- 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: 438
10-year publication summary
|
50
|
25
|
48
|
29
|
37
|
33
|
28
|
26
|
27
|
20
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Turner Broadcasting System, Inc. | 285 |
31 |
| The Nielsen Company (US), LLC | 2664 |
22 |
| Sonos, Inc. | 2673 |
21 |
| Samba TV, Inc. | 63 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 32095 |
11 |
| Comcast Cable Communications, LLC | 4806 |
9 |
| ARRIS Enterprises LLC | 3472 |
8 |
| Nagravision S.A. | 582 |
8 |
| Samsung Electronics Co., Ltd. | 148077 |
7 |
| Disney Enterprises, Inc. | 6139 |
7 |
| Sony Corporation | 30901 |
7 |
| Google LLC | 42752 |
7 |
| Amazon Technologies, Inc. | 27060 |
6 |
| Irdeto B.V. | 308 |
6 |
| Nagrastar, LLC | 45 |
6 |
| OLogN Technologies AG | 100 |
6 |
| Roku, Inc. | 1444 |
6 |
| Maxell, Ltd. | 2839 |
6 |
| Nagravision SARL | 265 |
6 |
| Toshiba Corporation | 12514 |
5 |
| Other owners | 234 |