- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic 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: 671
10-year publication summary
|
55
|
72
|
58
|
47
|
42
|
73
|
55
|
26
|
27
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AAC Technologies Pte. Ltd. | 1469 |
35 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1961 |
34 |
| Bose Corporation | 3014 |
29 |
| Harman International Industries, Incorporated | 2691 |
24 |
| Goertek Inc. | 2685 |
22 |
| Samsung Electronics Co., Ltd. | 148649 |
18 |
| Nokia Technologies Oy | 19015 |
14 |
| Sony Corporation | 30829 |
11 |
| Shenzhen Shokz Co., Ltd. | 1159 |
9 |
| Apple Inc. | 56070 |
8 |
| SSI New Material (Zhenjiang) Co., Ltd. | 51 |
8 |
| Huawei Technologies Co., Ltd. | 115187 |
7 |
| Yamaha Corporation | 4061 |
7 |
| ZTE Corporation | 42934 |
7 |
| Boe Technology Group Co., Ltd. | 41695 |
7 |
| Suzhou Sonavox Electronics Co., Ltd. | 106 |
7 |
| Panasonic Corporation | 19985 |
6 |
| Robert Bosch GmbH | 42984 |
6 |
| AAC Microtech (Changzhou) Co., Ltd. | 791 |
6 |
| Vivo Mobile Communication Co., Ltd. | 12702 |
6 |
| Other owners | 400 |