H04N 21/26613
For generating or managing keys in general
Official title: {for generating or managing keys in general (key distribution for secret or secure communication involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] H04L9/083; network support of key management H04L63/06; key management for network security in communication control or processing H04W12/04)}
H04N21/26613 (For generating or managing keys in general) appears on 715 US grants and 918 published applications in this corpus.
Search patents in H04N- Granted patents
- 715
- Published applications
- 918
- Assignees
- 317
- Inventors
- 1,389
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 5 |
| 2002 | 1 | 21 |
| 2003 | 3 | 25 |
| 2004 | 9 | 35 |
| 2005 | 17 | 36 |
| 2006 | 19 | 58 |
| 2007 | 16 | 72 |
| 2008 | 18 | 45 |
| 2009 | 29 | 58 |
| 2010 | 40 | 46 |
| 2011 | 32 | 39 |
| 2012 | 51 | 74 |
| 2013 | 63 | 46 |
| 2014 | 50 | 59 |
| 2015 | 55 | 32 |
| 2016 | 49 | 43 |
| 2017 | 36 | 28 |
| 2018 | 30 | 35 |
| 2019 | 29 | 23 |
| 2020 | 26 | 16 |
| 2021 | 26 | 23 |
| 2022 | 24 | 21 |
| 2023 | 24 | 22 |
| 2024 | 19 | 18 |
| 2025 | 18 | 17 |
| 2026 | 10 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Interaction method, system and apparatus, and non-volatile computer-readable storage medium25 Aug 2026US 12,720,166 B2Beijing Bytedance Network Technology Co., Ltd.
- Trustworthiness of video data streams11 Aug 2026US 12,706,752 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Real time streaming in collaborative workspace environment4 Aug 2026US 12,701,272 B2Bluescape
- Real-time geo-locked content delivery network tokens16 Jun 2026US 12,659,534 B2Hulu, LLC
- Trustworthiness of a video data stream9 Jun 2026US 12,652,418 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Real-time geo-locked content delivery network tokens17 Sep 2026US 2026/0281480 A1Hulu, LLC
- Concept for trustworthiness check of video data streams27 Aug 2026US 2026/0254998 A1
- Conditional access system based audience measurement13 Aug 2026US 2026/0238851 A1Nagravision Sarl
- Dynamic Transcoding for Enhancing Audio Playback2 Jul 2026US 2026/0189750 A1Sonos, Inc.
- Content protection4 Jun 2026US 2026/0156307 A1Nagravision Sarl
Most cited
By later US patents
- Systems and methods for secure transaction management and electronic rights protection3,563US 5,892,900 AIntertrust Technologies Corporation · 1999
- System for controlling the distribution and use of digital works using digital tickets544US 6,236,971 B1ContentGuard Holdings, Inc. · 2001
- Program guide system with real-time data sources468US 6,536,041 B1United Video Properties, Inc. · 2003
- System for transmitting information provided with means for controlling access to the information transmitted409US 4,323,921 AEtablissement Public de Diffusion dit "Telediffusion de France" · 1982
- Multi-layer encryption system for the broadcast of encrypted information384US 4,531,020 AOak Industries Inc. · 1985