G11B 5/127
Structure or manufacture of heads
Official title: Structure or manufacture of heads, e.g. inductive
G11B5/127 (Structure or manufacture of heads) appears on 13,441 US grants and 8,652 published applications in this corpus.
Search patents in G11B- Granted patents
- 13,441
- Published applications
- 8,652
- Assignees
- 807
- Inventors
- 9,259
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 41 | 0 |
| 1977 | 39 | 0 |
| 1978 | 38 | 0 |
| 1979 | 42 | 0 |
| 1980 | 48 | 0 |
| 1981 | 55 | 0 |
| 1982 | 47 | 0 |
| 1983 | 70 | 0 |
| 1984 | 51 | 0 |
| 1985 | 52 | 0 |
| 1986 | 70 | 0 |
| 1987 | 139 | 0 |
| 1988 | 114 | 0 |
| 1989 | 159 | 0 |
| 1990 | 139 | 0 |
| 1991 | 137 | 0 |
| 1992 | 142 | 0 |
| 1993 | 141 | 0 |
| 1994 | 134 | 0 |
| 1995 | 154 | 0 |
| 1996 | 203 | 0 |
| 1997 | 248 | 0 |
| 1998 | 373 | 0 |
| 1999 | 383 | 0 |
| 2000 | 363 | 0 |
| 2001 | 405 | 215 |
| 2002 | 456 | 526 |
| 2003 | 511 | 512 |
| 2004 | 568 | 615 |
| 2005 | 402 | 733 |
| 2006 | 608 | 638 |
| 2007 | 513 | 531 |
| 2008 | 495 | 622 |
| 2009 | 436 | 508 |
| 2010 | 444 | 380 |
| 2011 | 508 | 361 |
| 2012 | 598 | 349 |
| 2013 | 583 | 313 |
| 2014 | 516 | 338 |
| 2015 | 574 | 410 |
| 2016 | 450 | 255 |
| 2017 | 339 | 194 |
| 2018 | 282 | 197 |
| 2019 | 264 | 170 |
| 2020 | 264 | 150 |
| 2021 | 218 | 128 |
| 2022 | 178 | 117 |
| 2023 | 144 | 100 |
| 2024 | 128 | 128 |
| 2025 | 112 | 98 |
| 2026 | 63 | 64 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 5/31Using thin films7,587
- G11B 5/33Structure or manufacture of flux-sensitive heads, i.e. for reproduction only6,662
- G11B 5/1278Specially adapted for magnetisations perpendicular to the surface of the record carrier2,188
- G11B 5/187Structure or manufacture of the surface of the head in physical contact2,064
- G11B 5/17Construction or disposition of windings544
- G11B 5/29Structure or manufacture of unitary devices formed of plural heads for more364
- G11B 5/265Structure or manufacture of a head with more than one gap for347
- G11B 5/147With cores being composed of metal sheets, i.e. laminated cores with cores257
Recent patents
- Hard disk drive and write heads having refilled structures at side edges of an assist device6 Oct 2026US 12,755,755 B1Headway Technologies, Inc.
- Write head designs with refill materials on a back edge of an assist device for improved write head reliability and performance6 Oct 2026US 12,755,756 B1Headway Technologies, Inc.
- Servo recording apparatus, servo write head, method of producing a magnetic tape, and magnetic tape6 Oct 2026US 12,755,759 B2Sony Group Corporation
- Writer with patterned hot seed layer15 Sep 2026US 12,738,293 B2Headway Technologies, Inc.
- 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.
- Ferroelectric storage apparatus and method of reading information8 Oct 2026US 2026/0311721 A1Resonac Hard Disk Corporation
- Magnetoresistance effect element1 Oct 2026US 2026/0302032 A1TDK Corporation
- Magnetic head and magnetic recording device24 Sep 2026US 2026/0290385 A1Kabushiki Kaisha Toshiba
- Magnetic sensor and magnetic recording device17 Sep 2026US 2026/0279389 A1Kabushiki Kaisha Toshiba
- Tapered Magnetic Main Pole Structure With Variable Peg Gap For Heat-Assisted Magnetic Recording Technology17 Sep 2026US 2026/0279390 A1Headway Technologies, Inc.
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
- Reactive ion beam etching method and a thin film head fabricated using the method287US 6,238,582 B1Veeco Instruments Inc. · 2001
- Diamond-like carbon films from a hydrocarbon helium plasma262US 5,470,661 AInternational Business Machines Corporation · 1995