- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 21/02 - Microphones
Patent holdings for IPC class H04R 21/02
Total number of patents in this class: 92
10-year publication summary
|
6
|
6
|
2
|
4
|
5
|
2
|
3
|
0
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| InvenSense, Inc. | 1211 |
8 |
| Toshiba Corporation | 12660 |
3 |
| Hewlett-Packard Development Company, L.P. | 25148 |
3 |
| Cirrus Logic, Inc. | 1801 |
3 |
| Kabushiki Kaisha Audio-Technica | 120 |
3 |
| LG Electronics Inc. | 75973 |
2 |
| Robert Bosch GmbH | 44291 |
2 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48760 |
2 |
| STMicroelectronics S.r.l. | 3370 |
2 |
| JVC Kenwood Corporation | 3135 |
2 |
| Fortemedia, Inc. | 120 |
2 |
| Knowles Electronics, LLC | 593 |
2 |
| Shandong Gettop Acoustic Co., Ltd. | 21 |
2 |
| The University of Tokyo | 4386 |
2 |
| MMI Semiconductor Co., Ltd. | 73 |
2 |
| META Platforms Technologies, LLC | 6514 |
2 |
| Disney Enterprises, Inc. | 6202 |
1 |
| Sony Corporation | 30080 |
1 |
| International Business Machines Corporation | 62769 |
1 |
| Canon Inc. | 44222 |
1 |
| Other owners | 46 |