- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/8352 - Generation of protective data, e.g. certificates involving content or source identification data, e.g. UMID [Unique Material Identifier]
Patent holdings for IPC class H04N 21/8352
Total number of patents in this class: 610
10-year publication summary
|
89
|
72
|
53
|
66
|
63
|
50
|
33
|
42
|
28
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Nielsen Company (US), LLC | 2645 |
82 |
| Roku, Inc. | 1273 |
62 |
| Google LLC | 40853 |
23 |
| Turner Broadcasting System, Inc. | 281 |
21 |
| Samba TV, Inc. | 62 |
19 |
| Comcast Cable Communications, LLC | 4449 |
14 |
| LG Electronics Inc. | 71039 |
13 |
| Samsung Electronics Co., Ltd. | 139001 |
10 |
| DivX, LLC | 285 |
10 |
| Adeia Guides Inc. | 2847 |
10 |
| Google Technology Holdings LLC | 2455 |
9 |
| Saturn Licensing LLC | 1474 |
9 |
| Inscape Data, Inc. | 106 |
9 |
| DISH Technologies L.L.C. | 1664 |
9 |
| Verizon Patent And Licensing Inc. | 6947 |
8 |
| Disney Enterprises, Inc. | 6051 |
7 |
| Sony Corporation | 31541 |
7 |
| Sonos, Inc. | 2462 |
7 |
| Tencent Technology (Shenzhen) Company Limited | 14058 |
7 |
| Crossbar Media Group, Inc | 9 |
7 |
| Other owners | 267 |