- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/4367 - Establishing a secure communication between the client and a peripheral device or smart card
Patent holdings for IPC class H04N 21/4367
Total number of patents in this class: 404
10-year publication summary
|
48
|
73
|
46
|
42
|
33
|
26
|
24
|
17
|
19
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Enseo, LLC | 279 |
29 |
| Nagravision S.A. | 626 |
21 |
| Samsung Electronics Co., Ltd. | 131630 |
15 |
| Sony Corporation | 32931 |
15 |
| LG Electronics Inc. | 69257 |
14 |
| TiVo Solutions Inc. | 287 |
13 |
| Maxell, Ltd. | 2533 |
13 |
| Maxell Holdings, Ltd. | 1422 |
11 |
| AT&T Intellectual Property I, L.P. | 9886 |
10 |
| ARRIS Enterprises LLC | 3432 |
10 |
| Universal Electronics Inc. | 687 |
10 |
| Apple Inc. | 50209 |
8 |
| Google LLC | 38759 |
8 |
| Crestron Electronics Inc. | 649 |
7 |
| Toshiba Corporation | 12017 |
6 |
| Intel Corporation | 45621 |
6 |
| Google Technology Holdings LLC | 2658 |
6 |
| Comcast Cable Communications, LLC | 4075 |
6 |
| Digimarc Corporation | 787 |
6 |
| DISH Technologies L.L.C. | 1666 |
6 |
| Other owners | 184 |