H04N 21/25816
Involving client authentication
Official title: {involving client authentication (restricting access to computer systems by authenticating users using a predetermined code G06F21/33; cryptographic authentication protocols H04L9/32; networks authentication protocols H04L63/08; authentication in wireless network security H04W12/06)}
H04N21/25816 (Involving client authentication) appears on 1,184 US grants and 1,633 published applications in this corpus.
Search patents in H04N- Granted patents
- 1,184
- Published applications
- 1,633
- Assignees
- 471
- Inventors
- 2,238
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 9 |
| 2002 | 3 | 25 |
| 2003 | 8 | 21 |
| 2004 | 4 | 37 |
| 2005 | 7 | 42 |
| 2006 | 10 | 59 |
| 2007 | 10 | 60 |
| 2008 | 18 | 58 |
| 2009 | 23 | 87 |
| 2010 | 22 | 79 |
| 2011 | 42 | 73 |
| 2012 | 49 | 84 |
| 2013 | 69 | 77 |
| 2014 | 109 | 167 |
| 2015 | 118 | 120 |
| 2016 | 94 | 112 |
| 2017 | 91 | 96 |
| 2018 | 99 | 58 |
| 2019 | 62 | 61 |
| 2020 | 63 | 64 |
| 2021 | 59 | 47 |
| 2022 | 49 | 51 |
| 2023 | 47 | 44 |
| 2024 | 55 | 38 |
| 2025 | 39 | 42 |
| 2026 | 17 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Lean private copy of media content within network-based digital video recordings20 Aug 2026US 2026/0246998 A1Adeia Media Holdings LLC
Most cited
By later US patents
- Establishing and interacting with on-line media collections using identifiers in media signals443US 6,829,368 B2Digimarc Corporation · 2004
- Method and apparatus for targeting a digital information playback device406US 6,170,060 AAudible, Inc. · 2001
- Systems and methods for secure transaction management and electronic rights protection380US 7,095,854 B1Intertrust Technologies Corporation · 2006
- System for interactively distributing information services367US 6,166,730 ADIVA Systems Corporation · 2000
- Monitoring and reporting system for remote terminals309US 4,893,248 AAccess Co., Ltd. · 1990