G11B 7/24038
Multiple laminated recording layers
G11B7/24038 (Multiple laminated recording layers) appears on 1,275 US grants and 1,668 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,275
- Published applications
- 1,668
- Assignees
- 234
- Inventors
- 1,618
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 12 | 0 |
| 1996 | 9 | 0 |
| 1997 | 16 | 0 |
| 1998 | 20 | 0 |
| 1999 | 14 | 0 |
| 2000 | 22 | 0 |
| 2001 | 23 | 4 |
| 2002 | 21 | 53 |
| 2003 | 33 | 69 |
| 2004 | 44 | 125 |
| 2005 | 43 | 183 |
| 2006 | 63 | 227 |
| 2007 | 86 | 223 |
| 2008 | 125 | 216 |
| 2009 | 95 | 138 |
| 2010 | 135 | 127 |
| 2011 | 143 | 102 |
| 2012 | 129 | 60 |
| 2013 | 102 | 41 |
| 2014 | 57 | 42 |
| 2015 | 18 | 15 |
| 2016 | 10 | 8 |
| 2017 | 7 | 4 |
| 2018 | 7 | 6 |
| 2019 | 8 | 5 |
| 2020 | 2 | 2 |
| 2021 | 3 | 4 |
| 2022 | 1 | 2 |
| 2023 | 4 | 3 |
| 2024 | 2 | 5 |
| 2025 | 2 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-volatile data storage medium and system25 Aug 2026US 12,718,843 B2Ecole Polytechnique Federale De Lausanne (Epfl)
- Optical recording medium20 May 2025US 12,308,061 B2Sony Group Corporation
- Optical recording medium, manufacturing method thereof, recording material for optical recording medium, and sputtering target for optical recording medium8 Apr 2025US 12,272,393 B2Sony Group Corporation
- Method of producing multilayer optical recording medium and device for producing multilayer optical recording medium15 Oct 2024US 12,119,034 B2Sony Group Corporation
- Optical storage medium, method for preparing optical storage medium, and system13 Aug 2024US 12,062,387 B2Huawei Technologies Co., Ltd.
- Optical recording medium manufacturing method, and transfer apparatus for optical recording medium14 May 2026US 2026/0134884 A1Sony Group Corporation
- Optical information storage medium6 Nov 2025US 2025/0342857 A1
- Non-volatile data storage medium and system16 Oct 2025US 2025/0322846 A1Ecole Polytechnique Federale De Lausanne (Epfl)
- Optical recording medium, method for recording information, and method for reading information13 Feb 2025US 2025/0054516 A1Panasonic Intellectual Property Management Co., Ltd.
- Optical recording medium10 Oct 2024US 2024/0339129 A1Sony Group Corporation
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
- Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system144US 6,938,162 B1Matsushita Electric Industrial Co., Ltd. · 2005