- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; deaf-aid sets; public address systems
- H04R 7/08 - Plane diaphragms comprising a plurality of sections or layers comprising superposed layers separated by air or other fluid
Patent holdings for IPC class H04R 7/08
Total number of patents in this class: 85
10-year publication summary
|
7
|
10
|
3
|
6
|
13
|
9
|
8
|
8
|
13
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Agc, Inc. | 4029 |
15 |
| Apple Inc. | 50209 |
6 |
| Infineon Technologies AG | 8189 |
6 |
| Samsung Electronics Co., Ltd. | 131630 |
4 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1827 |
4 |
| Turtle Beach Corporation | 72 |
3 |
| Sonicedge Ltd. | 20 |
3 |
| LG Display Co., Ltd. | 11907 |
2 |
| Knowles Electronics, LLC | 597 |
2 |
| Skyworks Solutions, Inc. | 3450 |
2 |
| Warwick Audio Technologies Limited | 8 |
2 |
| Recursion Pharmaceuticals, Inc. | 147 |
2 |
| Warwick Acoustics Limited | 12 |
2 |
| Shenzhen Shokz Co., Ltd. | 629 |
2 |
| Sony Corporation | 32931 |
1 |
| Nokia Corporation | 6965 |
1 |
| Bayer MaterialScience AG | 874 |
1 |
| Hitachi, Ltd. | 16452 |
1 |
| Hitachi Medical Corporation | 713 |
1 |
| Kyocera Corporation | 12735 |
1 |
| Other owners | 24 |