G11B 5/716
Characterised by two or more magnetic layers
Official title: characterised by two or more magnetic layers
G11B5/716 (Characterised by two or more magnetic layers) appears on 268 US grants and 66 published applications in this corpus.
Search patents in G11B- Granted patents
- 268
- Published applications
- 66
- Assignees
- 59
- Inventors
- 385
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 9 | 0 |
| 1982 | 1 | 0 |
| 1983 | 8 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 18 | 0 |
| 1992 | 24 | 0 |
| 1993 | 9 | 0 |
| 1994 | 12 | 0 |
| 1995 | 15 | 0 |
| 1996 | 18 | 0 |
| 1997 | 10 | 0 |
| 1998 | 15 | 0 |
| 1999 | 4 | 0 |
| 2000 | 11 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 5 |
| 2003 | 4 | 4 |
| 2004 | 1 | 11 |
| 2005 | 6 | 6 |
| 2006 | 5 | 3 |
| 2007 | 3 | 3 |
| 2008 | 3 | 3 |
| 2009 | 2 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 0 |
| 2019 | 2 | 3 |
| 2020 | 4 | 7 |
| 2021 | 7 | 11 |
| 2022 | 6 | 1 |
| 2023 | 4 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for forming underlayer for tape media3 Mar 2026US 12,567,442 B2International Business Machines Corporation
- Process for forming tape media having synergistic magnetic recording layer and underlayer18 Jun 2024US 12,014,760 B2International Business Machines Corporation
- Process for forming magnetic recording layer for tape media17 Oct 2023US 11,790,942 B2International Business Machines Corporation
- Magnetic stack including non-magnetic seed layer for hard disk drive media19 Sep 2023US 11,763,845 B2Seagate Technology LLC
- Tape media having synergistic magnetic recording layer and underlayer5 Sep 2023US 11,749,306 B2International Business Machines Corporation
- Magnetic stack including non-magnetic seed layer for hard disk drive media8 Jun 2023US 2023/0178106 A1Seagate Technology LLC
- Process for forming underlayer for tape media27 Oct 2022US 2022/0343945 A1International Business Machines Corporation
- Tape media having synergistic magnetic recording layer and underlayer16 Dec 2021US 2021/0390980 A1International Business Machines Corporation
- Magnetic recording medium, magnetic storage apparatus, and method of manufacturing magnetic recording medium19 Aug 2021US 2021/0256998 A1Showa Denko K. K.
- Magnetic recording cartridge5 Aug 2021US 2021/0241797 A1Sony Group Corporation
Most cited
By later US patents
- Magnetic recording medium136US 5,645,917 AFuji Photo Film Co., Ltd. · 1997
- Magnetic recording medium125US 5,728,454 AFuji Photo Film Co., Ltd. · 1998
- Magnetic recording medium comprising two magnetic layers of hexagonal ferrite magnetic particles and binder wherein the easy axes of the particle is specified111US 5,419,938 ATDK Corporation · 1995
- Magnetic recording medium111US 5,827,600 AFuji Photo Film Co., Ltd. · 1998
- Magnetic recording medium107US 6,268,043 B1Sony Corporation · 2001