- 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: 406
10-year publication summary
|
32
|
50
|
25
|
50
|
30
|
38
|
33
|
28
|
25
|
11
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Turner Broadcasting System, Inc. | 276 |
28 |
| The Nielsen Company (US), LLC | 2549 |
20 |
| Samba TV, Inc. | 60 |
19 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
11 |
| Sonos, Inc. | 2274 |
9 |
| Comcast Cable Communications, LLC | 4075 |
8 |
| Nagravision S.A. | 626 |
8 |
| Disney Enterprises, Inc. | 6012 |
7 |
| Sony Corporation | 32931 |
7 |
| ARRIS Enterprises LLC | 3432 |
7 |
| Google LLC | 38759 |
7 |
| Samsung Electronics Co., Ltd. | 131630 |
6 |
| Irdeto B.V. | 296 |
6 |
| Nagrastar, LLC | 45 |
6 |
| OLogN Technologies AG | 123 |
6 |
| Roku, Inc. | 1151 |
6 |
| ViaSat, Inc. | 1508 |
6 |
| AT&T Intellectual Property I, L.P. | 9886 |
5 |
| Toshiba Corporation | 12017 |
5 |
| Cisco Technology, Inc. | 18858 |
5 |
| Other owners | 224 |