- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 7/173 - Analogue secrecy systemsAnalogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
Patent holdings for IPC class H04N 7/173
Total number of patents in this class: 8223
10-year publication summary
|
521
|
398
|
311
|
275
|
240
|
158
|
120
|
69
|
50
|
24
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 31052 |
339 |
| AT&T Intellectual Property I, L.P. | 9508 |
338 |
| Panasonic Corporation | 20110 |
311 |
| Sharp Kabushiki Kaisha | 18744 |
238 |
| LG Electronics Inc. | 73021 |
211 |
| Time Warner Cable Enterprises LLC | 897 |
192 |
| Samsung Electronics Co., Ltd. | 146092 |
189 |
| Huawei Technologies Co., Ltd. | 112438 |
158 |
| Verizon Patent And Licensing Inc. | 7098 |
143 |
| NEC Corporation | 35652 |
142 |
| Comcast Cable Communications, LLC | 4712 |
123 |
| DISH Technologies L.L.C. | 1606 |
121 |
| ARRIS Enterprises LLC | 3443 |
117 |
| Google LLC | 42196 |
106 |
| ZTE Corporation | 42423 |
96 |
| Adeia Guides Inc. | 3258 |
95 |
| DIRECTV, LLC | 782 |
94 |
| Saturn Licensing LLC | 1443 |
93 |
| Microsoft Technology Licensing, LLC | 53720 |
80 |
| Telefonaktiebolaget LM Ericsson (publ) | 27928 |
78 |
| Other owners | 4959 |