- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 7/00 - Diaphragms for electromechanical transducers; Cones
Patent holdings for IPC class H04R 7/00
Total number of patents in this class: 194
10-year publication summary
|
28
|
14
|
14
|
13
|
13
|
18
|
14
|
18
|
5
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Goertek Inc. | 2477 |
17 |
| Bose Corporation | 2880 |
12 |
| AAC Technologies Pte. Ltd. | 1436 |
10 |
| Wing Acoustics Limited | 19 |
8 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1827 |
6 |
| Panasonic Corporation | 20786 |
5 |
| Infineon Technologies AG | 8189 |
4 |
| B & W Group Ltd | 344 |
4 |
| Samsung Electronics Co., Ltd. | 131630 |
3 |
| Apple Inc. | 50209 |
3 |
| LG Electronics Inc. | 69257 |
3 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
3 |
| Yamaha Corporation | 4054 |
3 |
| Tsinghua University | 5426 |
3 |
| Harman Becker Automotive Systems GmbH | 645 |
3 |
| Harman International Industries, Incorporated | 2443 |
3 |
| EM-TECH. Co., Ltd. | 65 |
3 |
| Panasonic Automotive Systems Co., Ltd. | 1440 |
3 |
| Toshiba Corporation | 12017 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| Other owners | 94 |