- 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: 503
10-year publication summary
|
42
|
45
|
35
|
45
|
62
|
53
|
53
|
43
|
36
|
15
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NEC Corporation | 35778 |
41 |
| Fujitsu Limited | 18402 |
37 |
| Infinera Corporation | 635 |
35 |
| Huawei Technologies Co., Ltd. | 113064 |
34 |
| Nippon Telegraph and Telephone Corporation | 17362 |
28 |
| Ciena Corporation | 2032 |
8 |
| Cable Television Laboratories, Inc. | 1001 |
7 |
| Lightmatter, Inc. | 175 |
7 |
| Signify Holding B.V. | 7580 |
7 |
| Intel Corporation | 47033 |
6 |
| Xieon Networks S.a.r.l. | 163 |
6 |
| PhotonIC Technologies (Shanghai) Co., Ltd | 19 |
6 |
| Cisco Technology, Inc. | 19961 |
5 |
| Raytheon Company | 8387 |
5 |
| ZTE Corporation | 42569 |
5 |
| Phase Sensitive Innovations, Inc. | 82 |
5 |
| OpenLight Photonics, Inc | 190 |
5 |
| Taara Connect, Inc. | 113 |
5 |
| Samsung Electronics Co., Ltd. | 146811 |
4 |
| Toshiba Corporation | 12367 |
4 |
| Other owners | 243 |