- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 13/02 - Telephone receivers
Patent holdings for IPC class H04R 13/02
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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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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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hon Hai Precision Industry Co., Ltd. | 4017 |
1 |
| Infineon Technologies AG | 8360 |
1 |
| Tsinghua University | 6094 |
1 |
| Suzhou Sensorfun Electronics Co., Ltd | 6 |
1 |
| Other owners | 0 |