G11B 5/3945
Heads comprising more than one sensitive element
Official title: {Heads comprising more than one sensitive element}
G11B5/3945 (Heads comprising more than one sensitive element) appears on 597 US grants and 322 published applications in this corpus.
Search patents in G11B- Granted patents
- 597
- Published applications
- 322
- Assignees
- 100
- Inventors
- 760
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 0 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 14 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 15 | 0 |
| 1998 | 21 | 0 |
| 1999 | 21 | 0 |
| 2000 | 20 | 0 |
| 2001 | 33 | 16 |
| 2002 | 22 | 22 |
| 2003 | 35 | 15 |
| 2004 | 20 | 22 |
| 2005 | 16 | 22 |
| 2006 | 18 | 12 |
| 2007 | 14 | 12 |
| 2008 | 12 | 5 |
| 2009 | 7 | 10 |
| 2010 | 7 | 5 |
| 2011 | 4 | 7 |
| 2012 | 8 | 4 |
| 2013 | 7 | 4 |
| 2014 | 8 | 7 |
| 2015 | 33 | 36 |
| 2016 | 44 | 22 |
| 2017 | 32 | 19 |
| 2018 | 23 | 16 |
| 2019 | 15 | 15 |
| 2020 | 25 | 12 |
| 2021 | 15 | 12 |
| 2022 | 18 | 7 |
| 2023 | 7 | 5 |
| 2024 | 7 | 6 |
| 2025 | 8 | 9 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-localized spin valve multi-free-layer reader hybridized with spin orbit torque layers4 Aug 2026US 12,700,425 B2Western Digital Technologies, Inc.
- Rear soft bias dual free layer sensor with patterned decoupling layer7 Apr 2026US 12,597,437 B2Western Digital Technologies, Inc.
- Tape reader3 Feb 2026US 12,542,156 B2Tape Ark
- DFL TDMR middle shield throat height control for improved stability7 Oct 2025US 12,437,780 B2Western Digital Technologies, Inc.
- Non-localized spin valve multi-free-layer reader hybridized with spin orbit torque layers9 Sep 2025US 12,412,597 B2Tokyo Institute of Technology
- DFL Reader Signal Sidebump Imbalance Reduction28 Aug 2025US 2025/0273236 A1Western Digital Technologies, Inc.
- Pinned Shield with Controllable Exchange Bias Field31 Jul 2025US 2025/0246204 A1Western Digital Technologies, Inc.
- Magnetic Heads Having Low Magnetic Coercivity (HC) And High Saturated Magnetic Flux Density (BS) In Ferromagnetic (FM) Layer(s) Or Shield(s) With Minimized Saturation3 Jul 2025US 2025/0218457 A1Western Digital Technologies, Inc.
- Non-localized Spin Valve Multi-Free-Layer Reader Hybridized with Spin Orbit Torque Layers12 Jun 2025US 2025/0191608 A1Western Digital Technologies, Inc.
- DFL Reader Signal Sidebump Imbalance Reduction5 Jun 2025US 2025/0182782 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Dual pseudo spin valve heads231US 6,731,473 B2Seagate Technology LLC · 2004
- Bottom or dual spin valve having a seed layer that results in an improved antiferromagnetic layer230US 6,222,707 B1Read-Rite Corporation · 2001
- Magnetoresistive sensor and head216US 6,153,062 AAlps Electric Co., Ltd. · 2000
- Disk drive comprising a dual read element and delay circuitry to improve read signal207US 8,139,301 B1Western Digital (Fremont), LLC · 2012
- Current perpendicular-to-the-plane spin valve type magnetoresistive transducer179US 5,668,688 AQuantum Peripherals Colorado, Inc. · 1997