- 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: 2299
10-year publication summary
|
323
|
259
|
193
|
206
|
176
|
125
|
119
|
81
|
64
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75045 |
208 |
| Sony Corporation | 30388 |
138 |
| Samsung Electronics Co., Ltd. | 154120 |
117 |
| Saturn Licensing LLC | 1449 |
101 |
| DISH Technologies L.L.C. | 1604 |
65 |
| Roku, Inc. | 1555 |
56 |
| ARRIS Enterprises LLC | 3438 |
43 |
| Qualcomm Incorporated | 90374 |
40 |
| Sony Group Corporation | 15204 |
36 |
| AT&T Intellectual Property I, L.P. | 9859 |
35 |
| Sony Semiconductor Solutions Corporation | 11253 |
35 |
| The Nielsen Company (US), LLC | 2670 |
34 |
| Adeia Guides Inc. | 3751 |
32 |
| Huawei Technologies Co., Ltd. | 120453 |
24 |
| Comcast Cable Communications, LLC | 5042 |
24 |
| Time Warner Cable Enterprises LLC | 866 |
23 |
| Maxell, Ltd. | 2939 |
23 |
| Adeia Media Holdings LLC | 605 |
22 |
| HyperX Holdings LLC | 141 |
21 |
| Microsoft Technology Licensing, LLC | 54241 |
20 |
| Other owners | 1202 |