- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 21/4147 - PVR [Personal Video Recorder]
Patent holdings for IPC class H04N 21/4147
Total number of patents in this class: 1064
10-year publication summary
|
147
|
185
|
190
|
123
|
82
|
88
|
79
|
59
|
30
|
14
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| DISH Technologies L.L.C. | 1666 |
115 |
| Rovi Guides, Inc. | 3236 |
73 |
| TiVo Solutions Inc. | 287 |
70 |
| AT&T Intellectual Property I, L.P. | 9886 |
44 |
| Comcast Cable Communications, LLC | 4075 |
41 |
| DIRECTV, LLC | 812 |
33 |
| LG Electronics Inc. | 69257 |
30 |
| Time Warner Cable Enterprises LLC | 945 |
29 |
| ARRIS Enterprises LLC | 3432 |
25 |
| DISH Network L.L.C. | 746 |
25 |
| Google LLC | 38759 |
22 |
| Verizon Patent And Licensing Inc. | 6900 |
21 |
| Samba TV, Inc. | 60 |
21 |
| Sony Corporation | 32931 |
18 |
| Intel Corporation | 45621 |
18 |
| TiVo Corporation | 462 |
17 |
| Google Technology Holdings LLC | 2658 |
14 |
| Microsoft Technology Licensing, LLC | 51439 |
13 |
| Ericsson AB | 491 |
12 |
| Sling Media L.L.C. | 199 |
12 |
| Other owners | 411 |