- 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: 3667
10-year publication summary
|
326
|
352
|
375
|
360
|
358
|
344
|
363
|
360
|
291
|
70
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 152534 |
258 |
| Shenzhen Shokz Co., Ltd. | 1267 |
241 |
| Bose Corporation | 3069 |
232 |
| Apple Inc. | 57505 |
181 |
| Goertek Inc. | 2735 |
121 |
| AAC Technologies Pte. Ltd. | 1493 |
83 |
| LG Display Co., Ltd. | 14188 |
78 |
| AAC Microtech (Changzhou) Co., Ltd. | 903 |
75 |
| Yamaha Corporation | 4068 |
60 |
| Harman International Industries, Incorporated | 2766 |
60 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1995 |
47 |
| LG Electronics Inc. | 74705 |
41 |
| Google LLC | 43583 |
32 |
| SSI New Material (Zhenjiang) Co., Ltd. | 62 |
32 |
| Panasonic Intellectual Property Management Co., Ltd. | 33202 |
31 |
| Kyocera Corporation | 14206 |
30 |
| Nokia Technologies Oy | 19911 |
28 |
| Sonos, Inc. | 2767 |
28 |
| Sony Corporation | 30518 |
26 |
| Pioneer Corporation | 3960 |
25 |
| Other owners | 1958 |