- 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: 508
10-year publication summary
|
48
|
25
|
42
|
30
|
37
|
56
|
41
|
29
|
33
|
16
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Agc, Inc. | 5557 |
34 |
| Goertek Inc. | 2827 |
32 |
| Panasonic Intellectual Property Management Co., Ltd. | 34080 |
19 |
| Pioneer Corporation | 3779 |
18 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2023 |
18 |
| Samsung Electronics Co., Ltd. | 158156 |
17 |
| AAC Technologies Pte. Ltd. | 1505 |
16 |
| Panasonic Corporation | 18951 |
15 |
| Apple Inc. | 58936 |
13 |
| Yamaha Corporation | 4076 |
13 |
| Tohoku Pioneer Corporation | 465 |
13 |
| Infineon Technologies AG | 8405 |
10 |
| AAC Microtech (Changzhou) Co., Ltd. | 1033 |
9 |
| Foster Electric Company, Limited | 203 |
9 |
| Knowles Electronics, LLC | 593 |
8 |
| Mogami Denki Corporation | 11 |
8 |
| LG Electronics Inc. | 75845 |
6 |
| Brane Audio, LLC | 61 |
6 |
| Bose Corporation | 3095 |
5 |
| Panasonic Automotive Systems Co., Ltd. | 2086 |
5 |
| Other owners | 234 |