- 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: 6607
10-year publication summary
|
613
|
580
|
551
|
543
|
414
|
414
|
404
|
319
|
290
|
58
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 118879 |
688 |
| NEC Corporation | 36475 |
407 |
| Ciena Corporation | 2096 |
237 |
| Nippon Telegraph and Telephone Corporation | 16263 |
229 |
| Fujitsu Limited | 17265 |
223 |
| Telefonaktiebolaget LM Ericsson (publ) | 28564 |
203 |
| Infinera Corporation | 640 |
198 |
| ZTE Corporation | 43451 |
168 |
| Ericsson | 22203 |
130 |
| Cisco Technology, Inc. | 22239 |
127 |
| Futurewei Technologies, Inc. | 3768 |
123 |
| Mitsubishi Electric Corporation | 47449 |
100 |
| II-VI Delaware, Inc. | 1641 |
88 |
| 1FINITY Inc. | 1089 |
86 |
| Alcatel Lucent | 4427 |
82 |
| AT&T Intellectual Property I, L.P. | 9811 |
79 |
| Cable Television Laboratories, Inc. | 1061 |
72 |
| Marvell Asia PTE, Ltd. | 6376 |
71 |
| Juniper Networks, Inc. | 3783 |
67 |
| Hewlett Packard Enterprise Development LP | 10814 |
67 |
| Other owners | 3162 |