- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 12/939 - Provisions for redundant switching, e.g. using parallel switching planes
Patent holdings for IPC class H04L 12/939
Total number of patents in this class: 542
10-year publication summary
|
110
|
96
|
70
|
88
|
65
|
58
|
25
|
9
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Intel Corporation | 45621 |
40 |
| Cisco Technology, Inc. | 18858 |
25 |
| Huawei Technologies Co., Ltd. | 100781 |
20 |
| Hewlett Packard Enterprise Development LP | 10702 |
17 |
| Juniper Networks, Inc. | 3556 |
14 |
| International Business Machines Corporation | 60644 |
13 |
| Ericsson | 20417 |
12 |
| NEC Corporation | 32703 |
11 |
| Strong Force IoT Portfolio 2016, LLC | 320 |
11 |
| Dell Products L.P. | 11144 |
10 |
| APRESIA Systems, Ltd. | 38 |
10 |
| AAA Holdings, Ltd. | 34 |
10 |
| Ciena Corporation | 1927 |
9 |
| Avago Technologies International Sales Pte. Limited | 9260 |
9 |
| Amazon Technologies, Inc. | 24422 |
8 |
| Fujitsu Limited | 19265 |
7 |
| Google LLC | 38759 |
7 |
| Marvell Israel (M.I.S.L) Ltd. | 511 |
6 |
| Nippon Telegraph and Telephone Corporation | 14195 |
6 |
| CellSpinSoft Inc. | 19 |
6 |
| Other owners | 291 |