- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 15/34 - Metering arrangements for private branch exchanges
Patent holdings for IPC class H04M 15/34
Total number of patents in this class: 18
10-year publication summary
|
2
|
3
|
1
|
2
|
2
|
4
|
2
|
1
|
2
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Twilio, Inc. | 456 |
7 |
| Bullhead Innovations Ltd. | 17 |
5 |
| 8x8, Inc. | 398 |
3 |
| Huawei Technologies Co., Ltd. | 100781 |
1 |
| at Comm Corporation | 10 |
1 |
| T-Mobile Innovations LLC | 3213 |
1 |
| Other owners | 0 |