- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public 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: 59
10-year publication summary
|
0
|
10
|
12
|
12
|
6
|
6
|
9
|
1
|
5
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wing Acoustics Limited | 19 |
11 |
| Bose Corporation | 2880 |
6 |
| Goertek Inc. | 2477 |
3 |
| Knowles Electronics, LLC | 597 |
3 |
| Sonos, Inc. | 2274 |
3 |
| FUJIFILM Corporation | 27102 |
2 |
| Infineon Technologies AG | 8189 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
2 |
| Yamaha Corporation | 4054 |
2 |
| STMicroelectronics S.r.l. | 3693 |
2 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
2 |
| Immerz, Inc. | 18 |
2 |
| Grawe & Schneider Gdbr | 6 |
2 |
| International Business Machines Corporation | 60644 |
1 |
| NEC Corporation | 32703 |
1 |
| Centre National de La Recherche Scientifique | 9632 |
1 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
1 |
| Robert Bosch GmbH | 40953 |
1 |
| Nokia Technologies Oy | 15057 |
1 |
| Boe Technology Group Co., Ltd. | 35384 |
1 |
| Other owners | 10 |