- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 12/52 - Circuit switching systems, i.e. systems in which the path is physically permanent during the communication using time division techniques
Patent holdings for IPC class H04L 12/52
Total number of patents in this class: 39
10-year publication summary
|
7
|
1
|
1
|
2
|
5
|
1
|
2
|
3
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 100781 |
5 |
| SELEX ES S.p.A. | 42 |
3 |
| West Technology Group, LLC | 414 |
3 |
| Cisco Technology, Inc. | 18858 |
2 |
| Optis Cellular Technology, LLC | 85 |
2 |
| Snap One, LLC | 193 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| LG Electronics Inc. | 69257 |
1 |
| Sony Corporation | 32931 |
1 |
| NEC Corporation | 32703 |
1 |
| Ericsson | 20417 |
1 |
| Electronics and Telecommunications Research Institute | 8830 |
1 |
| Altera Corporation | 2241 |
1 |
| ADC Telecommunications, Inc. | 476 |
1 |
| ADC DSL Systems, Inc. | 18 |
1 |
| Realtek Semiconductor Corp. | 3028 |
1 |
| Acer Incorporated | 1864 |
1 |
| Datang Mobile Communications Equipment Co., Ltd | 3210 |
1 |
| Extreme Networks, Inc. | 783 |
1 |
| FANUC Corporation | 5803 |
1 |
| Other owners | 8 |