G11B 7/268
Post-production operations
Official title: {Post-production operations, e.g. initialising phase-change recording layers, checking for defects (investigating the presence of flaws or contamination in optical discs G01N21/9506)}
G11B7/268 (Post-production operations) appears on 236 US grants and 248 published applications in this corpus.
Search patents in G11B- Granted patents
- 236
- Published applications
- 248
- Assignees
- 90
- Inventors
- 430
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 8 | 0 |
| 2001 | 13 | 5 |
| 2002 | 13 | 18 |
| 2003 | 8 | 19 |
| 2004 | 8 | 29 |
| 2005 | 14 | 43 |
| 2006 | 27 | 39 |
| 2007 | 20 | 27 |
| 2008 | 23 | 15 |
| 2009 | 27 | 13 |
| 2010 | 14 | 20 |
| 2011 | 20 | 9 |
| 2012 | 16 | 2 |
| 2013 | 8 | 4 |
| 2014 | 2 | 0 |
| 2015 | 3 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for storing and acquiring information using fluorescence defects in wide bandgap materials17 Mar 2026US 12,579,998 B2University of Science and Technology of China
- Optical storage medium, method for preparing optical storage medium, and system13 Aug 2024US 12,062,387 B2Huawei Technologies Co., Ltd.
- Transfer apparatus23 Jun 2020US 10,691,110 B2Sony Corporation
- Information recording and playback device20 Feb 2018US 9,899,051 B2Panasonic Intellectual Property Management Co., Ltd.
- Method and apparatus for imitating a defect in a read-back signal received from a rotating storage medium3 Jan 2017US 9,536,562 B1Marvell International Ltd.
- Method for storing and acquiring information using fluorescence defects in wide bandgap materials15 Jan 2026US 2026/0018188 A1University of Science and Technology of China
- Optical storage medium, method for preparing optical storage medium, and system7 Sep 2023US 2023/0282234 A1Huawei Technologies Co., Ltd.
- Transfer apparatus27 Jul 2017US 2017/0212508 A1Sony Corporation
- Information recording and playback device9 Jun 2016US 2016/0163347 A1Panasonic Intellectual Property Management Co., Ltd.
- Optical disk inspection method and optical disk library device30 Jul 2015US 2015/0213828 A1Hitachi-LG Data Storage, Inc.
Most cited
By later US patents
- Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk108US 6,052,465 AMatsushita Electric Industrial Co., Ltd. · 2000
- Optical information recording medium and optical recording method65US 6,143,468 AMitsubishi Chemical Corporation · 2000
- Surface inspection by amplitude modulated specular light detection46US 7,623,427 B2Seagate Technology LLC · 2009
- Optical information recording medium and optical recording method37US 6,294,310 B1Mitsubishi Chemical Corporation · 2001
- Initialization of phase-change optical recording medium35US 6,445,669 B1Ricoh Company, Ltd. · 2002