- 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: 8997
10-year publication summary
|
619
|
521
|
398
|
311
|
274
|
240
|
153
|
113
|
56
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AT&T Intellectual Property I, L.P. | 9886 |
380 |
| Sony Corporation | 32931 |
361 |
| Panasonic Corporation | 20786 |
319 |
| Sharp Kabushiki Kaisha | 18957 |
251 |
| LG Electronics Inc. | 69257 |
218 |
| Time Warner Cable Enterprises LLC | 945 |
206 |
| Samsung Electronics Co., Ltd. | 131630 |
195 |
| Huawei Technologies Co., Ltd. | 100781 |
168 |
| NEC Corporation | 32703 |
146 |
| Verizon Patent And Licensing Inc. | 6900 |
146 |
| DISH Technologies L.L.C. | 1666 |
131 |
| Comcast Cable Communications, LLC | 4075 |
121 |
| ARRIS Enterprises LLC | 3432 |
118 |
| Google LLC | 38759 |
103 |
| Rovi Guides, Inc. | 3236 |
100 |
| DIRECTV, LLC | 812 |
97 |
| Saturn Licensing LLC | 1502 |
97 |
| ZTE Corporation | 39218 |
96 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
89 |
| Microsoft Technology Licensing, LLC | 51439 |
85 |
| Other owners | 5570 |