- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 7/02 - Diaphragms for electromechanical transducersCones characterised by the construction
Patent holdings for IPC class H04R 7/02
Total number of patents in this class: 490
10-year publication summary
|
40
|
48
|
24
|
41
|
29
|
37
|
56
|
41
|
29
|
25
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Goertek Inc. | 2663 |
32 |
| Agc, Inc. | 4901 |
30 |
| Panasonic Intellectual Property Management Co., Ltd. | 31756 |
19 |
| Pioneer Corporation | 4301 |
18 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1952 |
18 |
| Samsung Electronics Co., Ltd. | 147334 |
17 |
| AAC Technologies Pte. Ltd. | 1465 |
16 |
| Panasonic Corporation | 20059 |
15 |
| Yamaha Corporation | 4074 |
13 |
| Tohoku Pioneer Corporation | 475 |
13 |
| Apple Inc. | 55345 |
12 |
| Infineon Technologies AG | 8247 |
9 |
| Foster Electric Company, Limited | 181 |
9 |
| AAC Microtech (Changzhou) Co., Ltd. | 758 |
8 |
| Knowles Electronics, LLC | 600 |
8 |
| Mogami Denki Corporation | 11 |
8 |
| LG Electronics Inc. | 73476 |
6 |
| Brane Audio, LLC | 60 |
6 |
| Bose Corporation | 3001 |
5 |
| Panasonic Automotive Systems Co., Ltd. | 1920 |
5 |
| Other owners | 223 |