- 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: 673
10-year publication summary
|
75
|
58
|
51
|
43
|
75
|
55
|
28
|
27
|
10
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| AAC Technologies Pte. Ltd. | 1505 |
35 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2023 |
34 |
| Bose Corporation | 3095 |
29 |
| Harman International Industries, Incorporated | 2876 |
23 |
| Goertek Inc. | 2827 |
22 |
| Samsung Electronics Co., Ltd. | 158156 |
19 |
| Nokia Technologies Oy | 21366 |
14 |
| Sony Corporation | 30139 |
11 |
| Apple Inc. | 58936 |
8 |
| Suzhou Sonavox Electronics Co., Ltd. | 115 |
8 |
| SSI New Material (Zhenjiang) Co., Ltd. | 71 |
8 |
| Shenzhen Shokz Co., Ltd. | 1414 |
8 |
| Huawei Technologies Co., Ltd. | 123677 |
7 |
| Yamaha Corporation | 4076 |
7 |
| ZTE Corporation | 44219 |
7 |
| Boe Technology Group Co., Ltd. | 44158 |
7 |
| Panasonic Corporation | 18951 |
6 |
| Robert Bosch GmbH | 44209 |
6 |
| AAC Microtech (Changzhou) Co., Ltd. | 1033 |
6 |
| Vivo Mobile Communication Co., Ltd. | 13691 |
6 |
| Other owners | 402 |