- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/8358 - Generation of protective data, e.g. certificates involving watermark
Patent holdings for IPC class H04N 21/8358
Total number of patents in this class: 1276
10-year publication summary
|
128
|
128
|
126
|
118
|
152
|
117
|
106
|
79
|
68
|
44
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Nielsen Company (US), LLC | 2641 |
192 |
| Roku, Inc. | 1405 |
72 |
| Verance Corporation | 83 |
54 |
| Google LLC | 42261 |
49 |
| Nagravision S.A. | 585 |
46 |
| LG Electronics Inc. | 73111 |
44 |
| Multimedia Technologies Pte, Ltd | 60 |
43 |
| Digimarc Corporation | 740 |
35 |
| Turner Broadcasting System, Inc. | 286 |
33 |
| Saturn Licensing LLC | 1442 |
21 |
| Sharp Corporation | 10245 |
20 |
| Irdeto B.V. | 308 |
19 |
| Samba TV, Inc. | 62 |
18 |
| Synamedia Limited | 339 |
16 |
| Cisco Technology, Inc. | 19929 |
13 |
| Adeia Media Solutions Inc. | 273 |
12 |
| Comcast Cable Communications, LLC | 4718 |
11 |
| Synergy Sports Technology, LLC | 20 |
11 |
| Adeia Guides Inc. | 3266 |
11 |
| Samsung Electronics Co., Ltd. | 146346 |
10 |
| Other owners | 546 |