H04N 21/222
Secondary servers
Official title: Secondary servers, e.g. proxy server, cable television Head-end {(provisioning of proxy services in data packet switching networks H04L67/56)}
H04N21/222 (Secondary servers) appears on 2,472 US grants and 3,040 published applications in this corpus.
Search patents in H04N- Granted patents
- 2,472
- Published applications
- 3,040
- Assignees
- 864
- Inventors
- 4,369
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 7 | 0 |
| 1998 | 13 | 0 |
| 1999 | 15 | 0 |
| 2000 | 22 | 0 |
| 2001 | 25 | 26 |
| 2002 | 25 | 122 |
| 2003 | 23 | 83 |
| 2004 | 21 | 98 |
| 2005 | 17 | 85 |
| 2006 | 36 | 82 |
| 2007 | 41 | 140 |
| 2008 | 46 | 179 |
| 2009 | 70 | 143 |
| 2010 | 84 | 122 |
| 2011 | 104 | 122 |
| 2012 | 92 | 124 |
| 2013 | 115 | 156 |
| 2014 | 199 | 225 |
| 2015 | 176 | 186 |
| 2016 | 183 | 173 |
| 2017 | 171 | 160 |
| 2018 | 143 | 124 |
| 2019 | 142 | 109 |
| 2020 | 136 | 128 |
| 2021 | 120 | 119 |
| 2022 | 129 | 118 |
| 2023 | 110 | 78 |
| 2024 | 89 | 71 |
| 2025 | 60 | 40 |
| 2026 | 32 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for delivering an audio and/or video content and transcoding proxy implementing said method22 Sep 2026US 12,744,949 B2Broadpeak
- Streaming proxy service8 Sep 2026US 12,732,643 B2Oxylabs, UAB
- Video streaming control based on network conditions8 Sep 2026US 12,732,644 B2Tencent Technology (Shenzhen) Company Limited
- Methods, systems, and media for presenting supplemental information corresponding to on-demand media content8 Sep 2026US 12,732,667 B2Google Inc.
- Methods and systems for verification of asset availability8 Sep 2026US 12,732,670 B2Comcast Cable Communications, LLC
- Techniques for traffic surge protection of live origin server1 Oct 2026US 2026/0303887 A1Netflix, Inc.
- De-Sequencing Encoded Data Slices via a Storage Network24 Sep 2026US 2026/0288583 A1Everpure, Inc.
- Vehicles including split-bus architectures3 Sep 2026US 2026/0259945 A1AutoConnect Holdings LLC
- Systems and/or methods for distributing advertisements from a central advertisement network to a peripheral device via a local advertisement server20 Aug 2026US 2026/0245116 A1TouchTunes Music Corporation
- Method for delivering an audio and/or video content and transcoding proxy implementing said method16 Jul 2026US 2026/0205639 A1Broadpeak
Most cited
By later US patents
- System for generation of user profiles for a system for customized electronic identification of desirable objects2,365US 5,754,939 A1998
- System for customized electronic identification of desirable objects1,946US 6,029,195 A2000
- System and method for scheduling broadcast of and access to video programs and other data using customer profiles1,609US 5,758,257 A1998
- System for generation of object profiles for a system for customized electronic identification of desirable objects1,475US 5,835,087 A1998
- System and method for delivery of video data over a computer network1,423US 5,956,716 AIntervu, Inc. · 1999