- 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: 731
10-year publication summary
58
|
53
|
42
|
43
|
52
|
49
|
36
|
34
|
25
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Huawei Technologies Co., Ltd. | 100781 |
56 |
Mitsubishi Electric Corporation | 43934 |
37 |
ZTE Corporation | 39218 |
26 |
Siemens AG | 24990 |
20 |
WAGO Verwaltungsgesellschaft mbH | 462 |
14 |
Hewlett Packard Enterprise Development LP | 10702 |
13 |
Nippon Telegraph and Telephone Corporation | 14195 |
12 |
Fujitsu Limited | 19265 |
11 |
Ciena Corporation | 1927 |
11 |
NEC Corporation | 32703 |
10 |
Cisco Technology, Inc. | 18858 |
10 |
Yazaki Corporation | 6282 |
10 |
Robert Bosch GmbH | 40953 |
9 |
Ericsson | 20417 |
8 |
Omron Corporation | 6968 |
8 |
International Business Machines Corporation | 60644 |
7 |
Panasonic Corporation | 20786 |
7 |
Futurewei Technologies, Inc. | 3708 |
7 |
Aviat U.S., Inc. | 219 |
7 |
Beckhoff Automation GmbH | 486 |
7 |
Other owners | 441 |