- 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: 1204
10-year publication summary
|
106
|
129
|
128
|
126
|
118
|
152
|
117
|
105
|
75
|
24
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Nielsen Company (US), LLC | 2549 |
171 |
| Roku, Inc. | 1151 |
67 |
| Verance Corporation | 81 |
50 |
| Google LLC | 38759 |
49 |
| Nagravision S.A. | 626 |
47 |
| LG Electronics Inc. | 69257 |
43 |
| Multimedia Technologies Pte, Ltd | 60 |
43 |
| Digimarc Corporation | 787 |
35 |
| Turner Broadcasting System, Inc. | 276 |
25 |
| Saturn Licensing LLC | 1502 |
21 |
| Sharp Corporation | 10015 |
20 |
| Irdeto B.V. | 296 |
19 |
| Synamedia Limited | 354 |
17 |
| Samba TV, Inc. | 60 |
16 |
| Cisco Technology, Inc. | 18858 |
12 |
| Synergy Sports Technology, LLC | 20 |
11 |
| TiVo Solutions Inc. | 287 |
11 |
| Samsung Electronics Co., Ltd. | 131630 |
10 |
| Disney Enterprises, Inc. | 6012 |
10 |
| Sony Corporation | 32931 |
10 |
| Other owners | 517 |