- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 21/02 - Microphones
Patent holdings for IPC class H04R 21/02
Total number of patents in this class: 95
10-year publication summary
10
|
12
|
6
|
6
|
2
|
4
|
5
|
2
|
3
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
InvenSense, Inc. | 1014 |
5 |
Toshiba Corporation | 12017 |
3 |
Hewlett-Packard Development Company, L.P. | 28538 |
3 |
Robert Bosch GmbH | 40953 |
3 |
TDK Corporation | 6306 |
3 |
Cirrus Logic, Inc. | 1719 |
3 |
Kabushiki Kaisha Audio-Technica | 148 |
3 |
LG Electronics Inc. | 69257 |
2 |
Taiwan Semiconductor Manufacturing Company, Ltd. | 36809 |
2 |
STMicroelectronics S.r.l. | 3693 |
2 |
JVC Kenwood Corporation | 2774 |
2 |
Fortemedia, Inc. | 140 |
2 |
Knowles Electronics, LLC | 597 |
2 |
Shandong Gettop Acoustic Co., Ltd. | 24 |
2 |
The University of Tokyo | 3903 |
2 |
MMI Semiconductor Co., Ltd. | 70 |
2 |
META Platforms Technologies, LLC | 4806 |
2 |
Disney Enterprises, Inc. | 6012 |
1 |
Sony Corporation | 32931 |
1 |
International Business Machines Corporation | 60644 |
1 |
Other owners | 49 |