G11B 5/265
Structure or manufacture of a head with more than one gap for
Official title: Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track (G11B5/33 takes precedence {in thin film structures G11B5/31})
G11B5/265 (Structure or manufacture of a head with more than one gap for) appears on 347 US grants and 147 published applications in this corpus.
Search patents in G11B- Granted patents
- 347
- Published applications
- 147
- Assignees
- 92
- Inventors
- 526
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 1 | 0 |
| 1981 | 7 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 15 | 0 |
| 1988 | 13 | 0 |
| 1989 | 12 | 0 |
| 1990 | 13 | 0 |
| 1991 | 13 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 5 | 2 |
| 2002 | 6 | 5 |
| 2003 | 7 | 6 |
| 2004 | 10 | 7 |
| 2005 | 7 | 17 |
| 2006 | 8 | 8 |
| 2007 | 6 | 3 |
| 2008 | 5 | 5 |
| 2009 | 6 | 2 |
| 2010 | 4 | 1 |
| 2011 | 2 | 1 |
| 2012 | 2 | 7 |
| 2013 | 3 | 3 |
| 2014 | 8 | 7 |
| 2015 | 14 | 7 |
| 2016 | 12 | 13 |
| 2017 | 11 | 2 |
| 2018 | 10 | 13 |
| 2019 | 12 | 11 |
| 2020 | 17 | 8 |
| 2021 | 8 | 6 |
| 2022 | 7 | 3 |
| 2023 | 8 | 4 |
| 2024 | 3 | 4 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Reduction of high tape contact pressure points against head assembly21 Oct 2025US 12,451,157 B2Western Digital Technologies, Inc.
- Magnetic tape, magnetic tape cartridge, servo pattern recording device, magnetic tape drive, magnetic tape system, detection device, inspection device, servo pattern recording method, manufacturing method of magnetic tape, detection method, and inspection method29 Jul 2025US 12,374,361 B2FUJIFILM Corporation
- Fast partial erasure for drive sanitization29 Oct 2024US 12,131,758 B2Seagate Technology LLC
- Mechanism to shift the head span of a tape head at a wafer level27 Aug 2024US 12,073,858 B2International Business Machines Corporation
- Reduction of high tape contact pressure points against head assembly9 Jul 2024US 12,033,674 B2Western Digital Technologies, Inc.
- Reduction Of High Tape Contact Pressure Points Against Head Assembly12 Feb 2026US 2026/0045273 A1Western Digital Technologies, Inc.
- Dual Free Layer TMR Reader With Shaped Rear Bias and Methods of Forming Thereof9 Jan 2025US 2025/0014594 A1Western Digital Technologies, Inc.
- Reduction of high tape contact pressure points against head assembly26 Sep 2024US 2024/0321295 A1Western Digital Technologies, Inc.
- Magnetic tape, magnetic tape cartridge, servo pattern recording device, magnetic tape drive, magnetic tape system, detection device, inspection device, servo pattern recording method, manufacturing method of magnetic tape, detection method, and inspection method27 Jun 2024US 2024/0212708 A1FUJIFILM Corporation
- Fast partial erasure for drive sanitization14 Mar 2024US 2024/0087598 A1Seagate Technology LLC
Most cited
By later US patents
- Tape head with support bars162US 6,611,398 B1Quantum Corporation · 2003
- Write head for improved manufacturability larger write field and reduced adjacent track erasure151US 7,349,179 B1Western Digital (Fremont), LLC · 2008
- Recording and reproducing apparatus101US 5,473,584 AMatsushita Electric Industrial Co., Ltd. · 1995
- Writer structure with assisted bias65US 7,397,633 B2Seagate Technology LLC · 2008
- Differential/dual CPP recording head56US 7,436,632 B2Seagate Technology LLC · 2008