- 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: 2186
10-year publication summary
|
307
|
274
|
212
|
244
|
208
|
222
|
203
|
213
|
209
|
57
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Interactive Entertainment LLC | 1946 |
110 |
| LG Electronics Inc. | 69257 |
86 |
| Rovi Guides, Inc. | 3236 |
73 |
| Samsung Electronics Co., Ltd. | 131630 |
69 |
| AT&T Intellectual Property I, L.P. | 9886 |
62 |
| Sony Interactive Entertainment Inc. | 5162 |
50 |
| Turner Broadcasting System, Inc. | 276 |
49 |
| Multimedia Technologies Pte, Ltd | 60 |
49 |
| Winview IP Holdings, LLC | 119 |
46 |
| Enseo, LLC | 279 |
43 |
| Microsoft Technology Licensing, LLC | 51439 |
42 |
| Amazon Technologies, Inc. | 24422 |
40 |
| Tencent Technology (Shenzhen) Company Limited | 12951 |
36 |
| Google LLC | 38759 |
30 |
| Comcast Cable Communications, LLC | 4075 |
29 |
| Sony Corporation | 32931 |
28 |
| META Platforms, Inc. | 7514 |
28 |
| Saturn Licensing LLC | 1502 |
26 |
| DISH Network L.L.C. | 746 |
23 |
| DISH Technologies L.L.C. | 1666 |
23 |
| Other owners | 1244 |