G11B 5/737
Physical structure of underlayer
Official title: {Physical structure of underlayer, e.g. texture}
G11B5/737 (Physical structure of underlayer) appears on 296 US grants and 289 published applications in this corpus.
Search patents in G11B- Granted patents
- 296
- Published applications
- 289
- Assignees
- 75
- Inventors
- 496
- Latest grant
- 8 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 7 | 0 |
| 1998 | 15 | 0 |
| 1999 | 11 | 0 |
| 2000 | 12 | 0 |
| 2001 | 7 | 7 |
| 2002 | 7 | 16 |
| 2003 | 23 | 25 |
| 2004 | 23 | 23 |
| 2005 | 18 | 32 |
| 2006 | 13 | 26 |
| 2007 | 12 | 21 |
| 2008 | 9 | 23 |
| 2009 | 16 | 14 |
| 2010 | 11 | 16 |
| 2011 | 10 | 11 |
| 2012 | 8 | 17 |
| 2013 | 15 | 4 |
| 2014 | 13 | 7 |
| 2015 | 13 | 16 |
| 2016 | 11 | 5 |
| 2017 | 7 | 2 |
| 2018 | 5 | 11 |
| 2019 | 5 | 6 |
| 2020 | 6 | 1 |
| 2021 | 2 | 1 |
| 2022 | 4 | 0 |
| 2023 | 2 | 1 |
| 2024 | 1 | 3 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Media structure with selected segregants configured to improve heat-assisted magnetic recording8 Apr 2025US 12,272,392 B2Western Digital Technologies, Inc.
- Magnetic recording media with dead magnetic layer31 Dec 2024US 12,183,377 B2Western Digital Technologies, Inc.
- Magnetic recording media with tungsten pre-seed layer7 Nov 2023US 11,810,605 B2Western Digital Technologies, Inc.
- Magnetic recording medium4 Apr 2023US 11,621,020 B2Sony Corporation
- Protective layer for mitigating protruding defects in magnetic tape recording media1 Nov 2022US 11,488,629 B2International Business Machines Corporation
- Production method of magnetic recording medium, and magnetic recording and reproducing device26 Feb 2026US 2026/0057905 A1Resonac Hard Disk Corporation
- Magnetic recording media with dead magnetic layer5 Dec 2024US 2024/0404554 A1Western Digital Technologies, Inc.
- Magnetic Read Sensors Having Reduced Signal Imbalance11 Jul 2024US 2024/0233762 A1Western Digital Technologies, Inc.
- Media structure with selected segregants configured to improve heat-assisted magnetic recording29 Feb 2024US 2024/0071416 A1Western Digital Technologies, Inc.
- Magnetic recording media with tungsten pre-seed layer30 Mar 2023US 2023/0099090 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Perpendicular magnetic recording medium with an ordering temperature reducing layer89US 8,173,282 B1WD Media, LLC · 2012
- Method of making high performance, low noise isotropic magnetic media including a chromium underlayer84US 6,156,404 AKomag, Inc. · 2000
- Magnetic recording medium with B2 structured underlayer and a cobalt-based magnetic layer77US 5,693,426 ACarnegie Mellon University · 1997
- Method for preparing a substrate for a magnetic disk77US 6,143,375 AKomag, Inc. · 2000
- Multi-layer texture layer75US 6,482,505 B1Komag, Inc. · 2002