- 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: 536
10-year publication summary
|
87
|
64
|
50
|
54
|
38
|
37
|
20
|
20
|
11
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nagravision S.A. | 626 |
52 |
| DISH Technologies L.L.C. | 1666 |
32 |
| Sony Corporation | 32931 |
24 |
| Samsung Electronics Co., Ltd. | 131630 |
23 |
| LG Electronics Inc. | 69257 |
19 |
| Nagrastar, LLC | 45 |
17 |
| Mimik Technology Canada Inc. | 21 |
14 |
| Sony Europe Limited | 527 |
11 |
| ARRIS Enterprises LLC | 3432 |
10 |
| DIRECTV, LLC | 812 |
9 |
| Universal Electronics Inc. | 687 |
9 |
| Irdeto B.V. | 296 |
8 |
| SmarDTV SA | 34 |
8 |
| Roku, Inc. | 1151 |
7 |
| Time Warner Cable Enterprises LLC | 945 |
7 |
| Comcast Cable Communications, LLC | 4075 |
6 |
| EchoStar Technologies L.L.C. | 248 |
6 |
| Avago Technologies International Sales Pte. Limited | 9260 |
6 |
| International Business Machines Corporation | 60644 |
5 |
| Sony Electronics Inc. | 659 |
5 |
| Other owners | 258 |