- 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: 1075
10-year publication summary
|
65
|
100
|
89
|
75
|
122
|
83
|
76
|
48
|
39
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Telegraph and Telephone Corporation | 16380 |
162 |
| Mitsubishi Electric Corporation | 44904 |
109 |
| Sumitomo Electric Industries, Ltd. | 14990 |
58 |
| NEC Corporation | 34467 |
50 |
| Cisco Technology, Inc. | 19412 |
45 |
| Arrcus, Inc. | 98 |
30 |
| Fujitsu Limited | 18401 |
29 |
| Huawei Technologies Co., Ltd. | 106915 |
27 |
| Oracle International Corporation | 12587 |
23 |
| Sumitomo Wiring Systems, Ltd. | 10025 |
19 |
| AutoNetworks Technologies, Ltd. | 6332 |
18 |
| Hitachi, Ltd. | 15239 |
11 |
| Panasonic Intellectual Property Corporation of America | 7423 |
11 |
| Ericsson | 21171 |
9 |
| Yamaha Corporation | 4071 |
9 |
| Dell Products L.P. | 13117 |
8 |
| Hewlett Packard Enterprise Development LP | 10650 |
8 |
| Robert Bosch GmbH | 41823 |
7 |
| Arista Networks, Inc. | 1027 |
7 |
| Google LLC | 40924 |
7 |
| Other owners | 428 |