- 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
|
2
|
4
|
4
|
4
|
4
|
1
|
1
|
1
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nagravision S.A. | 626 |
7 |
| Google LLC | 38759 |
5 |
| Sony Corporation | 32931 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| LG Electronics Inc. | 69257 |
1 |
| Thales Avionics, Inc. | 165 |
1 |
| Cable Television Laboratories, Inc. | 876 |
1 |
| The DIRECTV Group, Inc. | 170 |
1 |
| DIRECTV, LLC | 812 |
1 |
| HSNi, LLC | 51 |
1 |
| Tata Consultancy Services Limited | 2066 |
1 |
| Winmore, Inc. | 12 |
1 |
| TiVo Corporation | 462 |
1 |
| DISH Technologies L.L.C. | 1666 |
1 |
| Shenzhen Zhishengda Technology Co., Ltd. | 80 |
1 |
| Applr Co., Ltd. | 1 |
1 |
| Ttlabc Co., Ltd. | 1 |
1 |
| Hotmart B.V. | 1 |
1 |
| Other owners | 0 |