G11B 20/00681
Involving measures which prevent a specific kind of data access
Official title: {involving measures which prevent a specific kind of data access}
G11B20/00681 (Involving measures which prevent a specific kind of data access) appears on 404 US grants and 458 published applications in this corpus.
Search patents in G11B- Granted patents
- 404
- Published applications
- 458
- Assignees
- 128
- Inventors
- 602
- Latest grant
- 8 Dec 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 9 | 0 |
| 2000 | 9 | 0 |
| 2001 | 12 | 10 |
| 2002 | 12 | 40 |
| 2003 | 19 | 25 |
| 2004 | 23 | 27 |
| 2005 | 12 | 40 |
| 2006 | 27 | 46 |
| 2007 | 25 | 68 |
| 2008 | 32 | 62 |
| 2009 | 31 | 43 |
| 2010 | 25 | 32 |
| 2011 | 28 | 13 |
| 2012 | 32 | 17 |
| 2013 | 21 | 13 |
| 2014 | 23 | 9 |
| 2015 | 16 | 5 |
| 2016 | 5 | 3 |
| 2017 | 5 | 1 |
| 2018 | 3 | 2 |
| 2019 | 1 | 0 |
| 2020 | 3 | 1 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Methods and systems for capturing and transmitting media8 Dec 2020US 10,861,495 B1
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus1 Dec 2020US 10,854,237 B2Maxell, Ltd.
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus7 Jan 2020US 10,529,372 B2Maxell, Ltd.
- Methods, nodes and communication device for establishing a key related to at least two network instances23 Apr 2019US 10,270,595 B2Telefonaktiebolaget LM Ericsson (publ)
- Tape volume overwrite protection during error recovery24 Jul 2018US 10,031,793 B2International Business Machines Corporation
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus8 Apr 2021US 2021/0104258 A1Maxell, Ltd.
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus2 Apr 2020US 2020/0105300 A1Maxell, Ltd.
- Tape volume overwrite protection during error recovery22 Feb 2018US 2018/0052727 A1International Business Machines Corporation
- Methods, nodes and communication device for establishing a key related to at least two network instances15 Feb 2018US 2018/0048465 A1Telefonaktiebolaget LM Ericsson (publ)
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus21 Dec 2017US 2017/0365292 A1Hitachi Maxell, Ltd.
Most cited
By later US patents
- Digital information library and delivery system with logic for generating files targeted to the playback device846US 5,926,624 AAudible, Inc. · 1999
- Systems and methods using cryptography to protect secure computing environments603US 6,157,721 AIntertrust Technologies Corporation · 2000
- Digital information library and delivery system with logic for generating files targeting a playback device425US 6,560,651 B2Audible, Inc. · 2003
- Systems and methods using cryptography to protect secure computing environments383US 6,292,569 B1Intertrust Technologies Corporation · 2001
- Apparatus for controlling the reception of transmitted programs381US 4,598,288 ACodart, Inc. · 1986