G11B 7/2534
Polycarbonates [pc]
Official title: polycarbonates [PC]
G11B7/2534 (Polycarbonates [pc]) appears on 1,319 US grants and 923 published applications in this corpus.
Search patents in G11B- Granted patents
- 1,319
- Published applications
- 923
- Assignees
- 242
- Inventors
- 2,130
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 6 | 0 |
| 1987 | 16 | 0 |
| 1988 | 28 | 0 |
| 1989 | 18 | 0 |
| 1990 | 29 | 0 |
| 1991 | 31 | 0 |
| 1992 | 34 | 0 |
| 1993 | 48 | 0 |
| 1994 | 39 | 0 |
| 1995 | 48 | 0 |
| 1996 | 38 | 0 |
| 1997 | 48 | 0 |
| 1998 | 51 | 0 |
| 1999 | 68 | 0 |
| 2000 | 57 | 0 |
| 2001 | 86 | 35 |
| 2002 | 79 | 106 |
| 2003 | 96 | 128 |
| 2004 | 84 | 122 |
| 2005 | 74 | 134 |
| 2006 | 71 | 122 |
| 2007 | 45 | 91 |
| 2008 | 57 | 51 |
| 2009 | 31 | 46 |
| 2010 | 36 | 13 |
| 2011 | 22 | 9 |
| 2012 | 21 | 9 |
| 2013 | 15 | 9 |
| 2014 | 28 | 44 |
| 2015 | 7 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Optical recording medium20 May 2025US 12,308,061 B2Sony Group Corporation
- Optical recording medium substrate, optical recording medium, and method of manufacturing optical recording medium substrate8 Oct 2024US 12,112,781 B2Sony Corporation
- Polycarbonate composition to produce optical quality products with high quality and good processability12 Jul 2016US 9,390,744 B2Sabic Global Technologies B.V.
- Information storage medium, reproducing method, and recording method19 May 2015US 9,036,457 B2Kabushiki Kaisha Toshiba
- Information storage medium, reproducing method, and recording method3 Mar 2015US 8,971,165 B2Kabushiki Kaisha Toshiba
- Optical recording medium10 Oct 2024US 2024/0339129 A1Sony Group Corporation
- Optical disc and method for manufacturing same25 Jun 2020US 2020/0202895 A1CMC Magnetics Corporation
- Optical recording medium substrate, optical recording medium, and method of manufacturing optical recording medium substrate13 Feb 2020US 2020/0051590 A1Sony Corporation
- Blu-ray disc from recycled disc manufacturing materials and a method of manufacturing the same25 Feb 2016US 2016/0055877 A1Thomson Licensing
- Information storage medium, reproducing method, and recording method25 Dec 2014US 2014/0376354 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Sputtering target, method of producing the target, optical recording medium fabricated by using the sputtering target, and method of fabricating the optical recording medium220US 6,280,684 B1Ricoh Company, Ltd. · 2001
- Optical recording medium having a plurality of discrete phase change data recording points198US 5,591,501 AEnergy Conversion Devices, Inc. · 1997
- Multi-layered recording disk and recording/reproducing system using the same155US 5,608,715 APioneer Electronic Corporation · 1997
- Copy protectable optical media device and methodology therefor139US 5,815,484 AHide & Seek Technologies, Inc. · 1998
- Multiple data surface optical data storage system with transmissive data surfaces96US 5,255,262 AInternational Business Machines Corporation · 1993