- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/438 - Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
Patent holdings for IPC class H04N 21/438
Total number of patents in this class: 2292
10-year publication summary
|
359
|
323
|
259
|
193
|
206
|
176
|
125
|
118
|
80
|
47
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 72962 |
211 |
| Sony Corporation | 31065 |
138 |
| Samsung Electronics Co., Ltd. | 145864 |
123 |
| Saturn Licensing LLC | 1443 |
98 |
| DISH Technologies L.L.C. | 1606 |
65 |
| Roku, Inc. | 1399 |
56 |
| ARRIS Enterprises LLC | 3443 |
43 |
| Qualcomm Incorporated | 85183 |
41 |
| AT&T Intellectual Property I, L.P. | 9510 |
35 |
| Sony Semiconductor Solutions Corporation | 10430 |
35 |
| The Nielsen Company (US), LLC | 2647 |
34 |
| Sony Group Corporation | 13785 |
34 |
| Adeia Guides Inc. | 3251 |
26 |
| Huawei Technologies Co., Ltd. | 112316 |
24 |
| Comcast Cable Communications, LLC | 4704 |
23 |
| Time Warner Cable Enterprises LLC | 897 |
23 |
| Maxell, Ltd. | 2791 |
22 |
| Adeia Media Holdings LLC | 604 |
22 |
| Coherent Logix, Incorporated | 182 |
20 |
| Spotify AB | 946 |
20 |
| Other owners | 1199 |