- 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: 6577
10-year publication summary
|
582
|
613
|
580
|
551
|
543
|
414
|
415
|
395
|
315
|
237
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 114462 |
678 |
| NEC Corporation | 36129 |
406 |
| Nippon Telegraph and Telephone Corporation | 16793 |
248 |
| Fujitsu Limited | 17692 |
236 |
| Ciena Corporation | 2044 |
234 |
| Telefonaktiebolaget LM Ericsson (publ) | 28377 |
203 |
| Infinera Corporation | 639 |
195 |
| ZTE Corporation | 42809 |
170 |
| Ericsson | 21917 |
129 |
| Cisco Technology, Inc. | 22061 |
126 |
| Futurewei Technologies, Inc. | 3761 |
123 |
| Mitsubishi Electric Corporation | 46618 |
99 |
| II-VI Delaware, Inc. | 1653 |
87 |
| 1FINITY Inc. | 750 |
85 |
| Alcatel Lucent | 4505 |
82 |
| AT&T Intellectual Property I, L.P. | 9613 |
76 |
| Marvell Asia PTE, Ltd. | 6439 |
70 |
| Cable Television Laboratories, Inc. | 1017 |
68 |
| Juniper Networks, Inc. | 3745 |
67 |
| Hewlett Packard Enterprise Development LP | 10751 |
67 |
| Other owners | 3128 |