- 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: 185
10-year publication summary
|
14
|
13
|
13
|
18
|
14
|
19
|
6
|
6
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Goertek Inc. | 2793 |
17 |
| Bose Corporation | 3088 |
12 |
| Wing Acoustics Limited | 26 |
8 |
| AAC Technologies Pte. Ltd. | 1498 |
8 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2013 |
6 |
| Panasonic Corporation | 19386 |
4 |
| Infineon Technologies AG | 8382 |
4 |
| B & W Group Ltd | 350 |
4 |
| Samsung Electronics Co., Ltd. | 155224 |
3 |
| LG Electronics Inc. | 75274 |
3 |
| Hon Hai Precision Industry Co., Ltd. | 4024 |
3 |
| Robert Bosch GmbH | 43788 |
3 |
| Yamaha Corporation | 4066 |
3 |
| Tsinghua University | 6128 |
3 |
| Harman International Industries, Incorporated | 2827 |
3 |
| EM-TECH. Co., Ltd. | 89 |
3 |
| Panasonic Automotive Systems Co., Ltd. | 2046 |
3 |
| Apple Inc. | 58268 |
2 |
| Toshiba Corporation | 12687 |
2 |
| Murata Manufacturing Co., Ltd. | 25590 |
2 |
| Other owners | 89 |