- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 1/22 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
Patent holdings for IPC class H04R 1/22
Total number of patents in this class: 720
10-year publication summary
|
47
|
58
|
82
|
77
|
68
|
85
|
78
|
77
|
80
|
20
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shenzhen Shokz Co., Ltd. | 1015 |
65 |
| Bose Corporation | 2949 |
22 |
| Harman International Industries, Incorporated | 2586 |
22 |
| Sonos, Inc. | 2528 |
22 |
| Samsung Electronics Co., Ltd. | 142124 |
19 |
| Goertek Inc. | 2620 |
19 |
| AAC Microtech (Changzhou) Co., Ltd. | 683 |
17 |
| Apple Inc. | 53955 |
13 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1903 |
13 |
| Yamaha Corporation | 4079 |
11 |
| Knowles Electronics, LLC | 602 |
11 |
| AAC Technologies Pte. Ltd. | 1451 |
9 |
| Panasonic Intellectual Property Management Co., Ltd. | 30506 |
8 |
| Cirrus Logic, Inc. | 1760 |
8 |
| Sony Corporation | 31261 |
7 |
| Nokia Corporation | 5935 |
7 |
| SSI New Material (Zhenjiang) Co., Ltd. | 51 |
7 |
| Huawei Technologies Co., Ltd. | 109214 |
6 |
| Nokia Technologies Oy | 17233 |
6 |
| Immerz, Inc. | 19 |
6 |
| Other owners | 422 |