- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 7/173 - Analogue secrecy systems; Analogue 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: 8511
10-year publication summary
|
521
|
398
|
311
|
275
|
240
|
158
|
115
|
67
|
41
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 31565 |
349 |
| AT&T Intellectual Property I, L.P. | 9330 |
338 |
| Panasonic Corporation | 20327 |
317 |
| Sharp Kabushiki Kaisha | 18871 |
245 |
| LG Electronics Inc. | 70898 |
214 |
| Time Warner Cable Enterprises LLC | 923 |
198 |
| Samsung Electronics Co., Ltd. | 138518 |
189 |
| Huawei Technologies Co., Ltd. | 106498 |
163 |
| NEC Corporation | 34337 |
144 |
| Verizon Patent And Licensing Inc. | 6937 |
143 |
| DISH Technologies L.L.C. | 1664 |
131 |
| Comcast Cable Communications, LLC | 4430 |
127 |
| ARRIS Enterprises LLC | 3441 |
116 |
| Google LLC | 40754 |
104 |
| ZTE Corporation | 41038 |
96 |
| DIRECTV, LLC | 798 |
96 |
| Saturn Licensing LLC | 1476 |
96 |
| Adeia Guides Inc. | 2817 |
94 |
| Microsoft Technology Licensing, LLC | 52891 |
82 |
| Avago Technologies International Sales Pte. Limited | 8950 |
78 |
| Other owners | 5191 |