- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/53 - Generation of additional signals, e.g. additional pulses
Patent holdings for IPC class H04M 1/53
Total number of patents in this class: 2
10-year publication summary
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qualcomm Incorporated | 76576 |
1 |
| Tencent Technology (Shenzhen) Company Limited | 12951 |
1 |
| Other owners | 0 |