G11B 5/465
Arrangements for demagnetisation of heads
G11B5/465 (Arrangements for demagnetisation of heads) appears on 100 US grants and 36 published applications in this corpus.
Search patents in G11B- Granted patents
- 100
- Published applications
- 36
- Assignees
- 42
- Inventors
- 224
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 10 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 1 |
| 2002 | 2 | 3 |
| 2003 | 1 | 1 |
| 2004 | 3 | 5 |
| 2005 | 1 | 3 |
| 2006 | 7 | 6 |
| 2007 | 0 | 2 |
| 2008 | 6 | 0 |
| 2009 | 2 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 4 | 3 |
| 2015 | 0 | 2 |
| 2016 | 3 | 1 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Differential voltage-mode driver for microwave-assisted magnetic recording14 Jul 2026US 12,682,924 B2Marvell Asia Pte Ltd
- Permanent magnet degausser mechanism for destroying the functionality of data bearing components of magnetic media data bearing devices20 Jun 2023US 11,682,422 B1
- Magnetic disk device and method of setting data format7 Jun 2022US 11,354,042 B2Kabushiki Kaisha Toshiba
- Method of correlating precursor and fragment ions using ion mobility and mass to charge ratio10 Mar 2020US 10,586,691 B2Micromass UK Limited
- Switching period control of microwave assisted magnetic recording for pole erasure suppression7 May 2019US 10,283,159 B2Western Digital Technologies, Inc.
- Secure media scanner9 Apr 2026US 2026/0100197 A1
- Differential Voltage-Mode Driver for Microwave-Assisted Magnetic Recording25 Dec 2025US 2025/0391434 A1Marvell Asia Pte Ltd
- Magnetic disk device and method of setting data format3 Mar 2022US 2022/0066649 A1Kabushiki Kaisha Toshiba
- Switching period control of microwave assisted magnetic recording for pole erasure suppression11 Oct 2018US 2018/0294010 A1Western Digital Technologies, Inc.
- Switching period control of microwave assisted magnetic recording for pole erasure suppression1 Mar 2018US 2018/0061450 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Simultaneous amplification of multiple targets174US 5,422,252 ABecton, Dickinson and Company · 1995
- Demagnetizing a head in a disk drive by increasing the frequency of an AC write signal while maintaining the write current amplitude140US 7,092,186 B1Western Digital Technologies, Inc. · 2006
- Simultaneous amplification of multiple targets104US 5,624,825 ABecton, Dickinson and Company · 1997
- Magnetically stable shields for MR head60US 5,515,221 AInternational Business Machines Corporation · 1996
- Device comprising a first and a second ferromagnetic layer separated by a non-magnetic spacer layer57US 6,252,796 B1U. S. Philips Corporation · 2001