- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
Patent holdings for IPC class H04R 1/28
Total number of patents in this class: 3526
10-year publication summary
|
241
|
326
|
352
|
375
|
360
|
358
|
344
|
357
|
352
|
226
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bose Corporation | 3002 |
231 |
| Shenzhen Shokz Co., Ltd. | 1143 |
230 |
| Samsung Electronics Co., Ltd. | 147787 |
228 |
| Apple Inc. | 55491 |
174 |
| Goertek Inc. | 2671 |
121 |
| AAC Technologies Pte. Ltd. | 1467 |
82 |
| LG Display Co., Ltd. | 13830 |
77 |
| AAC Microtech (Changzhou) Co., Ltd. | 777 |
67 |
| Yamaha Corporation | 4077 |
60 |
| Harman International Industries, Incorporated | 2674 |
60 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1953 |
46 |
| LG Electronics Inc. | 73588 |
41 |
| Sony Corporation | 30921 |
32 |
| Google LLC | 42628 |
31 |
| Kyocera Corporation | 13962 |
30 |
| Panasonic Intellectual Property Management Co., Ltd. | 32052 |
29 |
| Nokia Technologies Oy | 18321 |
28 |
| Sonos, Inc. | 2656 |
28 |
| SSI New Material (Zhenjiang) Co., Ltd. | 51 |
27 |
| Pioneer Corporation | 4266 |
25 |
| Other owners | 1879 |