- 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: 511
10-year publication summary
|
70
|
88
|
65
|
57
|
23
|
7
|
0
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Intel Corporation | 46681 |
38 |
| Cisco Technology, Inc. | 22300 |
25 |
| Huawei Technologies Co., Ltd. | 120453 |
18 |
| Hewlett Packard Enterprise Development LP | 10897 |
16 |
| Juniper Networks, Inc. | 3779 |
14 |
| International Business Machines Corporation | 62251 |
13 |
| Ericsson | 22306 |
12 |
| Strong Force IoT Portfolio 2016, LLC | 313 |
11 |
| Dell Products L.P. | 16409 |
10 |
| Ciena Corporation | 2152 |
9 |
| Avago Technologies International Sales Pte. Limited | 8611 |
9 |
| NEC Corporation | 36656 |
8 |
| Amazon Technologies, Inc. | 27726 |
8 |
| VMware LLC | 6826 |
8 |
| Google LLC | 43852 |
7 |
| APRESIA Systems, Ltd. | 33 |
7 |
| AAA Holdings, Ltd. | 30 |
7 |
| Marvell Israel (M.I.S.L) Ltd. | 496 |
6 |
| Nippon Telegraph and Telephone Corporation | 15996 |
6 |
| CellSpinSoft Inc. | 19 |
6 |
| Other owners | 273 |