H04N 21/41
Structure of client
Official title: Structure of client; Structure of client peripherals
H04N21/41 (Structure of client) appears on 31,818 US grants and 41,222 published applications in this corpus.
Search patents in H04N- Granted patents
- 31,818
- Published applications
- 41,222
- Assignees
- 5,226
- Inventors
- 47,188
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 12 | 0 |
| 1990 | 20 | 0 |
| 1991 | 20 | 0 |
| 1992 | 32 | 0 |
| 1993 | 31 | 0 |
| 1994 | 44 | 0 |
| 1995 | 85 | 0 |
| 1996 | 172 | 0 |
| 1997 | 224 | 0 |
| 1998 | 300 | 0 |
| 1999 | 322 | 0 |
| 2000 | 330 | 0 |
| 2001 | 436 | 317 |
| 2002 | 408 | 1217 |
| 2003 | 398 | 1137 |
| 2004 | 449 | 1356 |
| 2005 | 409 | 1664 |
| 2006 | 685 | 1905 |
| 2007 | 632 | 2038 |
| 2008 | 605 | 1949 |
| 2009 | 880 | 1995 |
| 2010 | 1211 | 2030 |
| 2011 | 1212 | 1846 |
| 2012 | 1556 | 1858 |
| 2013 | 1747 | 2148 |
| 2014 | 2240 | 2479 |
| 2015 | 2081 | 2296 |
| 2016 | 1957 | 2072 |
| 2017 | 1865 | 1969 |
| 2018 | 1661 | 1695 |
| 2019 | 1665 | 1491 |
| 2020 | 1639 | 1501 |
| 2021 | 1417 | 1349 |
| 2022 | 1287 | 1354 |
| 2023 | 1212 | 1163 |
| 2024 | 1112 | 1045 |
| 2025 | 963 | 837 |
| 2026 | 478 | 511 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04N 21/422Input-only peripherals , i.e. input devices connected to specially adapted client devices13,430
- H04N 21/414Specialised client platforms10,491
- H04N 21/4104Peripherals receiving signals from specially adapted client devices9,171
- H04N 21/426Internal components of the client8,673
- H04N 21/418External card to be used in combination with the client device1,701
Recent patents
- Television video and/or audio overlay entertainment device and method6 Oct 2026US 12,756,792 B2
- Apparatus, systems, and methods for user presence detection for audience monitoring6 Oct 2026US 12,756,896 B2The Nielsen Company (US), LLC
- Methods and apparatus to assign viewers to media meter data6 Oct 2026US 12,756,899 B2The Nielsen Company (US), LLC
- Trigger activated enhancement of content user experience6 Oct 2026US 12,756,906 B2Roku, Inc.
- Television and system control method29 Sep 2026US 12,750,543 B2LG Electronics Inc.
- System and method of operating household appliances8 Oct 2026US 2026/0312838 A1Haier US Appliance Solutions, Inc.
- System and method to remotely control and test media player devices8 Oct 2026US 2026/0313088 A1
- Display device and method for operating same8 Oct 2026US 2026/0313184 A1LG Electronics Inc.
- Systems and methods for controlling access to media assets using two-factor authentication8 Oct 2026US 2026/0313193 A1Adeia Guides Inc.
- Method and server for providing media content8 Oct 2026US 2026/0313196 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Systems and methods for displaying and recording control interface with television programs, video, advertising information and program scheduling information2,572US 6,177,931 B1Index Systems, Inc. · 2001
- System and method for providing content, management, and interactivity for client devices1,890US 7,130,616 B2Simple Devices · 2006
- System and method for request, delivery and use of multimedia files for audiovisual entertainment in the home environment1,801US 6,778,869 B2Sony Corporation · 2004
- Multi-room entertainment system with in-room media player/dispenser1,755US 6,256,554 B12001
- Programmable remote control device for interacting with a plurality of remotely controlled devices1,549US 5,410,326 A1995