- 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: 6696
10-year publication summary
|
622
|
583
|
558
|
558
|
420
|
420
|
413
|
335
|
297
|
198
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 124379 |
690 |
| NEC Corporation | 37227 |
408 |
| Ciena Corporation | 2196 |
248 |
| Nippon Telegraph and Telephone Corporation | 15938 |
227 |
| Telefonaktiebolaget LM Ericsson (publ) | 28872 |
203 |
| Fujitsu Limited | 16859 |
200 |
| Infinera Corporation | 636 |
197 |
| ZTE Corporation | 44288 |
168 |
| Ericsson | 22929 |
138 |
| Futurewei Technologies, Inc. | 3787 |
124 |
| Cisco Technology, Inc. | 22584 |
123 |
| 1FINITY Inc. | 1537 |
111 |
| Mitsubishi Electric Corporation | 48236 |
102 |
| II-VI Delaware, Inc. | 1617 |
87 |
| AT&T Intellectual Property I, L.P. | 10013 |
83 |
| Alcatel Lucent | 4305 |
80 |
| Ntt, Inc. | 4429 |
74 |
| Cable Television Laboratories, Inc. | 1110 |
73 |
| Hewlett Packard Enterprise Development LP | 11519 |
72 |
| Marvell Asia PTE, Ltd. | 6258 |
72 |
| Other owners | 3216 |