G11B 5/33
Structure or manufacture of flux-sensitive heads, i.e. for reproduction only
Official title: Structure or manufacture of flux-sensitive heads, {i.e. for reproduction only; Combination of such heads with means for recording or erasing only}({Single head using magnetic domains for scanning G11B5/4946; multiple head for scanning G11B5/4907 and subgroups } ; general details therefor G11B5/133 - G11B5/255)
G11B5/33 (Structure or manufacture of flux-sensitive heads, i.e. for reproduction only) appears on 6,662 US grants and 4,469 published applications in this corpus.
Search patents in G11B- Granted patents
- 6,662
- Published applications
- 4,469
- Assignees
- 459
- Inventors
- 4,742
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 13 | 0 |
| 1978 | 12 | 0 |
| 1979 | 12 | 0 |
| 1980 | 12 | 0 |
| 1981 | 11 | 0 |
| 1982 | 12 | 0 |
| 1983 | 16 | 0 |
| 1984 | 16 | 0 |
| 1985 | 14 | 0 |
| 1986 | 19 | 0 |
| 1987 | 31 | 0 |
| 1988 | 17 | 0 |
| 1989 | 34 | 0 |
| 1990 | 27 | 0 |
| 1991 | 19 | 0 |
| 1992 | 33 | 0 |
| 1993 | 46 | 0 |
| 1994 | 46 | 0 |
| 1995 | 71 | 0 |
| 1996 | 105 | 0 |
| 1997 | 141 | 0 |
| 1998 | 219 | 0 |
| 1999 | 253 | 0 |
| 2000 | 272 | 0 |
| 2001 | 305 | 152 |
| 2002 | 341 | 382 |
| 2003 | 365 | 368 |
| 2004 | 411 | 449 |
| 2005 | 283 | 428 |
| 2006 | 416 | 345 |
| 2007 | 326 | 296 |
| 2008 | 281 | 311 |
| 2009 | 229 | 236 |
| 2010 | 229 | 144 |
| 2011 | 218 | 120 |
| 2012 | 210 | 114 |
| 2013 | 170 | 89 |
| 2014 | 168 | 141 |
| 2015 | 238 | 171 |
| 2016 | 184 | 97 |
| 2017 | 116 | 87 |
| 2018 | 110 | 110 |
| 2019 | 116 | 80 |
| 2020 | 116 | 68 |
| 2021 | 112 | 70 |
| 2022 | 84 | 47 |
| 2023 | 55 | 41 |
| 2024 | 53 | 57 |
| 2025 | 40 | 44 |
| 2026 | 22 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Read head with multiple contacts formed underneath the sensor8 Sep 2026US 12,731,606 B2Western Digital Technologies, Inc.
- Magnetic storage device provided with magnetoresistive element1 Sep 2026US 12,725,632 B2National Institute of Advanced Industrial Science and Technology
- Magneto-resistive reader utilizing read shields to maintain reference layer magnetization25 Aug 2026US 12,718,839 B2Headway Technologies, Inc.
- Magnetic sensor, magnetic head and magnetic recording device25 Aug 2026US 12,721,047 B2Kabushiki Kaisha Toshiba
- Non-localized spin valve multi-free-layer reader hybridized with spin orbit torque layers4 Aug 2026US 12,700,425 B2Western Digital Technologies, Inc.
- Magnetoresistance effect element1 Oct 2026US 2026/0302032 A1TDK Corporation
- Spin-accumulation sensors10 Sep 2026US 2026/0266930 A1Regents of the University of Minnesota
- Magnetic tape, magnetic tape cartridge, and magnetic tape apparatus27 Aug 2026US 2026/0253611 A1FUJIFILM Corporation
- Dual Free Layer Reader with Rear Soft Bias Design with Improved Soft Bias Stability20 Aug 2026US 2026/0245582 A1Western Digital Technologies, Inc.
- Magnetic recording head having a sensor stack disposed along a stripe-height direction20 Aug 2026US 2026/0245585 A1Seagate Technology LLC
Most cited
By later US patents
- Electronic device using magnetic components385US 5,695,864 AInternational Business Machines Corporation · 1997
- Magnetoresistive sensor based on the spin valve effect373US 5,206,590 AInternational Business Machines Corporation · 1993
- Magnetic tunnel junctions with controlled magnetic response321US 5,650,958 AInternational Business Machines Corporation · 1997
- Magnetoresistive spin valve sensor with improved pinned ferromagnetic layer and magnetic recording system using the sensor249US 5,465,185 AInternational Business Machines Corporation · 1995
- Magnetic spin injected field effect transistor and method of operation245US 5,654,566 A1997