- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 3/00 - Circuits for transducers
Patent holdings for IPC class H04R 3/00
Total number of patents in this class: 11700
10-year publication summary
|
832
|
960
|
1098
|
1163
|
1174
|
1160
|
1128
|
966
|
773
|
441
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 146534 |
406 |
| Cirrus Logic, Inc. | 1776 |
294 |
| Yamaha Corporation | 4082 |
292 |
| Sony Corporation | 31028 |
280 |
| Bose Corporation | 2995 |
268 |
| Apple Inc. | 55017 |
247 |
| Nokia Technologies Oy | 17914 |
236 |
| Sonos, Inc. | 2621 |
200 |
| Qualcomm Incorporated | 85550 |
183 |
| Panasonic Intellectual Property Management Co., Ltd. | 31515 |
158 |
| Amazon Technologies, Inc. | 26741 |
154 |
| Sony Group Corporation | 13879 |
147 |
| Microsoft Technology Licensing, LLC | 53739 |
142 |
| Dolby Laboratories Licensing Corporation | 4126 |
139 |
| Huawei Technologies Co., Ltd. | 113006 |
127 |
| Nippon Telegraph and Telephone Corporation | 17349 |
126 |
| Google LLC | 42292 |
121 |
| Harman International Industries, Incorporated | 2652 |
117 |
| Knowles Electronics, LLC | 600 |
104 |
| Shenzhen Shokz Co., Ltd. | 1119 |
98 |
| Other owners | 7861 |