- 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: 2279
10-year publication summary
|
159
|
194
|
196
|
194
|
259
|
198
|
214
|
214
|
165
|
61
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NEC Corporation | 35291 |
242 |
| Nippon Telegraph and Telephone Corporation | 17109 |
186 |
| Huawei Technologies Co., Ltd. | 110803 |
181 |
| Fujitsu Limited | 18355 |
110 |
| Infinera Corporation | 637 |
93 |
| Marvell Asia PTE, Ltd. | 6555 |
82 |
| Ciena Corporation | 2016 |
77 |
| Cavium International | 5084 |
67 |
| Mitsubishi Electric Corporation | 45752 |
52 |
| Cable Television Laboratories, Inc. | 983 |
42 |
| Nokia Solutions And Networks Oy | 6517 |
38 |
| Cisco Technology, Inc. | 19599 |
31 |
| Raytheon Company | 8395 |
31 |
| ZTE Corporation | 41969 |
29 |
| NTT Electronics Corporation | 272 |
29 |
| Alcatel Lucent | 4566 |
24 |
| Futurewei Technologies, Inc. | 3746 |
21 |
| Xieon Networks S.a.r.l. | 164 |
20 |
| Google LLC | 41766 |
19 |
| Ericsson | 21565 |
16 |
| Other owners | 889 |