- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 12/44 - Star or tree networks
Patent holdings for IPC class H04L 12/44
Total number of patents in this class: 1072
10-year publication summary
|
46
|
65
|
100
|
89
|
75
|
121
|
83
|
76
|
48
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Telegraph and Telephone Corporation | 14195 |
153 |
| Mitsubishi Electric Corporation | 43934 |
109 |
| Sumitomo Electric Industries, Ltd. | 14131 |
58 |
| NEC Corporation | 32703 |
50 |
| Cisco Technology, Inc. | 18858 |
43 |
| Fujitsu Limited | 19265 |
29 |
| Huawei Technologies Co., Ltd. | 100781 |
27 |
| Arrcus, Inc. | 85 |
27 |
| Oracle International Corporation | 12313 |
23 |
| Sumitomo Wiring Systems, Ltd. | 9367 |
18 |
| AutoNetworks Technologies, Ltd. | 5809 |
17 |
| Hitachi, Ltd. | 16452 |
11 |
| Ericsson | 20417 |
10 |
| Panasonic Intellectual Property Corporation of America | 7230 |
10 |
| Yamaha Corporation | 4054 |
9 |
| Dell Products L.P. | 11144 |
8 |
| Hewlett Packard Enterprise Development LP | 10702 |
8 |
| Google LLC | 38759 |
7 |
| Mellanox Technologies Ltd. | 1097 |
7 |
| Netgear, Inc. | 285 |
7 |
| Other owners | 441 |