- 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: 1851
10-year publication summary
|
229
|
200
|
194
|
170
|
159
|
144
|
100
|
112
|
90
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Comcast Cable Communications, LLC | 4894 |
95 |
| Adeia Guides Inc. | 3548 |
74 |
| AT&T Intellectual Property I, L.P. | 9697 |
51 |
| DISH Technologies L.L.C. | 1607 |
49 |
| Google LLC | 43237 |
44 |
| Amazon Technologies, Inc. | 27338 |
41 |
| Samsung Electronics Co., Ltd. | 149838 |
30 |
| Microsoft Technology Licensing, LLC | 54394 |
30 |
| ARRIS Enterprises LLC | 3441 |
27 |
| Time Warner Cable Enterprises LLC | 879 |
27 |
| Adeia Media Holdings LLC | 606 |
26 |
| Roku, Inc. | 1480 |
23 |
| ZTE Corporation | 43178 |
20 |
| Multimedia Technologies Pte, Ltd | 60 |
20 |
| Verizon Patent And Licensing Inc. | 7380 |
18 |
| Qualcomm Incorporated | 88095 |
17 |
| Netflix, Inc. | 1181 |
17 |
| Sony Corporation | 30735 |
16 |
| Ericsson | 22040 |
16 |
| Cisco Technology, Inc. | 22109 |
16 |
| Other owners | 1194 |