- All sections
- H - Electricity
- H04Q - Selecting
- H04Q 1/44 - Signalling arrangementsManipulation of signalling currents using AC
Patent holdings for IPC class H04Q 1/44
Total number of patents in this class: 5
10-year publication summary
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0
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0
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0
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0
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0
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0
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2
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Battelle Memorial Institute | 2608 |
2 |
| Sony Ericsson Mobile Communications AB | 1358 |
1 |
| ZTE Corporation | 44255 |
1 |
| Creative Technology Ltd | 444 |
1 |
| Other owners | 0 |