- 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: 623
10-year publication summary
|
72
|
53
|
66
|
63
|
51
|
33
|
45
|
29
|
20
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Nielsen Company (US), LLC | 2691 |
77 |
| Roku, Inc. | 1601 |
62 |
| Google LLC | 44482 |
24 |
| Turner Broadcasting System, Inc. | 286 |
21 |
| Samba TV, Inc. | 67 |
19 |
| Comcast Cable Communications, LLC | 5169 |
15 |
| LG Electronics Inc. | 75654 |
13 |
| Adeia Guides Inc. | 3915 |
12 |
| DivX, LLC | 301 |
11 |
| Inscape Data, Inc. | 118 |
11 |
| Samsung Electronics Co., Ltd. | 157557 |
10 |
| Google Technology Holdings LLC | 2095 |
9 |
| Saturn Licensing LLC | 1441 |
9 |
| DISH Technologies L.L.C. | 1602 |
9 |
| Verizon Patent And Licensing Inc. | 7555 |
8 |
| Disney Enterprises, Inc. | 6257 |
7 |
| Sony Corporation | 30208 |
7 |
| Gracenote, Inc. | 505 |
7 |
| Sonos, Inc. | 2853 |
7 |
| Tencent Technology (Shenzhen) Company Limited | 15955 |
7 |
| Other owners | 278 |