- All sections
- H - Electricity
- H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducersdeaf-aid setspublic address systems
- H04R 1/44 - Special adaptations for subaqueous use, e.g. for hydrophone
Patent holdings for IPC class H04R 1/44
Total number of patents in this class: 405
10-year publication summary
|
36
|
44
|
29
|
38
|
55
|
32
|
40
|
36
|
24
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Shenzhen Shokz Co., Ltd. | 1302 |
64 |
| GoPro, Inc. | 2079 |
19 |
| Apple Inc. | 58074 |
18 |
| Samsung Electronics Co., Ltd. | 153845 |
17 |
| Amogreentech Co., Ltd. | 629 |
12 |
| Atlas Elektronik GmbH | 387 |
10 |
| Teledyne Instruments, Inc. | 228 |
9 |
| Finnovate Group LLC | 29 |
9 |
| Nitto Denko Corporation | 8465 |
8 |
| W. L. Gore & Associates, Inc. | 2695 |
7 |
| Goertek Inc. | 2773 |
7 |
| Raytheon Company | 8466 |
6 |
| ThyssenKrupp AG | 3458 |
6 |
| The United States of America as represented by the Secretary of the Navy | 2837 |
5 |
| Sooriakumar, Kathirgamasundaram | 12 |
5 |
| Gentex Corporation | 1946 |
4 |
| PGS Geophysical AS | 528 |
4 |
| Sony Corporation | 30397 |
3 |
| Lockheed Martin Corporation | 3279 |
3 |
| Casio Computer Co., Ltd. | 3486 |
3 |
| Other owners | 186 |