- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 1/20 - Arrangements for obtaining desired frequency or directional characteristics
Patent holdings for IPC class H04R 1/20
Total number of patents in this class: 676
10-year publication summary
|
57
|
75
|
58
|
51
|
43
|
75
|
55
|
25
|
27
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AAC Technologies Pte. Ltd. | 1439 |
35 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1873 |
34 |
| Bose Corporation | 2922 |
29 |
| Harman International Industries, Incorporated | 2537 |
25 |
| Goertek Inc. | 2587 |
22 |
| Samsung Electronics Co., Ltd. | 138320 |
18 |
| Nokia Technologies Oy | 16474 |
14 |
| Sony Corporation | 31580 |
11 |
| Apple Inc. | 52547 |
8 |
| SSI New Material (Zhenjiang) Co., Ltd. | 50 |
8 |
| Panasonic Corporation | 20339 |
7 |
| Huawei Technologies Co., Ltd. | 106382 |
7 |
| Yamaha Corporation | 4066 |
7 |
| ZTE Corporation | 41003 |
7 |
| Boe Technology Group Co., Ltd. | 38724 |
7 |
| Suzhou Sonavox Electronics Co., Ltd. | 92 |
7 |
| Shenzhen Shokz Co., Ltd. | 909 |
7 |
| Robert Bosch GmbH | 41695 |
6 |
| Vivo Mobile Communication Co., Ltd. | 11206 |
6 |
| AAC Microtech (Changzhou) Co., Ltd. | 630 |
5 |
| Other owners | 406 |