- 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: 3707
10-year publication summary
|
327
|
353
|
379
|
363
|
363
|
346
|
367
|
366
|
293
|
117
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 155224 |
263 |
| Shenzhen Shokz Co., Ltd. | 1364 |
249 |
| Bose Corporation | 3088 |
232 |
| Apple Inc. | 58268 |
181 |
| Goertek Inc. | 2793 |
121 |
| AAC Technologies Pte. Ltd. | 1498 |
83 |
| LG Display Co., Ltd. | 14437 |
77 |
| AAC Microtech (Changzhou) Co., Ltd. | 961 |
76 |
| Harman International Industries, Incorporated | 2827 |
63 |
| Yamaha Corporation | 4066 |
60 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2013 |
47 |
| LG Electronics Inc. | 75274 |
35 |
| Google LLC | 44062 |
32 |
| SSI New Material (Zhenjiang) Co., Ltd. | 67 |
32 |
| Panasonic Intellectual Property Management Co., Ltd. | 33812 |
31 |
| Kyocera Corporation | 14278 |
30 |
| Nokia Technologies Oy | 20731 |
28 |
| Sonos, Inc. | 2812 |
28 |
| Sony Corporation | 30327 |
26 |
| PSS Belgium N.V. | 131 |
26 |
| Other owners | 1987 |