- All sections
- H - Electricity
- H04J - Multiplex communication
- H04J 14/02 - Wavelength-division multiplex systems
Patent holdings for IPC class H04J 14/02
Total number of patents in this class: 6671
10-year publication summary
|
622
|
583
|
558
|
558
|
420
|
418
|
412
|
334
|
296
|
162
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 123282 |
691 |
| NEC Corporation | 36934 |
406 |
| Ciena Corporation | 2173 |
246 |
| Nippon Telegraph and Telephone Corporation | 15922 |
227 |
| Telefonaktiebolaget LM Ericsson (publ) | 28744 |
203 |
| Fujitsu Limited | 16862 |
200 |
| Infinera Corporation | 636 |
197 |
| ZTE Corporation | 44159 |
168 |
| Ericsson | 22660 |
134 |
| Futurewei Technologies, Inc. | 3783 |
124 |
| Cisco Technology, Inc. | 22491 |
123 |
| 1FINITY Inc. | 1508 |
108 |
| Mitsubishi Electric Corporation | 47971 |
101 |
| II-VI Delaware, Inc. | 1624 |
88 |
| AT&T Intellectual Property I, L.P. | 9993 |
83 |
| Alcatel Lucent | 4333 |
80 |
| Marvell Asia PTE, Ltd. | 6313 |
72 |
| Cable Television Laboratories, Inc. | 1098 |
71 |
| Ntt, Inc. | 4107 |
70 |
| Juniper Networks, Inc. | 3721 |
68 |
| Other owners | 3211 |