- 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: 1330
10-year publication summary
|
128
|
126
|
118
|
152
|
117
|
106
|
81
|
69
|
64
|
42
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Nielsen Company (US), LLC | 2694 |
199 |
| Roku, Inc. | 1611 |
73 |
| Google LLC | 44565 |
50 |
| LG Electronics Inc. | 75845 |
44 |
| Nagravision S.A. | 529 |
44 |
| Multimedia Technologies Pte, Ltd | 61 |
44 |
| Digimarc Corporation | 712 |
35 |
| Turner Broadcasting System, Inc. | 286 |
34 |
| Verance Acquisition Corp. | 37 |
31 |
| Verance Corporation | 49 |
27 |
| Saturn Licensing LLC | 1438 |
21 |
| Sharp Corporation | 10569 |
20 |
| Irdeto B.V. | 309 |
20 |
| Samba TV, Inc. | 67 |
18 |
| Synamedia Limited | 327 |
17 |
| Adeia Guides Inc. | 3932 |
15 |
| Cisco Technology, Inc. | 22521 |
13 |
| Samsung Electronics Co., Ltd. | 158156 |
12 |
| Comcast Cable Communications, LLC | 5193 |
12 |
| Adeia Media Solutions Inc. | 266 |
12 |
| Other owners | 589 |