- All sections
- H - Electricity
- H04Q - Selecting
- H04Q 1/453 - Signalling arrangementsManipulation of signalling currents using AC with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
Patent holdings for IPC class H04Q 1/453
Total number of patents in this class: 3
10-year publication summary
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Genesys Cloud Services, Inc., FORMERLY Genesys Telecommunications Laboratories, Inc. | 1062 |
2 |
| LSI Corporation | 156 |
1 |
| Other owners | 0 |