- 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: 1875
10-year publication summary
|
239
|
203
|
200
|
172
|
168
|
145
|
103
|
115
|
93
|
36
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Comcast Cable Communications, LLC | 5091 |
98 |
| Adeia Guides Inc. | 3823 |
75 |
| DISH Technologies L.L.C. | 1603 |
49 |
| AT&T Intellectual Property I, L.P. | 9905 |
46 |
| Google LLC | 44062 |
43 |
| Amazon Technologies, Inc. | 27873 |
41 |
| Samsung Electronics Co., Ltd. | 155224 |
30 |
| Microsoft Technology Licensing, LLC | 54289 |
30 |
| ARRIS Enterprises LLC | 3421 |
28 |
| Roku, Inc. | 1581 |
27 |
| Time Warner Cable Enterprises LLC | 858 |
27 |
| Adeia Media Holdings LLC | 602 |
26 |
| Netflix, Inc. | 1289 |
25 |
| ZTE Corporation | 43749 |
20 |
| Multimedia Technologies Pte, Ltd | 60 |
20 |
| Verizon Patent And Licensing Inc. | 7523 |
18 |
| Qualcomm Incorporated | 90870 |
17 |
| Sony Corporation | 30327 |
16 |
| Ericsson | 22374 |
16 |
| Cisco Technology, Inc. | 22386 |
16 |
| Other owners | 1207 |