- 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: 7459
10-year publication summary
|
398
|
311
|
275
|
240
|
158
|
121
|
73
|
61
|
32
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 30181 |
319 |
| AT&T Intellectual Property I, L.P. | 9995 |
315 |
| Panasonic Corporation | 19019 |
302 |
| Sharp Kabushiki Kaisha | 18523 |
213 |
| LG Electronics Inc. | 75694 |
209 |
| Samsung Electronics Co., Ltd. | 157719 |
182 |
| Time Warner Cable Enterprises LLC | 853 |
176 |
| Verizon Patent And Licensing Inc. | 7560 |
137 |
| Huawei Technologies Co., Ltd. | 123385 |
135 |
| NEC Corporation | 37004 |
131 |
| Comcast Cable Communications, LLC | 5179 |
122 |
| DISH Technologies L.L.C. | 1601 |
121 |
| ARRIS Enterprises LLC | 3414 |
113 |
| Google LLC | 44482 |
100 |
| ZTE Corporation | 44170 |
95 |
| Saturn Licensing LLC | 1440 |
93 |
| DIRECTV, LLC | 785 |
88 |
| Adeia Guides Inc. | 3923 |
76 |
| Microsoft Technology Licensing, LLC | 54466 |
73 |
| Telefonaktiebolaget LM Ericsson (publ) | 28758 |
72 |
| Other owners | 4387 |