- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 5/04 - Circuit arrangements
Patent holdings for IPC class H04R 5/04
Total number of patents in this class: 3435
10-year publication summary
|
239
|
241
|
379
|
457
|
381
|
410
|
354
|
261
|
232
|
118
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 158156 |
210 |
| Sonos, Inc. | 2871 |
204 |
| Apple Inc. | 58936 |
184 |
| Bose Corporation | 3095 |
125 |
| Dolby Laboratories Licensing Corporation | 4333 |
125 |
| Harman International Industries, Incorporated | 2876 |
82 |
| Nokia Technologies Oy | 21366 |
74 |
| Qualcomm Incorporated | 92563 |
65 |
| Yamaha Corporation | 4076 |
59 |
| META Platforms Technologies, LLC | 6482 |
57 |
| Sony Corporation | 30139 |
52 |
| Magic Leap, Inc. | 3400 |
48 |
| Voyetra Turtle Beach, Inc. | 525 |
47 |
| Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. | 5265 |
41 |
| Huawei Technologies Co., Ltd. | 123677 |
40 |
| Cirrus Logic, Inc. | 1805 |
40 |
| Google LLC | 44565 |
37 |
| Boomcloud 360 Inc. | 75 |
33 |
| Koss Corporation | 133 |
33 |
| Biamp Systems, LLC | 378 |
33 |
| Other owners | 1846 |