G11B 7/24053
Protective topcoat layers lying opposite to the light entrance side
Official title: Protective topcoat layers lying opposite to the light entrance side, e.g. layers for preventing electrostatic charging
G11B7/24053 (Protective topcoat layers lying opposite to the light entrance side) appears on 39 US grants and 33 published applications in this corpus.
Search patents in G11B- Granted patents
- 39
- Published applications
- 33
- Assignees
- 40
- Inventors
- 124
- Latest grant
- 3 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 6 |
| 2005 | 0 | 1 |
| 2006 | 1 | 3 |
| 2007 | 2 | 2 |
| 2008 | 1 | 4 |
| 2009 | 1 | 0 |
| 2010 | 2 | 2 |
| 2011 | 2 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 2 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Information storage medium having multiple recording layers3 Jan 2023US 11,545,179 B2Panasonic Intellectual Property Management Co., Ltd.
- Drawing method, erasing method, and drawing apparatus16 Aug 2022US 11,413,878 B2Sony Corporation
- Magnetic devices with overcoats4 Sep 2018US 10,068,594 B2Seagate Technology LLC
- Optical disc recording medium suitable for use in stacked manner29 May 2018US 9,984,718 B2Panasonic Intellectual Property Management Co., Ltd.
- Magnetic devices with overcoats17 Jan 2017US 9,548,076 B2Seagate Technology LLC
- Optical storage medium15 Feb 2024US 2024/0055020 A1Case Western Reserve University
- Drawing method, erasing method, and drawing apparatus2 Dec 2021US 2021/0370688 A1Sony Corporation
- Information recording medium and method for producing same3 Jun 2021US 2021/0166728 A1Panasonic Intellectual Property Management Co., Ltd.
- Optical disc and method for manufacturing same25 Jun 2020US 2020/0202895 A1CMC Magnetics Corporation
- Optical disc recording medium suitable for use in stacked manner21 Sep 2017US 2017/0270959 A1Panasonic Intellectual Property Management Co., Ltd.
Most cited
By later US patents
- Optical element having durability enhancing layer34US 5,312,663 AEastman Kodak Company · 1994
- Compact disc protector31US 4,983,437 A1991
- Dual substrate optical recording medium31US 5,197,060 ASeiko Epson Corporation · 1993
- Multiple layer optical record medium with protective layers and method for producing same31US 5,364,735 ASony Corporation · 1994
- Optical recording medium28US 5,053,288 ATeijin Limited · 1991