- All sections
- H - Electricity
- H04B - Transmission
- H04B 10/61 - Coherent receivers
Patent holdings for IPC class H04B 10/61
Total number of patents in this class: 2141
10-year publication summary
|
156
|
159
|
194
|
196
|
194
|
259
|
196
|
210
|
200
|
60
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NEC Corporation | 32703 |
226 |
| Huawei Technologies Co., Ltd. | 100781 |
170 |
| Nippon Telegraph and Telephone Corporation | 14195 |
158 |
| Fujitsu Limited | 19265 |
112 |
| Infinera Corporation | 620 |
85 |
| Marvell Asia PTE, Ltd. | 6841 |
80 |
| Ciena Corporation | 1927 |
71 |
| Cavium International | 5549 |
68 |
| Mitsubishi Electric Corporation | 43934 |
49 |
| Cable Television Laboratories, Inc. | 876 |
36 |
| Nokia Solutions And Networks Oy | 5698 |
35 |
| Raytheon Company | 8535 |
29 |
| NTT Electronics Corporation | 283 |
29 |
| Cisco Technology, Inc. | 18858 |
27 |
| ZTE Corporation | 39218 |
26 |
| Alcatel Lucent | 4720 |
24 |
| Futurewei Technologies, Inc. | 3708 |
21 |
| Xieon Networks S.a.r.l. | 172 |
20 |
| Ericsson | 20417 |
17 |
| Alcatel Lucent SA | 1723 |
16 |
| Other owners | 842 |