- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 3/00 - Circuits for transducers
Patent holdings for IPC class H04R 3/00
Total number of patents in this class: 10834
10-year publication summary
|
791
|
832
|
960
|
1098
|
1163
|
1173
|
1157
|
1102
|
917
|
237
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 131630 |
351 |
| Sony Corporation | 32931 |
289 |
| Cirrus Logic, Inc. | 1719 |
287 |
| Yamaha Corporation | 4054 |
276 |
| Bose Corporation | 2880 |
247 |
| Nokia Technologies Oy | 15057 |
222 |
| Apple Inc. | 50209 |
218 |
| Sonos, Inc. | 2274 |
171 |
| Qualcomm Incorporated | 76576 |
167 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
150 |
| Amazon Technologies, Inc. | 24422 |
135 |
| Microsoft Technology Licensing, LLC | 51439 |
133 |
| Dolby Laboratories Licensing Corporation | 3883 |
119 |
| Sony Group Corporation | 10730 |
115 |
| Huawei Technologies Co., Ltd. | 100781 |
112 |
| Harman International Industries, Incorporated | 2443 |
111 |
| Google LLC | 38759 |
109 |
| Knowles Electronics, LLC | 597 |
104 |
| Nippon Telegraph and Telephone Corporation | 14195 |
103 |
| NEC Corporation | 32703 |
88 |
| Other owners | 7327 |