H04N 21/2408
Monitoring of the upstream path of the transmission network
Official title: {Monitoring of the upstream path of the transmission network, e.g. client requests (monitoring data switching networks utilization H04L43/0876; scheduling or organising the servicing of application requests H04L67/60)}
H04N21/2408 (Monitoring of the upstream path of the transmission network) appears on 705 US grants and 823 published applications in this corpus.
Search patents in H04N- Granted patents
- 705
- Published applications
- 823
- Assignees
- 302
- Inventors
- 1,248
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 8 |
| 2002 | 3 | 28 |
| 2003 | 3 | 15 |
| 2004 | 7 | 57 |
| 2005 | 9 | 26 |
| 2006 | 19 | 17 |
| 2007 | 20 | 25 |
| 2008 | 12 | 18 |
| 2009 | 9 | 32 |
| 2010 | 20 | 23 |
| 2011 | 31 | 51 |
| 2012 | 19 | 31 |
| 2013 | 29 | 46 |
| 2014 | 47 | 61 |
| 2015 | 64 | 45 |
| 2016 | 40 | 35 |
| 2017 | 41 | 25 |
| 2018 | 38 | 29 |
| 2019 | 34 | 37 |
| 2020 | 44 | 39 |
| 2021 | 38 | 34 |
| 2022 | 46 | 44 |
| 2023 | 40 | 39 |
| 2024 | 30 | 23 |
| 2025 | 28 | 25 |
| 2026 | 12 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Distribution system and server23 Jul 2026US 2026/0214285 A1JVCKENWOOD Corporation
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Most cited
By later US patents
- Headend cherrypicker multiplexer with switched front end571US 7,039,048 B1Terayon Communication Systems, Inc. · 2006
- Asymmetric hybrid access system and method498US 5,586,121 AHybrid Networks, Inc. · 1996
- Usage management system480US 5,778,182 AAT&T Corp. · 1998
- Apparatus and methods for data collection, analysis and validation including error correction in a content delivery network397US 8,484,511 B2Time Warner Cable Enterprises LLC · 2013
- Method and apparatus for installation abstraction in a secure content delivery system363US 6,374,402 B1Into Networks, Inc. · 2002