- 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: 10173
10-year publication summary
|
661
|
791
|
832
|
957
|
1098
|
1161
|
1168
|
1127
|
1053
|
221
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sony Corporation | 36721 |
301 |
| Samsung Electronics Co., Ltd. | 121140 |
291 |
| Cirrus Logic, Inc. | 1631 |
273 |
| Yamaha Corporation | 4011 |
265 |
| Bose Corporation | 2904 |
232 |
| Nokia Technologies Oy | 13534 |
210 |
| Apple Inc. | 45799 |
203 |
| Panasonic Intellectual Property Management Co., Ltd. | 26449 |
160 |
| Qualcomm Incorporated | 69014 |
157 |
| Sonos, Inc. | 1967 |
138 |
| Knowles Electronics, LLC | 710 |
125 |
| Amazon Technologies, Inc. | 23110 |
123 |
| Dolby Laboratories Licensing Corporation | 3636 |
111 |
| Harman International Industries, Incorporated | 2323 |
103 |
| Huawei Technologies Co., Ltd. | 89817 |
99 |
| Google LLC | 35465 |
93 |
| Microsoft Technology Licensing, LLC | 48048 |
91 |
| Sony Group Corporation | 7221 |
87 |
| NEC Corporation | 30449 |
85 |
| Nippon Telegraph and Telephone Corporation | 11140 |
85 |
| Other owners | 6941 |