G11B 5/65
Characterised by its composition
Official title: characterised by its composition (G11B5/66 takes precedence)
G11B5/65 (Characterised by its composition) appears on 780 US grants and 613 published applications in this corpus.
Search patents in G11B- Granted patents
- 780
- Published applications
- 613
- Assignees
- 190
- Inventors
- 1,332
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 9 | 0 |
| 1984 | 6 | 0 |
| 1985 | 10 | 0 |
| 1986 | 8 | 0 |
| 1987 | 15 | 0 |
| 1988 | 12 | 0 |
| 1989 | 16 | 0 |
| 1990 | 11 | 0 |
| 1991 | 20 | 0 |
| 1992 | 15 | 0 |
| 1993 | 13 | 0 |
| 1994 | 8 | 0 |
| 1995 | 13 | 0 |
| 1996 | 23 | 0 |
| 1997 | 21 | 0 |
| 1998 | 31 | 0 |
| 1999 | 29 | 0 |
| 2000 | 27 | 0 |
| 2001 | 25 | 12 |
| 2002 | 23 | 33 |
| 2003 | 27 | 42 |
| 2004 | 29 | 53 |
| 2005 | 29 | 53 |
| 2006 | 22 | 37 |
| 2007 | 26 | 32 |
| 2008 | 19 | 42 |
| 2009 | 16 | 21 |
| 2010 | 23 | 39 |
| 2011 | 28 | 21 |
| 2012 | 14 | 22 |
| 2013 | 16 | 24 |
| 2014 | 24 | 19 |
| 2015 | 17 | 25 |
| 2016 | 18 | 18 |
| 2017 | 13 | 13 |
| 2018 | 12 | 14 |
| 2019 | 13 | 16 |
| 2020 | 19 | 11 |
| 2021 | 16 | 20 |
| 2022 | 15 | 8 |
| 2023 | 11 | 14 |
| 2024 | 10 | 14 |
| 2025 | 12 | 5 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tri-level magnetic recording of bits21 Apr 2026US 12,609,135 B1Seagate Technology LLC
- Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium and glass spacer for magnetic recording and reproducing apparatus17 Mar 2026US 12,579,997 B2Hoya Corporation
- Method for manufacturing magnetic disk, magnetic disk, and magnetic disk precursor27 Jan 2026US 12,537,025 B2Hoya 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
- Non-aligned exchange-de-coupled dual-layer system for increased areal-density8 Oct 2026US 2026/0311723 A1Seagate Technology LLC
- 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 with amorphous metallic alloy overcoat and magnetic recording apparatus for use therewith6 Aug 2026US 2026/0229251 A1Western Digital Technologies, Inc.
- Glass for magnetic recording medium substrate, magnetic recording medium substrate, magnetic recording medium and glass spacer for magnetic recording and reproducing apparatus11 Jun 2026US 2026/0162678 A1Hoya Corporation
- Magnetic recording medium and cartridge12 Feb 2026US 2026/0045274 A1Sony Group Corporation
Most cited
By later US patents
- Magnetic recording medium138US 4,425,404 AMatsushita Electric Industrial Co., Ltd. · 1984
- Manufacture method of high coercivity FePt-Si3N4 granular composite thin films127US 6,183,606 B2National Science Council of Republic of China · 2001
- 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
- Patterned magnetic media and method of making the same using selective oxidation88US 6,168,845 AInternational Business Machines Corporation · 2001