- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 3/06 - Circuits for transducers for correcting frequency response of electrostatic transducers
Patent holdings for IPC class H04R 3/06
Total number of patents in this class: 174
10-year publication summary
|
27
|
25
|
20
|
13
|
7
|
13
|
4
|
8
|
5
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Knowles Electronics, LLC | 593 |
29 |
| Infineon Technologies AG | 8402 |
13 |
| Cirrus Logic, Inc. | 1804 |
13 |
| InvenSense, Inc. | 1207 |
12 |
| Cirrus Logic International Semiconductor Ltd. | 915 |
7 |
| Waves Audio Ltd. | 70 |
7 |
| Robert Bosch GmbH | 44176 |
5 |
| STMicroelectronics S.r.l. | 3374 |
4 |
| audio-technica Corporation | 371 |
4 |
| Qualcomm Incorporated | 92416 |
3 |
| Empire Technology Development LLC | 1614 |
3 |
| Shure Acquisition Holdings, Inc. | 568 |
3 |
| Samsung Electronics Co., Ltd. | 157946 |
2 |
| Analog Devices, Inc. | 3321 |
2 |
| Omron Corporation | 7370 |
2 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 2023 |
2 |
| Akustica, Inc. | 21 |
2 |
| Bose Corporation | 3092 |
2 |
| BSE Co., Ltd. | 88 |
2 |
| Freedman Electronics Pty. Ltd. | 133 |
2 |
| Other owners | 55 |