G11B 5/4984
Structure of specially adapted switching heads
Official title: {Structure of specially adapted switching heads (G11B5/3958 takes precedence)}
G11B5/4984 (Structure of specially adapted switching heads) appears on 27 US grants and 15 published applications in this corpus.
Search patents in G11B- Granted patents
- 27
- Published applications
- 15
- Assignees
- 15
- Inventors
- 47
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1985 | 1 | 0 |
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| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 3 |
| 2003 | 1 | 0 |
| 2004 | 3 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
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| 2012 | 0 | 0 |
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| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 4 | 1 |
| 2017 | 3 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Switch device and hard disk device1 Sep 2026US 12,726,194 B2Rohm Co., Ltd.
- Magnetic disk device13 Oct 2020US 10,803,899 B2Kabushiki Kaisha Toshiba
- Compensating for loss of current through shorted tunneling magnetoresistance sensors9 Jan 2018US 9,865,282 B2International Business Machines Corporation
- Magnetic recording and reproducing device having magnetic head with first and second reproducing element portions and magnetic reproducing method21 Nov 2017US 9,824,703 B2Kabushiki Kaisha Toshiba
- Dual writer head design26 Sep 2017US 9,773,517 B2Seagate Technology LLC
- Switch Device and Hard Disk Device26 Sep 2024US 2024/0322813 A1Rohm Co., Ltd.
- Magnetic disk device17 Sep 2020US 2020/0294544 A1Kabushiki Kaisha Toshiba
- Magnetic recording and reproducing device and magnetic reproducing method24 Aug 2017US 2017/0243604 A1Kabushiki Kaisha Toshiba
- Compensating for loss of current through shorted tunneling magnetoresistance sensors4 May 2017US 2017/0125040 A1International Business Machines Corporation
- Dual writer head design26 May 2016US 2016/0148629 A1Seagate Technology LLC
Most cited
By later US patents
- Techniques for ultrahigh density writing with a probe on erasable magnetic media49US 6,011,664 ACarnegie Mellon University · 2000
- Matrix device with magnetic heads, notably in thin layers28US 5,124,869 AThomson-CSF · 1992
- Composite magnetic head, magnetic disk drive using the head, and control method for the magnetic disk25US 6,765,740 B2Hitachi Global Storage Technologies Japan, Ltd. · 2004
- Composite magnetic head arranged so the reproducing elements do not overlap a pole of a recording element23US 7,271,970 B2Hitachi Global Storage Technologies Japan, Ltd. · 2007
- Dual writer head design13US 9,773,517 B2Seagate Technology LLC · 2017