- 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: 820
10-year publication summary
|
62
|
92
|
112
|
89
|
109
|
97
|
96
|
80
|
68
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AAC Technologies Pte. Ltd. | 1441 |
69 |
| Goertek Inc. | 2592 |
66 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1883 |
49 |
| AAC Microtech (Changzhou) Co., Ltd. | 630 |
43 |
| Yamaha Corporation | 4071 |
28 |
| Apple Inc. | 52845 |
27 |
| Bose Corporation | 2925 |
23 |
| Sony Corporation | 31530 |
20 |
| Panasonic Automotive Systems Co., Ltd. | 1743 |
19 |
| Pioneer Corporation | 4620 |
16 |
| PSS Belgium N.V. | 108 |
16 |
| Panasonic Intellectual Property Management Co., Ltd. | 29800 |
15 |
| Tohoku Pioneer Corporation | 479 |
15 |
| Sonos, Inc. | 2466 |
14 |
| B & W Group Ltd | 353 |
13 |
| Harman International Industries, Incorporated | 2539 |
11 |
| Knowles Electronics, LLC | 605 |
11 |
| Sound Fun Corporation | 16 |
11 |
| LG Electronics Inc. | 71074 |
9 |
| Panasonic Corporation | 20313 |
9 |
| Other owners | 336 |