G11B 7/2403
Layers
Official title: Layers; Shape, structure or physical properties thereof
G11B7/2403 (Layers) appears on 1,955 US grants and 2,586 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,955
- Published applications
- 2,586
- Assignees
- 397
- Inventors
- 2,803
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 12 | 0 |
| 1995 | 17 | 0 |
| 1996 | 14 | 0 |
| 1997 | 21 | 0 |
| 1998 | 27 | 0 |
| 1999 | 26 | 0 |
| 2000 | 36 | 0 |
| 2001 | 37 | 11 |
| 2002 | 36 | 90 |
| 2003 | 51 | 110 |
| 2004 | 71 | 183 |
| 2005 | 68 | 263 |
| 2006 | 109 | 312 |
| 2007 | 117 | 298 |
| 2008 | 161 | 294 |
| 2009 | 128 | 219 |
| 2010 | 175 | 198 |
| 2011 | 194 | 137 |
| 2012 | 167 | 106 |
| 2013 | 139 | 80 |
| 2014 | 110 | 76 |
| 2015 | 48 | 38 |
| 2016 | 27 | 22 |
| 2017 | 22 | 19 |
| 2018 | 20 | 21 |
| 2019 | 12 | 13 |
| 2020 | 9 | 16 |
| 2021 | 9 | 16 |
| 2022 | 11 | 10 |
| 2023 | 13 | 9 |
| 2024 | 9 | 21 |
| 2025 | 9 | 20 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G11B 7/24035Recording layers1,606
- G11B 7/24056Light transmission layers lying on the light entrance side and being thinner130
- G11B 7/24047Substrates101
- G11B 7/24067Combinations of two or more layers with specific interrelation95
- G11B 7/24065Layers assisting in recording or reproduction below the optical diffraction limit60
- G11B 7/24062Reflective layers41
- G11B 7/24053Protective topcoat layers lying opposite to the light entrance side39
- G11B 7/24033Electrode layers6
Recent patents
- Non-volatile data storage medium and system25 Aug 2026US 12,718,843 B2Ecole Polytechnique Federale De Lausanne (Epfl)
- Method for fabricating nanostructured optical elements17 Feb 2026US 12,555,604 B2University of Southampton
- Hologram recording medium and optical element comprising the same18 Nov 2025US 12,473,382 B2LG Chem.Ltd.
- Storage mediums and methods of making the same30 Sep 2025US 12,431,164 B2Corning Incorporated
- Photopolymer compositions for thermostable photopolymers in the visible spectral range2 Sep 2025US 12,406,696 B2Covestro Deutschland AG
- Photopolymer film, composition for forming photopolymer film, hologram recording medium and optical element16 Jul 2026US 2026/0202793 A1LG Chem.Ltd.
- Optical recording medium manufacturing method, and transfer apparatus for optical recording medium14 May 2026US 2026/0134884 A1Sony Group Corporation
- Security tag29 Jan 2026US 2026/0028465 A1Murata Manufacturing Co., Ltd.
- Photosensitive composition for hologram recording, hologram recording medium, polymer, large capacity memory, optical element, ar light guide plate, and ar glasses22 Jan 2026US 2026/0023321 A1Mitsubishi Chemical Corporation
- Optical information storage medium6 Nov 2025US 2025/0342857 A1
Most cited
By later US patents
- Method of recording or reproducing data on or from high density multi-layer recording medium using variable light intensity218US 7,009,927 B2Samsung Electronics Co., Ltd. · 2006
- Multilayer information disc192US 4,450,553 AU. S. Philips Corporation · 1984
- Mark forming apparatus, method of forming laser mark on optical disk, reproducing apparatus, optical disk and method of producing optical disk167US 5,761,301 AMatsushita Electric Industrial Co., Ltd. · 1998
- Multi-layered recording disk and recording/reproducing system using the same155US 5,608,715 APioneer Electronic Corporation · 1997
- Phase change memory and phase change recording medium147US 7,126,149 B2Renesas Technology Corp. · 2006