- 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: 49
10-year publication summary
|
8
|
7
|
2
|
2
|
5
|
4
|
3
|
3
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Telegraph and Telephone Corporation | 14195 |
5 |
| SoftBank Corp. | 543 |
5 |
| NEC Platforms, Ltd. | 1106 |
3 |
| Fujitsu Limited | 19265 |
2 |
| Huawei Technologies Co., Ltd. | 100781 |
2 |
| T-Mobile USA, Inc. | 3668 |
2 |
| Cyara Solutions Corp. | 9 |
2 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| Qualcomm Incorporated | 76576 |
1 |
| NEC Corporation | 32703 |
1 |
| Alcatel Lucent SA | 1723 |
1 |
| ZTE Corporation | 39218 |
1 |
| RPX Corporation | 1571 |
1 |
| Nokia Solutions And Networks Oy | 5698 |
1 |
| Inventec Corporation | 797 |
1 |
| University of Florida Research Foundation, Inc. | 3883 |
1 |
| Adtran, Inc. | 443 |
1 |
| Assurant, Inc. | 232 |
1 |
| Baidu Online Network Technology (Beijing) Co., Ltd | 1594 |
1 |
| Other owners | 14 |