G11B 20/00746
Wherein the usage restriction can be expressed as a specific number
Official title: {wherein the usage restriction can be expressed as a specific number}
G11B20/00746 (Wherein the usage restriction can be expressed as a specific number) appears on 670 US grants and 753 published applications in this corpus.
Search patents in G11B- Granted patents
- 670
- Published applications
- 753
- Assignees
- 158
- Inventors
- 969
- Latest grant
- 14 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 18 | 0 |
| 2000 | 15 | 0 |
| 2001 | 19 | 17 |
| 2002 | 35 | 119 |
| 2003 | 48 | 86 |
| 2004 | 51 | 72 |
| 2005 | 33 | 83 |
| 2006 | 48 | 70 |
| 2007 | 65 | 91 |
| 2008 | 44 | 69 |
| 2009 | 44 | 48 |
| 2010 | 61 | 32 |
| 2011 | 43 | 15 |
| 2012 | 38 | 25 |
| 2013 | 36 | 12 |
| 2014 | 19 | 7 |
| 2015 | 10 | 5 |
| 2016 | 5 | 1 |
| 2017 | 1 | 0 |
| 2018 | 2 | 0 |
| 2019 | 3 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- G11B 20/00753Wherein the usage restriction limits the number of copies that can be525
- G11B 20/00797Wherein the usage restriction limits the number of times a content can85
- G11B 20/00789Wherein the usage restriction limits the number of functional copies, which can31
- G11B 20/00804Wherein the usage restriction limits the number of users or devices that10
- G11B 20/00811Wherein said number is encoded as a cryptographic token or ticket10
- G11B 20/00782Wherein the usage restriction limits the number of times a program can9
Recent patents
- Viewing segments of event media14 Mar 2023US 11,605,030 B1Amazon Technologies, Inc.
- Technologies for provisioning cryptographic keys2 Mar 2021US 10,938,563 B2Intel Corporation
- Viewing segments of event media18 Feb 2020US 10,565,530 B1Amazon Technologies, Inc.
- System and method for controlled copying and moving of content between devices and domains based on conditional encryption of content key depending on usage state12 Nov 2019US RE47,730 E1Nokia Technologies Oy
- System and method for controlled copying and moving of content between devices and domains based on conditional encryption of content key depending on usage state3 Sep 2019US RE47,595 E1Nokia Technologies Oy
- Technologies for provisioning cryptographic keys3 Jan 2019US 2019/0007209 A1Intel Corporation
- Information processing apparatus and associated method of content exchange11 Feb 2016US 2016/0041979 A1Sony Corporation
- Optional data encryption by partition for a partitionable data storage library31 Dec 2015US 2015/0380046 A1Spectra Logic Corporation
- Copy protection using detailed copy control information5 Nov 2015US 2015/0317460 A1Sony Corporation
- Multimedia storage systems and methods1 Oct 2015US 2015/0277771 A1Mo-Dv, Inc.
Most cited
By later US patents
- Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels1,021US 5,943,422 AIntertrust Technologies Corporation · 1999
- System for controlling the distribution and use of composite digital works982US 5,638,443 AXerox Corporation · 1997
- Trusted infrastructure support system, methods and techniques for secure electronic commerce transaction and rights management720US 6,658,568 B1Intertrust Technologies Corporation · 2003
- Systems and methods using cryptography to protect secure computing environments603US 6,157,721 AIntertrust Technologies Corporation · 2000
- Media content protection utilizing public key cryptography501US 6,550,011 B1Hewlett-Packard Development Company, L. P. · 2003