- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/278 - Content descriptor database or directory service for end-user access
Patent holdings for IPC class H04N 21/278
Total number of patents in this class: 396
10-year publication summary
|
79
|
58
|
30
|
55
|
30
|
26
|
24
|
19
|
14
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Adeia Guides Inc. | 4027 |
38 |
| Roku, Inc. | 1640 |
18 |
| DISH Technologies L.L.C. | 1600 |
15 |
| META Platforms, Inc. | 6913 |
15 |
| Samba TV, Inc. | 67 |
13 |
| STATS LLC | 380 |
12 |
| Google LLC | 44850 |
11 |
| Samsung Electronics Co., Ltd. | 159298 |
10 |
| Sony Corporation | 30029 |
9 |
| Comcast Cable Communications, LLC | 5249 |
8 |
| Sony Interactive Entertainment Inc. | 6528 |
7 |
| LG Electronics Inc. | 76219 |
6 |
| Amazon Technologies, Inc. | 28299 |
6 |
| Hulu, LLC | 427 |
6 |
| Inscape Data, Inc. | 118 |
6 |
| Bytedance Inc. | 4438 |
5 |
| Rovi Product Corporation | 226 |
5 |
| International Business Machines Corporation | 62847 |
4 |
| AT&T Intellectual Property I, L.P. | 10055 |
4 |
| Panasonic Intellectual Property Management Co., Ltd. | 34568 |
4 |
| Other owners | 194 |