G11B 11/105
Using a beam of light or a magnetic field for recording by
Official title: using a beam of light or a magnetic field for recording {by change of magnetisation} and a beam of light for reproducing, {i.e. magneto-optical,} e.g. light-induced thermomagnetic recording, {spin magnetisation recording,} Kerr {or Faraday} effect reproducing
G11B11/105 (Using a beam of light or a magnetic field for recording by) appears on 4,540 US grants and 1,254 published applications in this corpus.
Search patents in G11B- Granted patents
- 4,540
- Published applications
- 1,254
- Assignees
- 451
- Inventors
- 4,368
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 12 | 0 |
| 1985 | 22 | 0 |
| 1986 | 34 | 0 |
| 1987 | 61 | 0 |
| 1988 | 75 | 0 |
| 1989 | 94 | 0 |
| 1990 | 106 | 0 |
| 1991 | 133 | 0 |
| 1992 | 164 | 0 |
| 1993 | 186 | 0 |
| 1994 | 194 | 0 |
| 1995 | 228 | 0 |
| 1996 | 313 | 0 |
| 1997 | 336 | 0 |
| 1998 | 354 | 0 |
| 1999 | 277 | 0 |
| 2000 | 248 | 0 |
| 2001 | 263 | 114 |
| 2002 | 238 | 230 |
| 2003 | 225 | 173 |
| 2004 | 187 | 166 |
| 2005 | 111 | 193 |
| 2006 | 151 | 86 |
| 2007 | 115 | 66 |
| 2008 | 71 | 43 |
| 2009 | 47 | 39 |
| 2010 | 46 | 35 |
| 2011 | 36 | 10 |
| 2012 | 23 | 11 |
| 2013 | 10 | 5 |
| 2014 | 6 | 10 |
| 2015 | 25 | 16 |
| 2016 | 21 | 17 |
| 2017 | 31 | 5 |
| 2018 | 25 | 6 |
| 2019 | 6 | 3 |
| 2020 | 11 | 6 |
| 2021 | 9 | 8 |
| 2022 | 10 | 4 |
| 2023 | 8 | 4 |
| 2024 | 4 | 3 |
| 2025 | 4 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- G11B 11/1055Disposition or mounting of transducers relative to record carriers1,670
- G11B 11/10582Record carriers characterised by the selection of the material or by the1,575
- G11B 11/10502Characterised by the transducing operation to be executed1,488
- G11B 11/10532Heads1,289
- G11B 11/10595Control of operating function1,223
Recent patents
- Magnetic media11 Nov 2025US 12,469,519 B2Imperial College Innovations Limited
- Optical magnetic recording system, writer, media, and method30 Sep 2025US 12,431,165 B1Seagate Technology LLC
- Methods of recording and reproducing holograms13 May 2025US 12,298,717 B2Politechnika Warszawska
- Method for speed-up of magnetic signal readout from magnetic storage media by beam splitting4 Feb 2025US 12,217,774 B2Paul Scherrer Institut
- Laser feedback suppressor for heat-assisted magnetic recording1 Oct 2024US 12,106,771 B2Seagate Technology LLC
- Magnetic media23 Jan 2025US 2025/0029633 A1Imperial College Innovations Limited
- Heat-assisted magnetic recording (hamr) head with main pole having narrow pole tip with plasmonic layer16 May 2024US 2024/0161777 A1Western Digital Technologies, Inc.
- Method for speed-up of magnetic signal readout from magnetic storage media by beam splitting28 Mar 2024US 2024/0105215 A1Paul Scherrer Institut
- Laser feedback suppressor for heat-assisted magnetic recording11 Jan 2024US 2024/0013806 A1Seagate Technology LLC
- Phase locking multiple clocks of different frequencies29 Jun 2023US 2023/0206951 A1Seagate Technology LLC
Most cited
By later US patents
- Disc reproducing apparatus275US 5,740,143 ASony Corporation · 1998
- Signal reproducing apparatus for optical recording and reproducing equipment with compensation of crosstalk from nearby tracks and method for the same210US 5,181,161 ANEC Corporation · 1993
- High numerical aperture optical focusing device having a conical incident facet and a parabolic reflector for use in data storage systems185US 6,377,535 B1Read-Rite Corporation · 2002
- Magneto-optical data storage system having an optical-processing flying head180US 6,081,499 ASeagate Technology LLC · 2000
- Near-field optical transducers for thermal assisted magnetic and optical data storage180US 7,330,404 B2Seagate Technology LLC · 2008