- 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: 6581
10-year publication summary
|
582
|
613
|
580
|
551
|
543
|
414
|
415
|
397
|
315
|
257
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 114984 |
681 |
| NEC Corporation | 36186 |
406 |
| Nippon Telegraph and Telephone Corporation | 16751 |
251 |
| Ciena Corporation | 2052 |
236 |
| Fujitsu Limited | 17665 |
232 |
| Telefonaktiebolaget LM Ericsson (publ) | 28413 |
203 |
| Infinera Corporation | 640 |
196 |
| ZTE Corporation | 42891 |
170 |
| Ericsson | 21968 |
129 |
| Cisco Technology, Inc. | 22095 |
126 |
| Futurewei Technologies, Inc. | 3762 |
123 |
| Mitsubishi Electric Corporation | 46757 |
99 |
| II-VI Delaware, Inc. | 1649 |
86 |
| 1FINITY Inc. | 771 |
85 |
| Alcatel Lucent | 4496 |
82 |
| AT&T Intellectual Property I, L.P. | 9647 |
76 |
| Marvell Asia PTE, Ltd. | 6432 |
71 |
| Cable Television Laboratories, Inc. | 1024 |
70 |
| Juniper Networks, Inc. | 3752 |
67 |
| Hewlett Packard Enterprise Development LP | 10765 |
67 |
| Other owners | 3125 |