- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/274 - Storing end-user specific content or additional data in response to end-user request
Patent holdings for IPC class H04N 21/274
Total number of patents in this class: 256
10-year publication summary
|
36
|
32
|
24
|
20
|
25
|
27
|
17
|
22
|
8
|
5
|
| 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 |
17 |
| Adeia Guides Inc. | 3915 |
15 |
| Samsung Electronics Co., Ltd. | 157557 |
12 |
| Time Warner Cable Enterprises LLC | 853 |
9 |
| Pure Storage, Inc. | 2895 |
7 |
| Google LLC | 44482 |
6 |
| Sony Interactive Entertainment LLC | 2140 |
5 |
| Sony Corporation | 30208 |
4 |
| AT&T Intellectual Property I, L.P. | 9993 |
4 |
| DISH Technologies L.L.C. | 1602 |
4 |
| Yahoo Ad Tech LLC | 550 |
4 |
| Huawei Technologies Co., Ltd. | 123282 |
3 |
| Comcast Cable Communications Management, LLC | 123 |
3 |
| Cox Communications, Inc. | 478 |
3 |
| Hangzhou Hikvision Digital Technology Co., Ltd. | 1345 |
3 |
| Korea Electronics Technology Institute | 1803 |
3 |
| Sling TV L.L.C. | 75 |
3 |
| T-Mobile USA, Inc. | 4491 |
3 |
| WHP Workflow Solutions, Inc. | 135 |
3 |
| Adobe Inc. | 7517 |
3 |
| Other owners | 142 |