- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 45/42 - Centralised routing
Patent holdings for IPC class H04L 45/42
Total number of patents in this class: 632
10-year publication summary
|
8
|
2
|
4
|
3
|
4
|
46
|
84
|
201
|
222
|
51
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 100781 |
78 |
| Cisco Technology, Inc. | 18858 |
59 |
| VMware LLC | 6078 |
55 |
| Juniper Networks, Inc. | 3556 |
41 |
| Hewlett Packard Enterprise Development LP | 10702 |
40 |
| Nicira, Inc. | 1192 |
26 |
| Nippon Telegraph and Telephone Corporation | 14195 |
18 |
| Arista Networks, Inc. | 936 |
13 |
| Amazon Technologies, Inc. | 24422 |
11 |
| Microsoft Technology Licensing, LLC | 51439 |
10 |
| Ericsson | 20417 |
9 |
| Oracle International Corporation | 12313 |
8 |
| Ciena Corporation | 1927 |
8 |
| Futurewei Technologies, Inc. | 3708 |
8 |
| Citrix Systems, Inc. | 3905 |
8 |
| Level 3 Communications, LLC | 1428 |
8 |
| Barefoot Networks, Inc. | 154 |
6 |
| Mellanox Technologies Ltd. | 1097 |
6 |
| AT&T Intellectual Property I, L.P. | 9886 |
5 |
| EMC IP Holding Company LLC | 11079 |
5 |
| Other owners | 210 |