- 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: 7979
10-year publication summary
|
520
|
395
|
309
|
262
|
239
|
157
|
120
|
70
|
54
|
29
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 30769 |
338 |
| AT&T Intellectual Property I, L.P. | 9682 |
336 |
| Panasonic Corporation | 19952 |
311 |
| Sharp Kabushiki Kaisha | 18615 |
231 |
| LG Electronics Inc. | 73825 |
210 |
| Time Warner Cable Enterprises LLC | 883 |
188 |
| Samsung Electronics Co., Ltd. | 149198 |
185 |
| Huawei Technologies Co., Ltd. | 116003 |
154 |
| NEC Corporation | 36282 |
140 |
| Verizon Patent And Licensing Inc. | 7377 |
139 |
| Comcast Cable Communications, LLC | 4881 |
122 |
| DISH Technologies L.L.C. | 1607 |
121 |
| ARRIS Enterprises LLC | 3452 |
116 |
| Google LLC | 43134 |
105 |
| ZTE Corporation | 43082 |
95 |
| DIRECTV, LLC | 740 |
94 |
| Saturn Licensing LLC | 1442 |
93 |
| Adeia Guides Inc. | 3506 |
87 |
| Microsoft Technology Licensing, LLC | 54340 |
80 |
| Telefonaktiebolaget LM Ericsson (publ) | 28486 |
77 |
| Other owners | 4757 |