G11B 5/736
Non-magnetic layer under a soft magnetic layer
Official title: {Non-magnetic layer under a soft magnetic layer, e.g. between a substrate and a soft magnetic underlayer [SUL] or a keeper layer (magnetic recording media substrates G11B5/739)}
G11B5/736 (Non-magnetic layer under a soft magnetic layer) appears on 91 US grants and 106 published applications in this corpus.
Search patents in G11B- Granted patents
- 91
- Published applications
- 106
- Assignees
- 42
- Inventors
- 240
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 3 |
| 2004 | 3 | 4 |
| 2005 | 1 | 6 |
| 2006 | 5 | 7 |
| 2007 | 1 | 4 |
| 2008 | 2 | 3 |
| 2009 | 2 | 6 |
| 2010 | 2 | 6 |
| 2011 | 3 | 2 |
| 2012 | 4 | 4 |
| 2013 | 3 | 5 |
| 2014 | 7 | 3 |
| 2015 | 4 | 3 |
| 2016 | 4 | 1 |
| 2017 | 2 | 2 |
| 2018 | 1 | 2 |
| 2019 | 3 | 9 |
| 2020 | 6 | 9 |
| 2021 | 8 | 13 |
| 2022 | 16 | 4 |
| 2023 | 3 | 1 |
| 2024 | 2 | 2 |
| 2025 | 5 | 5 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 5/7366For heat-assisted or thermally-assisted magnetic recording [hamr, tamr]18
- G11B 5/7361Two or more non-magnetic layers14
- G11B 5/7363Non-magnetic single underlayer comprising nickel13
- G11B 5/7364Non-magnetic single underlayer comprising chromium12
- G11B 5/7367Physical structure of underlayer5
- G11B 5/7365Non-magnetic single underlayer comprising a polymeric structure0
Recent patents
- Waveguide multilayer core structure for use in heat assisted magnetic recording29 Sep 2026US 12,749,503 B1Seagate Technology LLC
- Magnetic recording medium and cartridge7 Jul 2026US 12,676,168 B2Sony Group Corporation
- Media design and write technique for creating neutral polarity transition zones20 Jan 2026US 12,531,089 B2Seagate Technology LLC
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus30 Sep 2025US 12,431,163 B2FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus2 Sep 2025US 12,406,692 B2FUJIFILM Corporation
- Magnetic recording medium and cartridge9 Apr 2026US 2026/0100199 A1Sony Group Corporation
- Magnetic recording medium manufacturing method and magnetic read/write device28 Aug 2025US 2025/0273240 A1Resonac Hard Disk Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus9 Jan 2025US 2025/0014599 A1FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus9 Jan 2025US 2025/0014600 A1FUJIFILM Corporation
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus9 Jan 2025US 2025/0014601 A1FUJIFILM Corporation
Most cited
By later US patents
- Magnetic recording medium110US 9,542,967 B2Sony Corporation · 2017
- Perpendicular magnetic recording medium with an ordering temperature reducing layer89US 8,173,282 B1WD Media, LLC · 2012
- Multilayer-based magnetic media with hard ferromagnetic, anti-ferromagnetic, and soft ferromagnetic layers17US 6,753,072 B1Seagate Technology LLC · 2004
- Recording layer for heat assisted magnetic recording17US 8,507,114 B2Seagate Technology LLC · 2013
- Perpendicular magnetic recording media, manufacturing process of the same, and magnetic storage apparatus using the same14US 6,723,457 B2Hitachi, Ltd. · 2004