- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/418 - External card to be used in combination with the client device, e.g. for conditional access
Patent holdings for IPC class H04N 21/418
Total number of patents in this class: 522
10-year publication summary
|
64
|
50
|
54
|
38
|
37
|
21
|
20
|
13
|
8
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nagravision S.A. | 591 |
51 |
| DISH Technologies L.L.C. | 1606 |
32 |
| Samsung Electronics Co., Ltd. | 143812 |
22 |
| Sony Corporation | 31157 |
21 |
| LG Electronics Inc. | 72357 |
20 |
| Nagrastar, LLC | 45 |
17 |
| Mimik Technology Canada Inc. | 21 |
14 |
| ARRIS Enterprises LLC | 3428 |
10 |
| Sony Europe Limited | 526 |
10 |
| DIRECTV, LLC | 786 |
9 |
| Roku, Inc. | 1367 |
9 |
| Universal Electronics Inc. | 852 |
9 |
| Irdeto B.V. | 305 |
8 |
| SmarDTV SA | 30 |
8 |
| Time Warner Cable Enterprises LLC | 901 |
7 |
| Comcast Cable Communications, LLC | 4604 |
6 |
| EchoStar Technologies L.L.C. | 245 |
6 |
| Avago Technologies International Sales Pte. Limited | 8838 |
6 |
| Adeia Media Holdings LLC | 598 |
6 |
| Visa U.S.A. Inc. | 593 |
5 |
| Other owners | 246 |