- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 23/00 - Transducers other than those covered by groups
Patent holdings for IPC class H04R 23/00
Total number of patents in this class: 615
10-year publication summary
|
76
|
59
|
59
|
43
|
50
|
34
|
57
|
44
|
45
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tsinghua University | 5890 |
27 |
| Hon Hai Precision Industry Co., Ltd. | 4039 |
25 |
| Infineon Technologies AG | 8213 |
24 |
| Earlens Corporation | 147 |
21 |
| Murata Manufacturing Co., Ltd. | 24465 |
17 |
| ams International AG | 429 |
14 |
| Apple Inc. | 54658 |
11 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1936 |
11 |
| NEC Corporation | 35521 |
10 |
| Panasonic Corporation | 20136 |
10 |
| Vocalzoom Systems Ltd. | 26 |
10 |
| Robert Bosch GmbH | 42632 |
9 |
| Cirrus Logic, Inc. | 1769 |
9 |
| uBeam Inc. | 44 |
9 |
| Sensibel AS | 16 |
9 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42461 |
8 |
| Panasonic Intellectual Property Management Co., Ltd. | 31221 |
8 |
| State Farm Mutual Automobile Insurance Company | 3094 |
8 |
| xMEMS Labs, Inc. | 111 |
8 |
| Samsung Electronics Co., Ltd. | 145416 |
7 |
| Other owners | 360 |