- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 7/12 - Non-planar diaphragms or cones
Patent holdings for IPC class H04R 7/12
Total number of patents in this class: 834
10-year publication summary
|
62
|
92
|
112
|
89
|
109
|
97
|
96
|
80
|
68
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AAC Technologies Pte. Ltd. | 1451 |
69 |
| Goertek Inc. | 2625 |
66 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1905 |
49 |
| AAC Microtech (Changzhou) Co., Ltd. | 691 |
48 |
| Apple Inc. | 54076 |
29 |
| Yamaha Corporation | 4084 |
28 |
| Bose Corporation | 2955 |
23 |
| Panasonic Automotive Systems Co., Ltd. | 1823 |
22 |
| Sony Corporation | 31227 |
20 |
| PSS Belgium N.V. | 114 |
17 |
| Panasonic Intellectual Property Management Co., Ltd. | 30670 |
16 |
| Pioneer Corporation | 4428 |
16 |
| Tohoku Pioneer Corporation | 476 |
15 |
| Sonos, Inc. | 2537 |
14 |
| B & W Group Ltd | 353 |
13 |
| Harman International Industries, Incorporated | 2587 |
12 |
| Knowles Electronics, LLC | 600 |
11 |
| Sound Fun Corporation | 16 |
11 |
| LG Electronics Inc. | 72038 |
10 |
| Panasonic Corporation | 20207 |
9 |
| Other owners | 336 |