 2014 | 5 | 9 |
| 2015 | 4 | 11 |
| 2016 | 10 | 6 |
| 2017 | 12 | 15 |
| 2018 | 6 | 19 |
| 2019 | 16 | 35 |
| 2020 | 37 | 49 |
| 2021 | 24 | 49 |
| 2022 | 73 | 28 |
| 2023 | 21 | 24 |
| 2024 | 12 | 19 |
| 2025 | 23 | 13 |
| 2026 | 9 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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 powder for magnetic recording medium, and production method thereof25 Aug 2026US 12,718,974 B2Dowa Electronics Materials Co., Ltd.
- Magnetic recording medium and cartridge7 Jul 2026US 12,676,168 B2Sony Group Corporation
- Magnetic recording medium and cartridge2 Jun 2026US 12,646,531 B2Sony Group Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus10 Sep 2026US 2026/0268933 A1FUJIFILM Corporation
- Magnetic recording medium27 Aug 2026US 2026/0253612 A1Sony Group Corporation
- Magnetic recording medium13 Aug 2026US 2026/0237402 A1Sony Group Corporation
- Magnetic recording medium6 Aug 2026US 2026/0229252 A1Sony Group Corporation
- Magnetic recording medium30 Jul 2026US 2026/0221154 A1Sony Group Corporation
Most cited
By later US patents
- Magnetic tape and magnetic tape device121US 10,074,393 B2FUJIFILM Corporation · 2018
- Magnetic tape device and head tracking servo method119US 9,978,414 B1FUJIFILM Corporation · 2018
- Longitudinal magnetic coated recording medium113US 4,746,569 AFujitsu Limited · 1988
- Plate-like ferrite particles with magnetoplumbite structure and magnetic card using the same112US 6,099,957 AToda Kogyo Corporation · 2000
- Hexagonal ferrite magnetic powder for magnetic recording, method for producing hexagonal ferrite magnetic particles, and magnetic recording medium112US 9,748,026 B2FUJIFILM Corporation · 2017