- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/835 - Generation of protective data, e.g. certificates
Patent holdings for IPC class H04N 21/835
Total number of patents in this class: 436
10-year publication summary
|
50
|
25
|
50
|
30
|
38
|
33
|
28
|
30
|
27
|
17
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Turner Broadcasting System, Inc. | 282 |
31 |
| The Nielsen Company (US), LLC | 2646 |
22 |
| Sonos, Inc. | 2590 |
19 |
| Samba TV, Inc. | 62 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 31273 |
11 |
| Comcast Cable Communications, LLC | 4700 |
9 |
| Nagravision S.A. | 586 |
8 |
| Samsung Electronics Co., Ltd. | 145630 |
7 |
| Disney Enterprises, Inc. | 6090 |
7 |
| Sony Corporation | 31080 |
7 |
| ARRIS Enterprises LLC | 3442 |
7 |
| Google LLC | 42096 |
7 |
| Amazon Technologies, Inc. | 26625 |
6 |
| Irdeto B.V. | 307 |
6 |
| Nagrastar, LLC | 45 |
6 |
| OLogN Technologies AG | 100 |
6 |
| Roku, Inc. | 1397 |
6 |
| Maxell, Ltd. | 2788 |
6 |
| Nagravision SARL | 248 |
6 |
| Toshiba Corporation | 12326 |
5 |
| Other owners | 235 |