- All sections
- H - Electricity
- H04M - Telephonic communication
- H04M 1/40 - Devices which can set up and transmit only one digit at a time by periodically opening and closing contacts to generate trains of pulses wherein the setting-operation short-circuits or open-circuits the transmitting mechanism during a variable part of a cycle
Patent holdings for IPC class H04M 1/40
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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2
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0
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0
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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
|
|---|---|---|
| Illinois Tool Works Inc. | 11152 |
1 |
| Hewlett-Packard Development Company, L.P. | 28538 |
1 |
| Winners' Sun Plastic & Electronic (Shenzhen) Co. Ltd | 34 |
1 |
| 138 East LCD Advancements Limited | 427 |
1 |
| NXP B.V. | 2185 |
1 |
| Other owners | 0 |