G11B 23/283
Security features
Official title: {Security features, e.g. digital codes}
G11B23/283 (Security features) appears on 315 US grants and 217 published applications in this corpus.
Search patents in G11B- Granted patents
- 315
- Published applications
- 217
- Assignees
- 117
- Inventors
- 489
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 9 | 0 |
| 1997 | 14 | 0 |
| 1998 | 26 | 0 |
| 1999 | 15 | 0 |
| 2000 | 24 | 0 |
| 2001 | 20 | 12 |
| 2002 | 15 | 22 |
| 2003 | 13 | 20 |
| 2004 | 12 | 25 |
| 2005 | 11 | 27 |
| 2006 | 20 | 19 |
| 2007 | 18 | 20 |
| 2008 | 19 | 14 |
| 2009 | 12 | 23 |
| 2010 | 16 | 11 |
| 2011 | 19 | 6 |
| 2012 | 10 | 7 |
| 2013 | 10 | 3 |
| 2014 | 2 | 3 |
| 2015 | 5 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Vinyl record with integrated authenticity11 Feb 2025US 12,223,981 B2Citizen Digital Inc.
- Data storage device with data writer deactivation responsive to security threats11 May 2021US 11,004,467 B2Seagate Technology LLC
- Optical medium reproducing apparatus, optical medium reproducing method, and optical medium3 Jul 2018US 10,014,023 B2Sony Corporation
- Information recording device, information recording medium and information recording method20 Oct 2015US 9,165,595 B2Sharp Kabushiki Kaisha
- System and method for preventing illegal copy22 Sep 2015US 9,142,250 B2LG Innotek Co., Ltd.
- Vinyl record with integrated authenticity5 Jun 2025US 2025/0182789 A1Citizen Digital Inc.
- Vinyl record with integrated authenticity2 Feb 2023US 2023/0032976 A1Citizen Digital Inc.
- Data storage device with read only data surface14 Nov 2019US 2019/0348070 A1Seagate Technology LLC
- Optical medium reproducing apparatus, optical medium reproducing method, and optical medium21 Sep 2017US 2017/0270957 A1Sony Corporation
- Information recording device, information recording medium and information recording method19 Feb 2015US 2015/0049597 A1Sharp Kabushiki Kaisha
Most cited
By later US patents
- Method and apparatus for improved fingerprinting and authenticating various magnetic media361US 5,740,244 AWashington University · 1998
- Method and apparatus for fingerprinting magnetic media206US 5,365,586 AWashington University · 1994
- Method to deter document and intellectual property piracy through individualization172US 5,699,427 AInternational Business Machines Corporation · 1997
- 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
- 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