- 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: 692
10-year publication summary
|
41
|
41
|
50
|
48
|
37
|
38
|
28
|
20
|
19
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 120098 |
47 |
| Mitsubishi Electric Corporation | 47602 |
38 |
| ZTE Corporation | 43598 |
25 |
| Siemens AG | 24200 |
19 |
| Nippon Telegraph and Telephone Corporation | 15997 |
17 |
| Hewlett Packard Enterprise Development LP | 10885 |
14 |
| WAGO Verwaltungsgesellschaft mbH | 579 |
14 |
| Yazaki Corporation | 6963 |
12 |
| Ciena Corporation | 2146 |
11 |
| Cisco Technology, Inc. | 22278 |
10 |
| Omron Corporation | 7331 |
9 |
| Robert Bosch GmbH | 43587 |
8 |
| NEC Corporation | 36616 |
7 |
| Panasonic Corporation | 19586 |
7 |
| Ericsson | 22292 |
7 |
| Fujitsu Limited | 16998 |
7 |
| Futurewei Technologies, Inc. | 3771 |
7 |
| Qualcomm Incorporated | 90221 |
6 |
| Genesis Technical Systems Corp. | 16 |
6 |
| Honda Motor Co., Ltd. | 25871 |
5 |
| Other owners | 416 |