- 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 MPEG packets from an IP network
Patent holdings for IPC class H04N 21/438
Total number of patents in this class: 2257
10-year publication summary
|
350
|
359
|
323
|
258
|
193
|
206
|
175
|
121
|
114
|
20
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 69257 |
210 |
| Sony Corporation | 32931 |
144 |
| Samsung Electronics Co., Ltd. | 131630 |
120 |
| Saturn Licensing LLC | 1502 |
97 |
| Roku, Inc. | 1151 |
64 |
| DISH Technologies L.L.C. | 1666 |
64 |
| Qualcomm Incorporated | 76576 |
43 |
| ARRIS Enterprises LLC | 3432 |
41 |
| AT&T Intellectual Property I, L.P. | 9886 |
40 |
| Sony Semiconductor Solutions Corporation | 8770 |
34 |
| The Nielsen Company (US), LLC | 2549 |
30 |
| Sony Group Corporation | 10730 |
28 |
| Rovi Guides, Inc. | 3236 |
27 |
| Huawei Technologies Co., Ltd. | 100781 |
25 |
| Avago Technologies International Sales Pte. Limited | 9260 |
25 |
| Time Warner Cable Enterprises LLC | 945 |
23 |
| Ericsson | 20417 |
20 |
| Comcast Cable Communications, LLC | 4075 |
20 |
| Spotify AB | 880 |
20 |
| Coherent Logix, Incorporated | 179 |
19 |
| Other owners | 1163 |