- 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: 1067
10-year publication summary
|
100
|
89
|
75
|
122
|
83
|
76
|
51
|
41
|
24
|
21
|
| 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 | 15898 |
167 |
| Mitsubishi Electric Corporation | 48508 |
106 |
| Sumitomo Electric Industries, Ltd. | 16419 |
57 |
| Cisco Technology, Inc. | 22668 |
50 |
| NEC Corporation | 37563 |
47 |
| Arrcus, Inc. | 115 |
30 |
| Huawei Technologies Co., Ltd. | 125590 |
26 |
| Oracle International Corporation | 13759 |
24 |
| Fujitsu Limited | 16814 |
22 |
| Sumitomo Wiring Systems, Ltd. | 11259 |
21 |
| AutoNetworks Technologies, Ltd. | 7319 |
20 |
| Hitachi, Ltd. | 16237 |
11 |
| Panasonic Intellectual Property Corporation of America | 7318 |
11 |
| Ntt, Inc. | 4843 |
11 |
| Yamaha Corporation | 4098 |
9 |
| Hewlett Packard Enterprise Development LP | 12492 |
9 |
| Ericsson | 23125 |
8 |
| Dell Products L.P. | 17348 |
8 |
| Google LLC | 44941 |
8 |
| Denso Corporation | 25909 |
7 |
| Other owners | 415 |