- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/441 - Acquiring end-user identification
Patent holdings for IPC class H04N 21/441
Total number of patents in this class: 405
10-year publication summary
|
35
|
45
|
32
|
34
|
29
|
25
|
21
|
23
|
16
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Multimedia Technologies Pte, Ltd | 61 |
21 |
| Adeia Guides Inc. | 3969 |
21 |
| Turner Broadcasting System, Inc. | 288 |
18 |
| LG Electronics Inc. | 75910 |
15 |
| AT&T Intellectual Property I, L.P. | 10013 |
14 |
| Universal Electronics Inc. | 829 |
14 |
| Apple Inc. | 59117 |
12 |
| Samsung Electronics Co., Ltd. | 158605 |
11 |
| Google LLC | 44674 |
10 |
| Maxell, Ltd. | 3066 |
10 |
| Roku, Inc. | 1623 |
8 |
| Hisense Visual Technology Co., Ltd. | 1006 |
8 |
| Sony Corporation | 30097 |
7 |
| Comcast Cable Communications, LLC | 5202 |
7 |
| Genetec Inc. | 346 |
7 |
| The Nielsen Company (US), LLC | 2703 |
7 |
| Sookbox, LLC | 7 |
6 |
| Nagravision S.A. | 529 |
5 |
| Rovi Guides, Inc. | 808 |
5 |
| Maxell Holdings, Ltd. | 1255 |
5 |
| Other owners | 194 |