G11B 5/3133
Including layers not usually being a part of the electromagnetic transducer structure
Official title: {including layers not usually being a part of the electromagnetic transducer structure and providing additional features, e.g. for improving heat radiation, reduction of power dissipation, adaptations for measurement or indication of gap depth or other properties of the structure (G11B5/3106 takes precedence)}
G11B5/3133 (Including layers not usually being a part of the electromagnetic transducer structure) appears on 2,267 US grants and 1,733 published applications in this corpus.
Search patents in G11B- Granted patents
- 2,267
- Published applications
- 1,733
- Assignees
- 139
- Inventors
- 1,996
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 21 | 0 |
| 1999 | 23 | 0 |
| 2000 | 20 | 0 |
| 2001 | 18 | 16 |
| 2002 | 32 | 29 |
| 2003 | 32 | 37 |
| 2004 | 46 | 77 |
| 2005 | 43 | 56 |
| 2006 | 69 | 71 |
| 2007 | 38 | 61 |
| 2008 | 57 | 119 |
| 2009 | 59 | 102 |
| 2010 | 77 | 122 |
| 2011 | 123 | 130 |
| 2012 | 196 | 121 |
| 2013 | 211 | 102 |
| 2014 | 166 | 104 |
| 2015 | 194 | 142 |
| 2016 | 138 | 79 |
| 2017 | 115 | 58 |
| 2018 | 95 | 49 |
| 2019 | 93 | 37 |
| 2020 | 84 | 44 |
| 2021 | 78 | 43 |
| 2022 | 53 | 32 |
| 2023 | 52 | 19 |
| 2024 | 36 | 41 |
| 2025 | 38 | 27 |
| 2026 | 23 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magnetic flux guiding device with spin torque oscillator (STO) film having negative spin polarization layers in assisted writing application8 Sep 2026US 12,731,605 B2Headway Technologies, Inc.
- Perpendicular magnetic recording writer with tunable pole side bridge design11 Aug 2026US 12,706,113 B2Headway Technologies, Inc.
- Near field transducer with template layer for improved reliability11 Aug 2026US 12,706,118 B2Headway Technologies, Inc.
- Vertical cavity surface emitting laser, head gimbal assembly, and fabrication process11 Aug 2026US 12,706,439 B2Western Digital Technologies, Inc.
- Double-mask near-field transducer (NFT) and method thereof4 Aug 2026US 12,700,423 B1Western Digital Technologies, Inc.
- Tapered Magnetic Main Pole Structure With Variable Peg Gap For Heat-Assisted Magnetic Recording Technology17 Sep 2026US 2026/0279390 A1Headway Technologies, Inc.
- Perpendicular Magnetic Recording Head Equipping A Spin Torque Oscillator Element With An Electric Current In Side Gaps9 Jul 2026US 2026/0196242 A1Headway Technologies, Inc.
- Tapered Optical And Magnetic Elements For Improved Writing In Heat-Assisted Magnetic Recording18 Jun 2026US 2026/0171112 A1Headway Technologies, Inc.
- Tapered Magnetic Main Pole Structure With Variable Peg Gap For Heat-Assisted Magnetic Recording Technology18 Jun 2026US 2026/0171113 A1Headway Technologies, Inc.
- Data storage device shaping read thermal sensor bias signal to balance write thermal sensor signal during laser operation11 Jun 2026US 2026/0162674 A1Western Digital Technologies, Inc.
Most cited
By later US patents
- Read/write head with shifted waveguide218US 6,016,290 ARead-Rite Corporation · 2000
- Differential head integrated touchdown sensors for hard disk drives207US 7,800,858 B1Western Digital (Fremont), LLC · 2010
- Head integrated touchdown sensor for hard disk drives204US 7,796,356 B1Western Digital (Fremont), LLC · 2010
- Laser mounting for a thermally assisted GMR head203US 6,404,706 B1Read-Rite Corporation · 2002
- Method and system for providing an energy assisted magnetic recording disk drive having a non-conformal heat spreader194US 8,320,220 B1Western Digital (Fremont), LLC · 2012