- 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: 2359
10-year publication summary
|
270
|
210
|
241
|
207
|
218
|
202
|
213
|
219
|
184
|
131
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Interactive Entertainment LLC | 2090 |
94 |
| LG Electronics Inc. | 73714 |
88 |
| Samsung Electronics Co., Ltd. | 148077 |
85 |
| Adeia Guides Inc. | 3425 |
84 |
| Sony Interactive Entertainment Inc. | 5976 |
57 |
| AT&T Intellectual Property I, L.P. | 9613 |
54 |
| Turner Broadcasting System, Inc. | 285 |
52 |
| Multimedia Technologies Pte, Ltd | 60 |
49 |
| Winview IP Holdings, LLC | 106 |
46 |
| Enseo, LLC | 264 |
44 |
| Amazon Technologies, Inc. | 27060 |
43 |
| Microsoft Technology Licensing, LLC | 54029 |
43 |
| Google LLC | 42752 |
39 |
| Tencent Technology (Shenzhen) Company Limited | 14989 |
39 |
| Comcast Cable Communications, LLC | 4806 |
35 |
| DISH Network L.L.C. | 898 |
35 |
| META Platforms, Inc. | 7055 |
27 |
| Saturn Licensing LLC | 1438 |
26 |
| Sony Corporation | 30901 |
25 |
| AiBUY Holdco, Inc. | 56 |
25 |
| Other owners | 1369 |