- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/4185 - External card to be used in combination with the client device, e.g. for conditional access for payment
Patent holdings for IPC class H04N 21/4185
Total number of patents in this class: 29
10-year publication summary
|
4
|
4
|
4
|
1
|
1
|
1
|
2
|
0
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nagravision S.A. | 575 |
7 |
| Google LLC | 43237 |
5 |
| Sony Corporation | 30735 |
2 |
| Roku, Inc. | 1480 |
2 |
| Samsung Electronics Co., Ltd. | 149838 |
1 |
| LG Electronics Inc. | 73967 |
1 |
| Thales Avionics, Inc. | 171 |
1 |
| The DIRECTV Group, Inc. | 133 |
1 |
| DIRECTV, LLC | 741 |
1 |
| HSNi, LLC | 46 |
1 |
| Tata Consultancy Services Limited | 2428 |
1 |
| DISH Technologies L.L.C. | 1607 |
1 |
| Shenzhen Zhishengda Technology Co., Ltd. | 80 |
1 |
| Applr Co., Ltd. | 1 |
1 |
| Ttlabc Co., Ltd. | 1 |
1 |
| Hotmart B.V. | 1 |
1 |
| Adeia Media Holdings LLC | 606 |
1 |
| Other owners | 0 |