- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 9/04 - Construction, mounting, or centering of coil
Patent holdings for IPC class H04R 9/04
Total number of patents in this class: 1751
10-year publication summary
|
105
|
110
|
123
|
139
|
175
|
180
|
177
|
200
|
141
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AAC Microtech (Changzhou) Co., Ltd. | 867 |
135 |
| Goertek Inc. | 2711 |
123 |
| AAC Technologies Pte. Ltd. | 1482 |
93 |
| Pioneer Corporation | 4099 |
85 |
| Tohoku Pioneer Corporation | 471 |
84 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1981 |
64 |
| Shenzhen Shokz Co., Ltd. | 1215 |
47 |
| Apple Inc. | 56673 |
40 |
| LG Display Co., Ltd. | 13877 |
39 |
| Panasonic Intellectual Property Management Co., Ltd. | 32709 |
30 |
| Bose Corporation | 3037 |
29 |
| Samsung Electronics Co., Ltd. | 150129 |
28 |
| Sonos, Inc. | 2724 |
27 |
| PSS Belgium N.V. | 123 |
23 |
| Sound Solutions International (Zhenjiang) Co., Ltd. | 36 |
21 |
| Foster Electric Company, Limited | 188 |
20 |
| Yamaha Corporation | 4069 |
18 |
| Google LLC | 43266 |
18 |
| Harman International Industries, Incorporated | 2728 |
18 |
| Panasonic Automotive Systems Co., Ltd. | 1995 |
18 |
| Other owners | 791 |