- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 3/26 - Arrangements for supervision, monitoring or testing with means for applying test signals
Patent holdings for IPC class H04M 3/26
Total number of patents in this class: 48
10-year publication summary
|
7
|
2
|
2
|
5
|
4
|
3
|
3
|
2
|
3
|
0
|
| 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 | 16996 |
5 |
| SoftBank Corp. | 628 |
5 |
| NEC Platforms, Ltd. | 1145 |
3 |
| T-Mobile USA, Inc. | 4022 |
3 |
| Fujitsu Limited | 18332 |
2 |
| Huawei Technologies Co., Ltd. | 110033 |
2 |
| Cyara Solutions Corp. | 9 |
2 |
| Telefonaktiebolaget LM Ericsson (publ) | 27732 |
2 |
| Samsung Electronics Co., Ltd. | 143021 |
1 |
| Qualcomm Incorporated | 83961 |
1 |
| NEC Corporation | 35167 |
1 |
| Alcatel Lucent SA | 1604 |
1 |
| ZTE Corporation | 41819 |
1 |
| RPX Corporation | 1365 |
1 |
| Nokia Solutions And Networks Oy | 6482 |
1 |
| Inventec Corporation | 881 |
1 |
| University of Florida Research Foundation, Inc. | 3962 |
1 |
| Adtran, Inc. | 429 |
1 |
| Assurant, Inc. | 264 |
1 |
| Baidu Online Network Technology (Beijing) Co., Ltd | 1590 |
1 |
| Other owners | 12 |