- 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: 531
10-year publication summary
|
45
|
35
|
47
|
65
|
54
|
53
|
45
|
37
|
24
|
24
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NEC Corporation | 37168 |
42 |
| Infinera Corporation | 636 |
37 |
| Huawei Technologies Co., Ltd. | 124115 |
36 |
| Nippon Telegraph and Telephone Corporation | 15939 |
25 |
| Fujitsu Limited | 16854 |
23 |
| 1FINITY Inc. | 1530 |
13 |
| Ciena Corporation | 2193 |
9 |
| Signify Holding B.V. | 8118 |
8 |
| Cable Television Laboratories, Inc. | 1106 |
7 |
| Lightmatter, Inc. | 230 |
7 |
| Intel Corporation | 47178 |
6 |
| Mitsubishi Electric Corporation | 48172 |
6 |
| Phase Sensitive Innovations, Inc. | 91 |
6 |
| Xieon Networks S.a.r.l. | 160 |
6 |
| PhotonIC Technologies (Shanghai) Co., Ltd | 18 |
6 |
| Taara Connect, Inc. | 134 |
6 |
| Ericsson | 22880 |
5 |
| Cisco Technology, Inc. | 22555 |
5 |
| Electronics and Telecommunications Research Institute | 9684 |
5 |
| Raytheon Company | 8436 |
5 |
| Other owners | 268 |