- 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
|
96
|
87
|
73
|
113
|
81
|
76
|
50
|
39
|
24
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Telegraph and Telephone Corporation | 16247 |
167 |
| Mitsubishi Electric Corporation | 47511 |
108 |
| Sumitomo Electric Industries, Ltd. | 16050 |
57 |
| Cisco Technology, Inc. | 22240 |
50 |
| NEC Corporation | 36545 |
47 |
| Arrcus, Inc. | 108 |
30 |
| Fujitsu Limited | 17131 |
26 |
| Huawei Technologies Co., Ltd. | 119623 |
25 |
| Oracle International Corporation | 13406 |
24 |
| Sumitomo Wiring Systems, Ltd. | 10749 |
21 |
| AutoNetworks Technologies, Ltd. | 6906 |
20 |
| Hitachi, Ltd. | 15862 |
11 |
| Panasonic Intellectual Property Corporation of America | 7054 |
11 |
| Yamaha Corporation | 4067 |
9 |
| Ericsson | 22237 |
8 |
| Dell Products L.P. | 16112 |
8 |
| Hewlett Packard Enterprise Development LP | 10835 |
8 |
| Google LLC | 43643 |
8 |
| Denso Corporation | 25115 |
7 |
| Arista Networks, Inc. | 1205 |
7 |
| Other owners | 420 |