- 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: 6640
10-year publication summary
|
622
|
583
|
558
|
558
|
420
|
418
|
410
|
327
|
291
|
107
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 120453 |
691 |
| NEC Corporation | 36656 |
408 |
| Ciena Corporation | 2152 |
242 |
| Nippon Telegraph and Telephone Corporation | 15996 |
228 |
| Fujitsu Limited | 17003 |
210 |
| Telefonaktiebolaget LM Ericsson (publ) | 28623 |
203 |
| Infinera Corporation | 638 |
197 |
| ZTE Corporation | 43624 |
169 |
| Ericsson | 22306 |
130 |
| Cisco Technology, Inc. | 22300 |
124 |
| Futurewei Technologies, Inc. | 3775 |
124 |
| Mitsubishi Electric Corporation | 47625 |
101 |
| 1FINITY Inc. | 1301 |
99 |
| II-VI Delaware, Inc. | 1622 |
87 |
| AT&T Intellectual Property I, L.P. | 9859 |
82 |
| Alcatel Lucent | 4376 |
82 |
| Cable Television Laboratories, Inc. | 1071 |
72 |
| Marvell Asia PTE, Ltd. | 6342 |
72 |
| Juniper Networks, Inc. | 3779 |
68 |
| Hewlett Packard Enterprise Development LP | 10897 |
67 |
| Other owners | 3184 |