- 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: 90
10-year publication summary
|
10
|
3
|
6
|
13
|
9
|
8
|
8
|
13
|
6
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Agc, Inc. | 4449 |
15 |
| Infineon Technologies AG | 8141 |
8 |
| Apple Inc. | 52680 |
6 |
| Samsung Electronics Co., Ltd. | 138729 |
4 |
| AAC Acoustic Technologies (Shenzhen) Co., Ltd. | 1878 |
4 |
| LG Display Co., Ltd. | 12879 |
3 |
| Turtle Beach Corporation | 70 |
3 |
| Sonicedge Ltd. | 27 |
3 |
| Shenzhen Shokz Co., Ltd. | 926 |
3 |
| Knowles Electronics, LLC | 605 |
2 |
| Skyworks Solutions, Inc. | 3605 |
2 |
| Warwick Audio Technologies Limited | 8 |
2 |
| Recursion Pharmaceuticals, Inc. | 156 |
2 |
| Warwick Acoustics Limited | 14 |
2 |
| Sony Corporation | 31550 |
1 |
| Nokia Corporation | 6167 |
1 |
| Bayer MaterialScience AG | 840 |
1 |
| Hitachi, Ltd. | 15220 |
1 |
| Hitachi Medical Corporation | 655 |
1 |
| Kyocera Corporation | 13335 |
1 |
| Other owners | 25 |