- 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: 507
10-year publication summary
|
48
|
25
|
42
|
30
|
37
|
56
|
41
|
29
|
33
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Agc, Inc. | 5502 |
34 |
| Goertek Inc. | 2820 |
32 |
| Panasonic Intellectual Property Management Co., Ltd. | 33911 |
19 |
| Pioneer Corporation | 3782 |
18 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2023 |
18 |
| Samsung Electronics Co., Ltd. | 157557 |
17 |
| AAC Technologies Pte. Ltd. | 1505 |
16 |
| Panasonic Corporation | 19060 |
15 |
| Apple Inc. | 58705 |
13 |
| Yamaha Corporation | 4071 |
13 |
| Tohoku Pioneer Corporation | 467 |
13 |
| Infineon Technologies AG | 8400 |
10 |
| AAC Microtech (Changzhou) Co., Ltd. | 1021 |
9 |
| Foster Electric Company, Limited | 198 |
9 |
| Knowles Electronics, LLC | 593 |
8 |
| Mogami Denki Corporation | 11 |
8 |
| LG Electronics Inc. | 75654 |
6 |
| Brane Audio, LLC | 61 |
6 |
| Bose Corporation | 3093 |
5 |
| Panasonic Automotive Systems Co., Ltd. | 2072 |
5 |
| Other owners | 233 |