- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/274 - Storing end-user specific content or additional data in response to end-user request
Patent holdings for IPC class H04N 21/274
Total number of patents in this class: 234
10-year publication summary
|
28
|
34
|
36
|
32
|
24
|
20
|
25
|
26
|
16
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Comcast Cable Communications, LLC | 4075 |
15 |
| Rovi Guides, Inc. | 3236 |
14 |
| Samsung Electronics Co., Ltd. | 131630 |
12 |
| Time Warner Cable Enterprises LLC | 945 |
9 |
| Sony Corporation | 32931 |
6 |
| Pure Storage, Inc. | 2435 |
6 |
| Google LLC | 38759 |
5 |
| AT&T Intellectual Property I, L.P. | 9886 |
4 |
| Sony Interactive Entertainment LLC | 1946 |
4 |
| DISH Technologies L.L.C. | 1666 |
4 |
| Yahoo Ad Tech LLC | 569 |
4 |
| Cox Communications, Inc. | 471 |
3 |
| Hangzhou Hikvision Digital Technology Co., Ltd. | 1207 |
3 |
| T-Mobile USA, Inc. | 3668 |
3 |
| TiVo Solutions Inc. | 287 |
3 |
| Adobe Inc. | 6700 |
3 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
3 |
| Setos Family Trust | 5 |
3 |
| Razberi Secure Technologies, LLC | 14 |
3 |
| META Platforms, Inc. | 7514 |
3 |
| Other owners | 124 |