- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/654 - Telephone line monitoring circuits therefor, e.g. ring detectors
Patent holdings for IPC class H04M 1/654
Total number of patents in this class: 9
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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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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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GN Netcom AS | 195 |
2 |
| Konica Minolta, Inc. | 8349 |
1 |
| ZTE Corporation | 39218 |
1 |
| BCE Inc. | 431 |
1 |
| Verint Americas Inc. | 540 |
1 |
| Ixel | 2 |
1 |
| After the Tone, LLC | 17 |
1 |
| Malikie Innovations Limited | 7703 |
1 |
| Other owners | 0 |