G11B 5/672
Having different compositions in a plurality of magnetic layers
Official title: {having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements}
G11B5/672 (Having different compositions in a plurality of magnetic layers) appears on 396 US grants and 392 published applications in this corpus.
Search patents in G11B- Granted patents
- 396
- Published applications
- 392
- Assignees
- 93
- Inventors
- 688
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 10 | 0 |
| 1988 | 2 | 0 |
| 1989 | 9 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 1 | 0 |
| 1998 | 13 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 1 |
| 2002 | 11 | 13 |
| 2003 | 13 | 26 |
| 2004 | 22 | 29 |
| 2005 | 18 | 30 |
| 2006 | 13 | 33 |
| 2007 | 17 | 21 |
| 2008 | 13 | 25 |
| 2009 | 17 | 30 |
| 2010 | 11 | 36 |
| 2011 | 16 | 24 |
| 2012 | 16 | 21 |
| 2013 | 19 | 9 |
| 2014 | 33 | 15 |
| 2015 | 18 | 18 |
| 2016 | 22 | 11 |
| 2017 | 14 | 10 |
| 2018 | 16 | 7 |
| 2019 | 4 | 5 |
| 2020 | 6 | 4 |
| 2021 | 4 | 4 |
| 2022 | 4 | 2 |
| 2023 | 2 | 5 |
| 2024 | 1 | 2 |
| 2025 | 6 | 5 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Magnetic recording medium and magnetic storage apparatus20 Jan 2026US 12,531,087 B2Resonac Hard Disk Corporation
- Ultrafast pulse assisted magnetic recording6 Jan 2026US 12,518,786 B1Seagate Technology LLC
- Magnetic recording medium, magnetic storage apparatus, and method for manufacturing magnetic recording medium18 Nov 2025US 12,475,923 B2Resonac Hard Disk Corporation
- Magnetic recording medium and magnetic recording device4 Nov 2025US 12,462,838 B2Kabushiki Kaisha Toshiba
- Magnetic recording medium with varying composition ratio and magnetic recording device21 Oct 2025US 12,451,159 B2Kabushiki Kaisha Toshiba
- Magnetic recording and reproducing apparatus1 Oct 2026US 2026/0301767 A1Resonac Hard Disk Corporation
- Magnetic recording medium with magnetic capping layer containing carbon and a magnetic recording apparatus for use therewith20 Aug 2026US 2026/0245586 A1Western Digital Technologies, Inc.
- Magnetic recording medium and magnetic storage device30 Jul 2026US 2026/0221153 A1Resonac Hard Disk Corporation
- Magnetic recording medium, method of manufacturing magnetic recording medium, and magnetic storage device7 May 2026US 2026/0128061 A1Resonac Hard Disk Corporation
- Ultrafast pulse assisted magnetic recording23 Apr 2026US 2026/0112391 A1Seagate Technology LLC
Most cited
By later US patents
- Magnetic recording media and magnetic recording read-back system which uses such media113US 5,851,643 AHitachi, Ltd. · 1998
- Magnetic recording disk with composite perpendicular recording layer99US 6,468,670 B1International Business Machines Corporation · 2002
- Magnetic media with improved exchange coupling82US 7,070,870 B2Komag, Inc. · 2006
- Systems and methods for controlling damping of magnetic media for assisted magnetic recording79US 8,658,292 B1Western Digital Technologies, Inc. · 2014
- Composite magnetic recording medium78US 8,530,065 B1WD Media, LLC · 2013