- 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: 2300
10-year publication summary
|
323
|
259
|
193
|
206
|
176
|
125
|
119
|
81
|
66
|
29
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75910 |
210 |
| Sony Corporation | 30097 |
137 |
| Samsung Electronics Co., Ltd. | 158605 |
119 |
| Saturn Licensing LLC | 1440 |
101 |
| DISH Technologies L.L.C. | 1600 |
65 |
| Roku, Inc. | 1623 |
57 |
| ARRIS Enterprises LLC | 3400 |
43 |
| Qualcomm Incorporated | 93006 |
40 |
| Sony Group Corporation | 15879 |
38 |
| AT&T Intellectual Property I, L.P. | 10013 |
35 |
| Sony Semiconductor Solutions Corporation | 11764 |
35 |
| The Nielsen Company (US), LLC | 2703 |
34 |
| Adeia Guides Inc. | 3969 |
31 |
| Huawei Technologies Co., Ltd. | 124379 |
25 |
| Comcast Cable Communications, LLC | 5202 |
24 |
| Maxell, Ltd. | 3066 |
24 |
| Time Warner Cable Enterprises LLC | 849 |
22 |
| Adeia Media Holdings Inc. | 969 |
22 |
| HyperX Holdings LLC | 145 |
22 |
| Microsoft Technology Licensing, LLC | 54524 |
20 |
| Other owners | 1196 |