- All sections
- H - Electricity
- H04B - Transmission
- H04B 3/50 - Systems for transmission between fixed stations via two-conductor transmission lines
Patent holdings for IPC class H04B 3/50
Total number of patents in this class: 223
10-year publication summary
|
26
|
25
|
23
|
19
|
21
|
10
|
10
|
7
|
5
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AT&T Intellectual Property I, L.P. | 10003 |
17 |
| Sumitomo Electric Industries, Ltd. | 16412 |
8 |
| Sumitomo Wiring Systems, Ltd. | 11084 |
7 |
| AutoNetworks Technologies, Ltd. | 7164 |
7 |
| British Telecommunications Public Limited Company | 2603 |
5 |
| Ericsson | 22839 |
5 |
| CertusView Technologies, LLC | 186 |
5 |
| KT Corporation | 2088 |
5 |
| Qualcomm Incorporated | 92725 |
4 |
| Sony Corporation | 30128 |
4 |
| Panasonic Corporation | 18896 |
4 |
| Hubbell Incorporated | 3455 |
4 |
| Axonne Inc. | 12 |
4 |
| Apple Inc. | 58995 |
3 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48539 |
3 |
| Mitsubishi Electric Corporation | 48146 |
3 |
| Huawei Technologies Co., Ltd. | 123867 |
3 |
| Panasonic Intellectual Property Management Co., Ltd. | 34145 |
3 |
| Yamaha Corporation | 4083 |
3 |
| Hubbell Incorporated (Delaware) | 95 |
3 |
| Other owners | 123 |