- 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: 1283
10-year publication summary
|
127
|
123
|
124
|
116
|
148
|
115
|
104
|
79
|
68
|
50
|
| 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 | 2657 |
192 |
| Roku, Inc. | 1428 |
72 |
| Verance Corporation | 82 |
54 |
| Google LLC | 42564 |
50 |
| Nagravision S.A. | 582 |
46 |
| LG Electronics Inc. | 73578 |
44 |
| Multimedia Technologies Pte, Ltd | 60 |
43 |
| Digimarc Corporation | 733 |
35 |
| Turner Broadcasting System, Inc. | 285 |
34 |
| Saturn Licensing LLC | 1439 |
21 |
| Sharp Corporation | 10274 |
20 |
| Irdeto B.V. | 310 |
20 |
| Samba TV, Inc. | 63 |
18 |
| Synamedia Limited | 339 |
16 |
| Cisco Technology, Inc. | 21998 |
13 |
| Adeia Guides Inc. | 3365 |
12 |
| Adeia Media Solutions Inc. | 274 |
12 |
| Comcast Cable Communications, LLC | 4763 |
11 |
| Synergy Sports Technology, LLC | 20 |
11 |
| Samsung Electronics Co., Ltd. | 147622 |
10 |
| Other owners | 549 |