- 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: 47
10-year publication summary
|
2
|
2
|
4
|
4
|
3
|
3
|
2
|
3
|
0
|
0
|
| 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 | 16002 |
5 |
| SoftBank Corp. | 790 |
5 |
| T-Mobile USA, Inc. | 4388 |
3 |
| Fujitsu Limited | 16989 |
2 |
| Huawei Technologies Co., Ltd. | 119891 |
2 |
| NEC Platforms, Ltd. | 1066 |
2 |
| Cyara Solutions Corp. | 9 |
2 |
| Telefonaktiebolaget LM Ericsson (publ) | 28615 |
2 |
| Samsung Electronics Co., Ltd. | 153573 |
1 |
| Qualcomm Incorporated | 90109 |
1 |
| Alcatel Lucent SA | 1552 |
1 |
| ZTE Corporation | 43576 |
1 |
| RPX Corporation | 1206 |
1 |
| Nokia Solutions And Networks Oy | 7054 |
1 |
| Inventec Corporation | 948 |
1 |
| University of Florida Research Foundation, Inc. | 4140 |
1 |
| Adtran, Inc. | 410 |
1 |
| Assurant, Inc. | 290 |
1 |
| Baidu Online Network Technology (Beijing) Co., Ltd | 1590 |
1 |
| Cable Sense Limited | 5 |
1 |
| Other owners | 12 |