- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 15/02 - Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency
Patent holdings for IPC class H04R 15/02
Total number of patents in this class: 8
10-year publication summary
|
2
|
1
|
2
|
0
|
2
|
0
|
1
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Harman Professional Inc | 84 |
3 |
| Butterfly Network, Inc. | 168 |
1 |
| Goertek Inc. | 2591 |
1 |
| USound GmbH | 80 |
1 |
| Microfine Materials Technologies Pte. Ltd. | 12 |
1 |
| Hisense Laser Display Co., Ltd. | 356 |
1 |
| Other owners | 0 |