- 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: 1709
10-year publication summary
|
203
|
196
|
239
|
203
|
199
|
172
|
168
|
143
|
98
|
32
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Comcast Cable Communications, LLC | 4075 |
77 |
| Rovi Guides, Inc. | 3236 |
64 |
| AT&T Intellectual Property I, L.P. | 9886 |
52 |
| DISH Technologies L.L.C. | 1666 |
49 |
| Google LLC | 38759 |
48 |
| Amazon Technologies, Inc. | 24422 |
39 |
| Microsoft Technology Licensing, LLC | 51439 |
31 |
| Samsung Electronics Co., Ltd. | 131630 |
26 |
| ARRIS Enterprises LLC | 3432 |
26 |
| Time Warner Cable Enterprises LLC | 945 |
26 |
| Roku, Inc. | 1151 |
21 |
| ZTE Corporation | 39218 |
20 |
| Multimedia Technologies Pte, Ltd | 60 |
20 |
| Verizon Patent And Licensing Inc. | 6900 |
18 |
| Qualcomm Incorporated | 76576 |
17 |
| Sony Corporation | 32931 |
16 |
| Cisco Technology, Inc. | 18858 |
16 |
| Ericsson | 20417 |
15 |
| Huawei Technologies Co., Ltd. | 100781 |
15 |
| Level 3 Communications, LLC | 1428 |
15 |
| Other owners | 1098 |