- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 12/42 - Loop networks
Patent holdings for IPC class H04L 12/42
Total number of patents in this class: 706
10-year publication summary
|
53
|
42
|
43
|
52
|
49
|
37
|
38
|
28
|
17
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 111237 |
52 |
| Mitsubishi Electric Corporation | 45860 |
38 |
| ZTE Corporation | 42052 |
26 |
| Siemens AG | 24547 |
19 |
| Nippon Telegraph and Telephone Corporation | 17207 |
16 |
| WAGO Verwaltungsgesellschaft mbH | 528 |
14 |
| Hewlett Packard Enterprise Development LP | 10708 |
13 |
| Yazaki Corporation | 6623 |
12 |
| Ciena Corporation | 2020 |
11 |
| Cisco Technology, Inc. | 19655 |
9 |
| NEC Corporation | 35424 |
8 |
| Fujitsu Limited | 18362 |
8 |
| Robert Bosch GmbH | 42505 |
8 |
| Omron Corporation | 7238 |
8 |
| Aviat U.S., Inc. | 212 |
8 |
| Beckhoff Automation GmbH | 516 |
8 |
| Panasonic Corporation | 20166 |
7 |
| Ericsson | 21622 |
7 |
| Futurewei Technologies, Inc. | 3749 |
7 |
| Genesis Technical Systems Corp. | 18 |
6 |
| Other owners | 421 |