- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 19/04 - Microphones
Patent holdings for IPC class H04R 19/04
Total number of patents in this class: 2061
10-year publication summary
|
145
|
210
|
225
|
248
|
203
|
214
|
191
|
170
|
127
|
38
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Knowles Electronics, LLC | 597 |
203 |
| Infineon Technologies AG | 8189 |
126 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1827 |
117 |
| InvenSense, Inc. | 1014 |
81 |
| Cirrus Logic, Inc. | 1719 |
78 |
| BSE Co., Ltd. | 118 |
55 |
| Robert Bosch GmbH | 40953 |
51 |
| TDK Corporation | 6306 |
50 |
| STMicroelectronics S.r.l. | 3693 |
47 |
| Goertek Inc. | 2477 |
45 |
| Weifang Goertek Microelectronics Co., Ltd. | 153 |
44 |
| Omron Corporation | 6968 |
42 |
| MMI Semiconductor Co., Ltd. | 70 |
27 |
| Panasonic Corporation | 20786 |
26 |
| DB HiTek Co., Ltd. | 359 |
26 |
| Gmems Tech Shenzhen Limited | 35 |
25 |
| Cirrus Logic International Semiconductor Ltd. | 792 |
23 |
| Hyundai Motor Company | 19021 |
21 |
| Shure Acquisition Holdings, Inc. | 449 |
20 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
19 |
| Other owners | 935 |