- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/231 - Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers or prioritizing data for deletion
Patent holdings for IPC class H04N 21/231
Total number of patents in this class: 1892
10-year publication summary
|
239
|
203
|
200
|
172
|
168
|
145
|
103
|
116
|
94
|
54
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Comcast Cable Communications, LLC | 5193 |
99 |
| Adeia Guides Inc. | 3932 |
76 |
| DISH Technologies L.L.C. | 1601 |
49 |
| AT&T Intellectual Property I, L.P. | 10006 |
46 |
| Google LLC | 44565 |
44 |
| Amazon Technologies, Inc. | 28142 |
41 |
| Samsung Electronics Co., Ltd. | 158156 |
30 |
| Microsoft Technology Licensing, LLC | 54464 |
30 |
| ARRIS Enterprises LLC | 3404 |
28 |
| Roku, Inc. | 1611 |
28 |
| Time Warner Cable Enterprises LLC | 851 |
27 |
| Netflix, Inc. | 1353 |
26 |
| Adeia Media Holdings Inc. | 918 |
25 |
| Multimedia Technologies Pte, Ltd | 61 |
21 |
| ZTE Corporation | 44219 |
20 |
| Verizon Patent And Licensing Inc. | 7572 |
18 |
| Qualcomm Incorporated | 92563 |
17 |
| Tencent Technology (Shenzhen) Company Limited | 16006 |
17 |
| Sony Corporation | 30139 |
16 |
| Ericsson | 22815 |
16 |
| Other owners | 1218 |