- All sections
- H - Electricity
- H04B - Transmission
- H04B 10/548 - Phase or frequency modulation
Patent holdings for IPC class H04B 10/548
Total number of patents in this class: 469
10-year publication summary
|
31
|
42
|
45
|
35
|
47
|
65
|
53
|
49
|
40
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NEC Corporation | 32703 |
39 |
| Fujitsu Limited | 19265 |
37 |
| Huawei Technologies Co., Ltd. | 100781 |
31 |
| Infinera Corporation | 620 |
31 |
| Nippon Telegraph and Telephone Corporation | 14195 |
27 |
| Ciena Corporation | 1927 |
8 |
| Cable Television Laboratories, Inc. | 876 |
6 |
| Xieon Networks S.a.r.l. | 172 |
6 |
| PhotonIC Technologies (Shanghai) Co., Ltd | 19 |
6 |
| Lightmatter, Inc. | 128 |
6 |
| Signify Holding B.V. | 6837 |
6 |
| Intel Corporation | 45621 |
5 |
| ZTE Corporation | 39218 |
5 |
| National Institute of Information and Communications Technology | 594 |
5 |
| OpenLight Photonics, Inc | 180 |
5 |
| Toshiba Corporation | 12017 |
4 |
| Ericsson | 20417 |
4 |
| Fujitsu Optical Components Limited | 266 |
4 |
| Cisco Technology, Inc. | 18858 |
4 |
| Mitsubishi Electric Corporation | 43934 |
4 |
| Other owners | 226 |