- All sections
- H - Electricity
- H04B - Transmission
- H04B 3/38 - Repeater circuits for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
Patent holdings for IPC class H04B 3/38
Total number of patents in this class: 43
10-year publication summary
|
4
|
4
|
4
|
17
|
5
|
4
|
4
|
2
|
3
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AT&T Intellectual Property I, L.P. | 9510 |
12 |
| PPC Broadband, Inc. | 1076 |
8 |
| Qualcomm Incorporated | 85183 |
4 |
| British Telecommunications Public Limited Company | 2621 |
2 |
| ARRIS Enterprises LLC | 3443 |
2 |
| Samsung Electronics Co., Ltd. | 145864 |
1 |
| Sony Corporation | 31065 |
1 |
| Canon Inc. | 39818 |
1 |
| Intel Corporation | 46962 |
1 |
| Cisco Technology, Inc. | 19900 |
1 |
| Raytheon Company | 8393 |
1 |
| Juniper Networks, Inc. | 3734 |
1 |
| Nippon Telegraph and Telephone Corporation | 17337 |
1 |
| CommScope Technologies LLC | 3240 |
1 |
| Hangzhou H3C Technologies Co., Ltd. | 380 |
1 |
| Ohio University | 365 |
1 |
| Sagemcom Energy & Telecom SAS | 255 |
1 |
| Synaptics Incorporated | 1795 |
1 |
| WIPAM, Inc. | 14 |
1 |
| Digicomm International LLC | 38 |
1 |
| Other owners | 0 |