G11B 5/3987
With provision for closing the magnetic flux during operation
Official title: {with provision for closing the magnetic flux during operation}
G11B5/3987 (With provision for closing the magnetic flux during operation) appears on 13 US grants and 5 published applications in this corpus.
Search patents in G11B- Granted patents
- 13
- Published applications
- 5
- Assignees
- 8
- Inventors
- 32
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 2 | 3 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- DFL TDMR middle shield throat height control for improved stability7 Oct 2025US 12,437,780 B2Western Digital Technologies, Inc.
- Magnetic write head with write-field enhancement structure including a magnetic notch18 May 2021US 11,011,190 B2Western Digital Technologies, Inc.
- Magnetic recording head and magnetic recording and reproducing device comprising the same11 Aug 2020US 10,741,203 B2Kabushiki Kaisha Toshiba
- Magnetic recording head and magnetic recording and reproducing device comprising the same7 Apr 2020US 10,614,839 B2Kabushiki Kaisha Toshiba
- Magnetic scissor sensor with closed-loop side shield13 Jun 2017US 9,679,591 B1HGST Netherlands B. V.
- DFL TDMR Middle Shield Throat Height Control for Improved Stability6 Mar 2025US 2025/0078864 A1Western Digital Technologies, Inc.
- Magnetic write head with write-field enhancement structure including a magnetic notch29 Oct 2020US 2020/0342899 A1Western Digital Technologies, Inc.
- Magnetic recording head and magnetic recording and reproducing device comprising the same9 Jul 2020US 2020/0219533 A1Kabushiki Kaisha Toshiba
- Magnetic recording head and magnetic recording and reproducing device comprising the same2 Jan 2020US 2020/0005816 A1Kabushiki Kaisha Toshiba
- Magnetic scissor sensor with closed-loop side shield1 Jun 2017US 2017/0154641 A1HGST Netherlands B. V.
Most cited
By later US patents
- Magnetoresistive head30US 4,535,375 AMagnetic Peripherals Inc. · 1985
- Magnetoresistive sensor having a closed domain structure and electrode biasing22US 4,503,394 AHitachi, Ltd. · 1985
- Magnetically capped dual magnetoresistive reproduce head15US 5,644,456 AEastman Kodak Company · 1997
- Magnetic head13US 4,922,360 AHitachi, Ltd. · 1990
- Mangeto-resistive type read head12US 4,907,114 AHitachi, Ltd. · 1990