- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/222 - Secondary servers, e.g. proxy server or cable television Head-end
Patent holdings for IPC class H04N 21/222
Total number of patents in this class: 942
10-year publication summary
|
118
|
106
|
100
|
90
|
74
|
81
|
49
|
48
|
35
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Comcast Cable Communications, LLC | 5169 |
44 |
| AT&T Intellectual Property I, L.P. | 9993 |
36 |
| ARRIS Enterprises LLC | 3413 |
35 |
| Time Warner Cable Enterprises LLC | 853 |
31 |
| Roku, Inc. | 1601 |
21 |
| Samsung Electronics Co., Ltd. | 157557 |
20 |
| Adeia Media Holdings Inc. | 854 |
19 |
| LG Electronics Inc. | 75654 |
18 |
| DIRECTV, LLC | 786 |
18 |
| Google LLC | 44482 |
17 |
| Cisco Technology, Inc. | 22491 |
13 |
| Huawei Technologies Co., Ltd. | 123282 |
13 |
| Verizon Patent And Licensing Inc. | 7555 |
12 |
| DISH Technologies L.L.C. | 1602 |
11 |
| Charter Communications Operating, LLC | 1586 |
10 |
| Wevideo, Inc. | 16 |
10 |
| DISH Network L.L.C. | 949 |
9 |
| Nagravision S.A. | 530 |
9 |
| Netflix, Inc. | 1335 |
9 |
| Grass Valley Canada | 197 |
8 |
| Other owners | 579 |