- All sections
- H - Electricity
- H04Q - Selecting
- H04Q 5/20 - Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with indirect connection, i.e. through subordinate switching centre the subordinate centre permitting interconnection of subscribers connected thereto
Patent holdings for IPC class H04Q 5/20
Total number of patents in this class: 4
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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0
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0
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0
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1
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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
|
|---|---|---|
| NTT DoCoMo, Inc. | 14659 |
1 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2023 |
1 |
| AAC Technologies Pte. Ltd. | 1505 |
1 |
| Mymee, Inc. | 13 |
1 |
| Other owners | 0 |