- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 7/18 - Mounting or tensioning of diaphragms or cones at the periphery
Patent holdings for IPC class H04R 7/18
Total number of patents in this class: 709
10-year publication summary
|
22
|
60
|
69
|
112
|
68
|
95
|
54
|
87
|
82
|
30
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AAC Technologies Pte. Ltd. | 1436 |
56 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1827 |
41 |
| Goertek Inc. | 2477 |
40 |
| AAC Microtech (Changzhou) Co., Ltd. | 458 |
39 |
| Apple Inc. | 50209 |
28 |
| Bose Corporation | 2880 |
25 |
| Pioneer Corporation | 4843 |
24 |
| Tohoku Pioneer Corporation | 477 |
24 |
| Panasonic Corporation | 20786 |
12 |
| Knowles Electronics, LLC | 597 |
12 |
| PSS Belgium N.V. | 96 |
12 |
| Infineon Technologies AG | 8189 |
11 |
| Panasonic Automotive Systems Co., Ltd. | 1440 |
11 |
| Samsung Electronics Co., Ltd. | 131630 |
10 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
10 |
| DB HiTek Co., Ltd. | 359 |
9 |
| Murata Manufacturing Co., Ltd. | 22355 |
8 |
| Kyocera Corporation | 12735 |
8 |
| xMEMS Labs, Inc. | 76 |
8 |
| Sony Corporation | 32931 |
7 |
| Other owners | 314 |