- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public 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: 669
10-year publication summary
|
35
|
47
|
58
|
82
|
77
|
68
|
84
|
76
|
74
|
36
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shenzhen Shokz Co., Ltd. | 629 |
48 |
| Bose Corporation | 2880 |
22 |
| Sonos, Inc. | 2274 |
20 |
| Harman International Industries, Incorporated | 2443 |
19 |
| Goertek Inc. | 2477 |
18 |
| Samsung Electronics Co., Ltd. | 131630 |
17 |
| AAC Microtech (Changzhou) Co., Ltd. | 458 |
15 |
| Apple Inc. | 50209 |
12 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1827 |
12 |
| Yamaha Corporation | 4054 |
11 |
| Knowles Electronics, LLC | 597 |
11 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
9 |
| AAC Technologies Pte. Ltd. | 1436 |
9 |
| Cirrus Logic, Inc. | 1719 |
8 |
| Sony Corporation | 32931 |
7 |
| Nokia Corporation | 6965 |
7 |
| SSI New Material (Zhenjiang) Co., Ltd. | 40 |
7 |
| Nokia Technologies Oy | 15057 |
6 |
| Immerz, Inc. | 18 |
6 |
| InvenSense, Inc. | 1014 |
6 |
| Other owners | 399 |