- All sections
- H - Electricity
- H04Q - Selecting
- H04Q 1/46 - Signalling arrangementsManipulation of signalling currents using AC with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current
Patent holdings for IPC class H04Q 1/46
Total number of patents in this class: 17
10-year publication summary
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1
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3
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3
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1
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1
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1
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0
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1
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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
|
|---|---|---|
| Ericsson | 22283 |
6 |
| Cluster LLC | 13 |
4 |
| Samsung Electronics Co., Ltd. | 153573 |
1 |
| AT&T Intellectual Property I, L.P. | 9831 |
1 |
| Intel Corporation | 46638 |
1 |
| Amazon Technologies, Inc. | 27683 |
1 |
| Skyworks Solutions, Inc. | 3884 |
1 |
| Telefonaktiebolaget LM Ericsson (publ) | 28615 |
1 |
| Freescale Semiconductor, Inc. | 240 |
1 |
| Other owners | 0 |