- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/20 - Servers specifically adapted for the distribution of content, e.g. VOD serversOperations thereof
Patent holdings for IPC class H04N 21/20
Total number of patents in this class: 343
10-year publication summary
|
44
|
53
|
31
|
39
|
40
|
30
|
25
|
15
|
11
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Roku, Inc. | 1387 |
41 |
| Comcast Cable Communications, LLC | 4669 |
16 |
| Google LLC | 42004 |
15 |
| LG Electronics Inc. | 72737 |
8 |
| Samsung Electronics Co., Ltd. | 145025 |
6 |
| Avago Technologies International Sales Pte. Limited | 8786 |
6 |
| Verizon Patent And Licensing Inc. | 7075 |
5 |
| Nokia Technologies Oy | 17637 |
5 |
| Entrix Co., Ltd. | 16 |
5 |
| Personalized Media Communications, LLC | 103 |
5 |
| Time Warner Cable Enterprises LLC | 898 |
5 |
| Adeia Guides Inc. | 3230 |
5 |
| Huawei Technologies Co., Ltd. | 111764 |
4 |
| ZTE Corporation | 42146 |
4 |
| ARRIS Enterprises LLC | 3435 |
4 |
| Hughes Network Systems, LLC | 1280 |
4 |
| Vimmi Communications Ltd. | 4 |
4 |
| DISH Network Technologies India Private Limited | 365 |
4 |
| AT&T Intellectual Property I, L.P. | 9494 |
3 |
| Viacom International Inc. | 1529 |
3 |
| Other owners | 191 |