- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/478 - Supplemental services, e.g. displaying phone caller identification or shopping application
Patent holdings for IPC class H04N 21/478
Total number of patents in this class: 2343
10-year publication summary
|
273
|
212
|
244
|
209
|
222
|
204
|
216
|
221
|
185
|
97
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Interactive Entertainment LLC | 2085 |
102 |
| LG Electronics Inc. | 73021 |
88 |
| Samsung Electronics Co., Ltd. | 146092 |
83 |
| Adeia Guides Inc. | 3258 |
82 |
| Sony Interactive Entertainment Inc. | 5868 |
56 |
| AT&T Intellectual Property I, L.P. | 9508 |
54 |
| Turner Broadcasting System, Inc. | 286 |
52 |
| Multimedia Technologies Pte, Ltd | 60 |
49 |
| Winview IP Holdings, LLC | 109 |
46 |
| Enseo, LLC | 265 |
44 |
| Microsoft Technology Licensing, LLC | 53720 |
43 |
| Amazon Technologies, Inc. | 26677 |
42 |
| Tencent Technology (Shenzhen) Company Limited | 14747 |
39 |
| Google LLC | 42196 |
38 |
| Comcast Cable Communications, LLC | 4712 |
35 |
| DISH Network L.L.C. | 876 |
32 |
| META Platforms, Inc. | 7107 |
27 |
| Saturn Licensing LLC | 1443 |
26 |
| Sony Corporation | 31052 |
25 |
| AiBUY Holdco, Inc. | 56 |
25 |
| Other owners | 1355 |