G11B 7/257
Of layers having properties involved in recording or reproduction
Official title: of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
G11B7/257 (Of layers having properties involved in recording or reproduction) appears on 1,244 US grants and 926 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,244
- Published applications
- 926
- Assignees
- 240
- Inventors
- 1,981
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 14 | 0 |
| 1984 | 12 | 0 |
| 1985 | 15 | 0 |
| 1986 | 17 | 0 |
| 1987 | 28 | 0 |
| 1988 | 26 | 0 |
| 1989 | 22 | 0 |
| 1990 | 29 | 0 |
| 1991 | 29 | 0 |
| 1992 | 28 | 0 |
| 1993 | 42 | 0 |
| 1994 | 22 | 0 |
| 1995 | 35 | 0 |
| 1996 | 26 | 0 |
| 1997 | 39 | 0 |
| 1998 | 36 | 0 |
| 1999 | 48 | 0 |
| 2000 | 48 | 0 |
| 2001 | 53 | 35 |
| 2002 | 54 | 96 |
| 2003 | 62 | 95 |
| 2004 | 63 | 129 |
| 2005 | 64 | 132 |
| 2006 | 70 | 111 |
| 2007 | 57 | 77 |
| 2008 | 61 | 74 |
| 2009 | 34 | 57 |
| 2010 | 37 | 50 |
| 2011 | 43 | 18 |
| 2012 | 34 | 16 |
| 2013 | 30 | 6 |
| 2014 | 13 | 7 |
| 2015 | 6 | 3 |
| 2016 | 2 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 4 | 4 |
| 2020 | 0 | 2 |
| 2021 | 2 | 5 |
| 2022 | 0 | 0 |
| 2023 | 4 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 3 |
| 2026 | 1 | 0 |
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)
- Light-transmissive data storage sandwich13 May 2025US 12,300,291 B2Wave Domain LLC
- Light-transmissive data storage sandwich3 Sep 2024US 12,080,328 B1Wave Domain LLC
- Sputtering target28 Nov 2023US 11,827,971 B2Dexerials Corporation
- Recording medium, exterior member, and method of recording on recording medium8 Aug 2023US 11,718,118 B2Sony Corporation
- Non-volatile data storage medium and system16 Oct 2025US 2025/0322846 A1Ecole Polytechnique Federale De Lausanne (Epfl)
- Volume hologram laminate, method for producing volume hologram laminate, volume hologram transfer foil, volume hologram label, volume hologram sheet for embedding, card, and hologram sticker-type product15 May 2025US 2025/0155846 A1Dai Nippon Printing Co.Ltd.
- Optical recording medium, method for recording information, and method for reading information13 Feb 2025US 2025/0054516 A1Panasonic Intellectual Property Management Co., Ltd.
- Light-Transmissive Data Storage Sandwich5 Sep 2024US 2024/0296868 A1Wave Domain LLC
- Optical disk, method of manufacturing same, optical information device, and information processing method21 Oct 2021US 2021/0327466 A1Panasonic Intellectual Property Management Co., Ltd.
Most cited
By later US patents
- Grooved optical data storage device including a chalcogenide memory layer258US 4,719,594 AEnergy Conversion Devices, Inc. · 1988
- Optical recording medium having a plurality of discrete phase change data recording points198US 5,591,501 AEnergy Conversion Devices, Inc. · 1997
- Data storage medium incorporating a transition metal for increased switching speed191US 4,710,899 AEnergy Conversion Devices, Inc. · 1987
- Optical recording media having increased erasability172US 6,011,757 A2000
- Phase change memory and phase change recording medium147US 7,126,149 B2Renesas Technology Corp. · 2006