- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 7/00 - Diaphragms for electromechanical transducersCones
Patent holdings for IPC class H04R 7/00
Total number of patents in this class: 184
10-year publication summary
|
14
|
13
|
13
|
18
|
14
|
19
|
6
|
7
|
1
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Goertek Inc. | 2821 |
18 |
| Bose Corporation | 3092 |
12 |
| Wing Acoustics Limited | 26 |
8 |
| AAC Technologies Pte. Ltd. | 1505 |
8 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2023 |
6 |
| Panasonic Corporation | 19019 |
4 |
| Infineon Technologies AG | 8402 |
4 |
| B & W Group Ltd | 351 |
4 |
| Samsung Electronics Co., Ltd. | 157719 |
3 |
| Hon Hai Precision Industry Co., Ltd. | 4022 |
3 |
| Robert Bosch GmbH | 44160 |
3 |
| Yamaha Corporation | 4074 |
3 |
| Tsinghua University | 6211 |
3 |
| Harman International Industries, Incorporated | 2877 |
3 |
| EM-TECH. Co., Ltd. | 87 |
3 |
| Panasonic Automotive Systems Co., Ltd. | 2076 |
3 |
| Apple Inc. | 58742 |
2 |
| Toshiba Corporation | 12560 |
2 |
| Murata Manufacturing Co., Ltd. | 25744 |
2 |
| Panasonic Intellectual Property Management Co., Ltd. | 33997 |
2 |
| Other owners | 88 |