G11B 20/00688
Said measures preventing that a usable copy of recorded data can be
Official title: {said measures preventing that a usable copy of recorded data can be made on another medium}
G11B20/00688 (Said measures preventing that a usable copy of recorded data can be) appears on 149 US grants and 191 published applications in this corpus.
Search patents in G11B- Granted patents
- 149
- Published applications
- 191
- Assignees
- 56
- Inventors
- 243
- Latest grant
- 1 Dec 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 4 |
| 2002 | 6 | 14 |
| 2003 | 2 | 15 |
| 2004 | 8 | 7 |
| 2005 | 6 | 9 |
| 2006 | 14 | 25 |
| 2007 | 11 | 37 |
| 2008 | 13 | 25 |
| 2009 | 12 | 14 |
| 2010 | 7 | 8 |
| 2011 | 13 | 10 |
| 2012 | 11 | 8 |
| 2013 | 7 | 7 |
| 2014 | 6 | 3 |
| 2015 | 9 | 2 |
| 2016 | 1 | 0 |
| 2017 | 2 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- 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.
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus26 Sep 2017US 9,773,522 B2Hitachi Maxell, Ltd.
- Method for generating a secure copy of media data11 Apr 2017US 9,619,629 B2Sony Corporation
- Systems and methods for providing access to resources through enhanced audio signals29 Mar 2016US 9,299,386 B2VeriSign, Inc.
- 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.
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus21 Dec 2017US 2017/0365292 A1Hitachi Maxell, Ltd.
- Digital information recording apparatus, reproducing apparatus and transmitting apparatus26 Nov 2015US 2015/0340059 A1Hitachi Maxell, Ltd.
- Information recording device, information recording medium and information recording method19 Feb 2015US 2015/0049597 A1Sharp Kabushiki Kaisha
Most cited
By later US patents
- Systems and methods using cryptography to protect secure computing environments603US 6,157,721 AIntertrust Technologies Corporation · 2000
- Systems and methods using cryptography to protect secure computing environments383US 6,292,569 B1Intertrust Technologies Corporation · 2001
- Method and apparatus for protection of signal copy353US 4,979,210 AMatsushita Electric Industrial Co., Ltd. · 1990
- Method and apparatus for the protection of signal copy261US 5,073,925 AMatsushita Electric Industrial Co., Ltd. · 1991
- Apparatus and method for preventing unauthorized dubbing of a recorded signal144US 4,775,901 ASony Corporation · 1988