- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/439 - Processing of audio elementary streams
Patent holdings for IPC class H04N 21/439
Total number of patents in this class: 3022
10-year publication summary
|
354
|
303
|
294
|
320
|
310
|
296
|
270
|
228
|
191
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 150129 |
191 |
| The Nielsen Company (US), LLC | 2656 |
173 |
| Sonos, Inc. | 2724 |
129 |
| Google LLC | 43266 |
108 |
| Adeia Guides Inc. | 3560 |
108 |
| Sony Corporation | 30721 |
77 |
| LG Electronics Inc. | 74038 |
66 |
| Roku, Inc. | 1484 |
64 |
| DISH Technologies L.L.C. | 1607 |
49 |
| Comcast Cable Communications, LLC | 4902 |
48 |
| Apple Inc. | 56673 |
47 |
| Multimedia Technologies Pte, Ltd | 60 |
43 |
| DISH Network L.L.C. | 909 |
42 |
| Gracenote, Inc. | 489 |
41 |
| Microsoft Technology Licensing, LLC | 54389 |
37 |
| Spotify AB | 990 |
36 |
| Hisense Visual Technology Co., Ltd. | 926 |
36 |
| AT&T Intellectual Property I, L.P. | 9706 |
34 |
| Tencent Technology (Shenzhen) Company Limited | 15307 |
34 |
| META Platforms, Inc. | 6983 |
33 |
| Other owners | 1626 |