- 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: 510
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 | 47122 |
38 |
| Cisco Technology, Inc. | 22503 |
25 |
| Hewlett Packard Enterprise Development LP | 11501 |
23 |
| Huawei Technologies Co., Ltd. | 123543 |
18 |
| International Business Machines Corporation | 62671 |
13 |
| Ericsson | 22785 |
12 |
| Powerbridge IP Protection LLC | 62 |
11 |
| Dell Products L.P. | 17032 |
10 |
| Ciena Corporation | 2183 |
9 |
| Avago Technologies International Sales Pte. Limited | 8552 |
9 |
| Amazon Technologies, Inc. | 28118 |
8 |
| Juniper Networks, Inc. | 3367 |
8 |
| VMware LLC | 6979 |
8 |
| NEC Corporation | 37005 |
7 |
| Google LLC | 44540 |
7 |
| APRESIA Systems, Ltd. | 33 |
7 |
| AAA Holdings, Ltd. | 30 |
7 |
| Marvell Israel (M.I.S.L) Ltd. | 491 |
6 |
| Nippon Telegraph and Telephone Corporation | 15923 |
6 |
| CellSpinSoft Inc. | 19 |
6 |
| Other owners | 272 |