- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 7/14 - Non-planar diaphragms or cones corrugated, pleated, or ribbed
Patent holdings for IPC class H04R 7/14
Total number of patents in this class: 178
10-year publication summary
|
10
|
27
|
22
|
18
|
16
|
12
|
15
|
13
|
7
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AAC Technologies Pte. Ltd. | 1436 |
11 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1827 |
10 |
| Goertek Inc. | 2477 |
10 |
| Pioneer Corporation | 4843 |
8 |
| Yamaha Corporation | 4054 |
7 |
| Tohoku Pioneer Corporation | 477 |
6 |
| Infineon Technologies AG | 8189 |
5 |
| Bose Corporation | 2880 |
5 |
| GP Acoustics (UK) Limited | 30 |
4 |
| Victor Company of Japan, Limited | 60 |
4 |
| Hahn-Schickard-Gesellschaft für angewandte Forschung e.V. | 114 |
4 |
| Knowles Electronics, LLC | 597 |
3 |
| Mogami Denki Corporation | 11 |
3 |
| Sennheiser electronic GmbH & Co. KG | 472 |
3 |
| Goertek Microelectronics Co., Ltd. | 20 |
3 |
| Pradnesh Mohare | 3 |
3 |
| Samsung Electronics Co., Ltd. | 131630 |
2 |
| Apple Inc. | 50209 |
2 |
| Sony Corporation | 32931 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| Other owners | 81 |