- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 7/24 - Tensioning by means acting directly on free portion of diaphragm or cone
Patent holdings for IPC class H04R 7/24
Total number of patents in this class: 63
10-year publication summary
|
12
|
12
|
6
|
6
|
9
|
1
|
5
|
3
|
3
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wing Acoustics Limited | 26 |
13 |
| Bose Corporation | 3092 |
6 |
| Infineon Technologies AG | 8402 |
3 |
| Goertek Inc. | 2825 |
3 |
| Knowles Electronics, LLC | 593 |
3 |
| Sonos, Inc. | 2864 |
3 |
| FUJIFILM Corporation | 30516 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 34035 |
2 |
| Yamaha Corporation | 4073 |
2 |
| STMicroelectronics S.r.l. | 3374 |
2 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11124 |
2 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2023 |
2 |
| audio-technica Corporation | 371 |
2 |
| Immerz, Inc. | 19 |
2 |
| Grawe & Schneider Gdbr | 6 |
2 |
| International Business Machines Corporation | 62671 |
1 |
| Centre National de La Recherche Scientifique | 11026 |
1 |
| Robert Bosch GmbH | 44176 |
1 |
| Nokia Technologies Oy | 21300 |
1 |
| Boe Technology Group Co., Ltd. | 44074 |
1 |
| Other owners | 9 |